DataGridViewColumn Classe
Définition
Important
Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.
Représente une colonne dans un contrôle DataGridView.
public ref class DataGridViewColumn : System::Windows::Forms::DataGridViewBand, IDisposable, System::ComponentModel::IComponent
[System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.DataGridViewColumnConverter))]
public class DataGridViewColumn : System.Windows.Forms.DataGridViewBand, IDisposable, System.ComponentModel.IComponent
[<System.ComponentModel.TypeConverter(typeof(System.Windows.Forms.DataGridViewColumnConverter))>]
type DataGridViewColumn = class
inherit DataGridViewBand
interface IComponent
interface IDisposable
Public Class DataGridViewColumn
Inherits DataGridViewBand
Implements IComponent, IDisposable
- Héritage
- Dérivé
- Attributs
- Implémente
Exemples
L’exemple de code suivant crée un Windows Form avec un DataGridView et un ensemble de boutons. Chaque étiquette de bouton décrit une opération liée à une DataGridViewColumn propriété, telle que l’échange de la première et de la dernière colonne (à l’aide de la DisplayIndex propriété) ou la modification du texte d’un en-tête de colonne (à l’aide de la HeaderText propriété ). Cliquer sur un bouton modifie la propriété associée du DataGridViewColumn.
#using <System.Drawing.dll>
#using <System.dll>
#using <system.windows.forms.dll>
using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;
using namespace System::Collections;
public ref class DataGridViewColumnDemo: public Form
{
private:
#pragma region S "set up form"
public:
DataGridViewColumnDemo()
{
Button1 = gcnew Button;
Button2 = gcnew Button;
Button3 = gcnew Button;
Button4 = gcnew Button;
Button5 = gcnew Button;
Button6 = gcnew Button;
Button7 = gcnew Button;
Button8 = gcnew Button;
Button9 = gcnew Button;
Button10 = gcnew Button;
FlowLayoutPanel1 = gcnew FlowLayoutPanel;
thirdColumnHeader = L"Main Ingredients";
boringMeatloaf = L"ground beef";
boringMeatloafRanking = L"*";
toolStripItem1 = gcnew ToolStripMenuItem;
InitializeComponent();
AddButton( Button1, L"Reset", gcnew EventHandler( this, &DataGridViewColumnDemo::ResetToDisorder ) );
AddButton( Button2, L"Change Column 3 Header", gcnew EventHandler( this, &DataGridViewColumnDemo::ChangeColumn3Header ) );
AddButton( Button3, L"Change Meatloaf Recipe", gcnew EventHandler( this, &DataGridViewColumnDemo::ChangeMeatloafRecipe ) );
AddAdditionalButtons();
InitializeDataGridView();
}
DataGridView^ dataGridView;
Button^ Button1;
Button^ Button2;
Button^ Button3;
Button^ Button4;
Button^ Button5;
Button^ Button6;
Button^ Button7;
Button^ Button8;
Button^ Button9;
Button^ Button10;
FlowLayoutPanel^ FlowLayoutPanel1;
private:
void InitializeComponent()
{
FlowLayoutPanel1->Location = Point(454,0);
FlowLayoutPanel1->AutoSize = true;
FlowLayoutPanel1->FlowDirection = FlowDirection::TopDown;
AutoSize = true;
ClientSize = System::Drawing::Size( 614, 360 );
FlowLayoutPanel1->Name = L"flowlayoutpanel";
Controls->Add( this->FlowLayoutPanel1 );
Text = this->GetType()->Name;
}
#pragma endregion
#pragma region S " set up DataGridView "
String^ thirdColumnHeader;
String^ boringMeatloaf;
String^ boringMeatloafRanking;
bool boringRecipe;
bool shortMode;
void InitializeDataGridView()
{
dataGridView = gcnew System::Windows::Forms::DataGridView;
Controls->Add( dataGridView );
dataGridView->Size = System::Drawing::Size( 300, 200 );
// Create an unbound DataGridView by declaring a
// column count.
dataGridView->ColumnCount = 4;
AdjustDataGridViewSizing();
// Set the column header style.
DataGridViewCellStyle^ columnHeaderStyle = gcnew DataGridViewCellStyle;
columnHeaderStyle->BackColor = Color::Aqua;
columnHeaderStyle->Font = gcnew System::Drawing::Font( L"Verdana",10,FontStyle::Bold );
dataGridView->ColumnHeadersDefaultCellStyle = columnHeaderStyle;
// Set the column header names.
dataGridView->Columns[ 0 ]->Name = L"Recipe";
dataGridView->Columns[ 1 ]->Name = L"Category";
dataGridView->Columns[ 2 ]->Name = thirdColumnHeader;
dataGridView->Columns[ 3 ]->Name = L"Rating";
criteriaLabel = L"Column 3 sizing criteria: ";
PostColumnCreation();
// Populate the rows.
array<String^>^row1 = gcnew array<String^>{
L"Meatloaf",L"Main Dish",boringMeatloaf,boringMeatloafRanking
};
array<String^>^row2 = gcnew array<String^>{
L"Key Lime Pie",L"Dessert",L"lime juice, evaporated milk",L"****"
};
array<String^>^row3 = gcnew array<String^>{
L"Orange-Salsa Pork Chops",L"Main Dish",L"pork chops, salsa, orange juice",L"****"
};
array<String^>^row4 = gcnew array<String^>{
L"Black Bean and Rice Salad",L"Salad",L"black beans, brown rice",L"****"
};
array<String^>^row5 = gcnew array<String^>{
L"Chocolate Cheesecake",L"Dessert",L"cream cheese",L"***"
};
array<String^>^row6 = gcnew array<String^>{
L"Black Bean Dip",L"Appetizer",L"black beans, sour cream",L"***"
};
array<Object^>^rows = gcnew array<Object^>{
row1,row2,row3,row4,row5,row6
};
System::Collections::IEnumerator^ myEnum = rows->GetEnumerator();
while ( myEnum->MoveNext() )
{
array<String^>^rowArray = safe_cast<array<String^>^>(myEnum->Current);
dataGridView->Rows->Add( rowArray );
}
shortMode = false;
boringRecipe = true;
}
void AddButton( Button^ button, String^ buttonLabel, EventHandler^ handler )
{
FlowLayoutPanel1->Controls->Add( button );
button->TabIndex = FlowLayoutPanel1->Controls->Count;
button->Text = buttonLabel;
button->AutoSize = true;
button->Click += handler;
}
void ResetToDisorder( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Controls->Remove( dataGridView );
dataGridView->~DataGridView();
InitializeDataGridView();
}
void ChangeColumn3Header( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Toggle( &shortMode );
if ( shortMode )
{
dataGridView->Columns[ 2 ]->HeaderText = L"S";
}
else
{
dataGridView->Columns[ 2 ]->HeaderText = thirdColumnHeader;
}
}
void Toggle( interior_ptr<Boolean> toggleThis )
{
*toggleThis = ! *toggleThis;
}
void ChangeMeatloafRecipe( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Toggle( &boringRecipe );
if ( boringRecipe )
{
SetMeatloaf( boringMeatloaf, boringMeatloafRanking );
}
else
{
String^ greatMeatloafRecipe = L"1 lb. lean ground beef, "
L"1/2 cup bread crumbs, 1/4 cup ketchup,"
L"1/3 tsp onion powder, "
L"1 clove of garlic, 1/2 pack onion soup mix "
L" dash of your favorite BBQ Sauce";
SetMeatloaf( greatMeatloafRecipe, L"***" );
}
}
void SetMeatloaf( String^ recipe, String^ rating )
{
dataGridView->Rows[ 0 ]->Cells[ 2 ]->Value = recipe;
dataGridView->Rows[ 0 ]->Cells[ 3 ]->Value = rating;
}
#pragma endregion
public:
static void Main()
{
Application::Run( gcnew DataGridViewColumnDemo );
}
#pragma region S " demonstration code "
private:
void PostColumnCreation()
{
AddContextLabel();
AddCriteriaLabel();
CustomizeCellsInThirdColumn();
AddContextMenu();
SetDefaultCellInFirstColumn();
ToolTips();
dataGridView->CellMouseEnter += gcnew DataGridViewCellEventHandler( this, &DataGridViewColumnDemo::dataGridView_CellMouseEnter );
dataGridView->AutoSizeColumnModeChanged += gcnew DataGridViewAutoSizeColumnModeEventHandler( this, &DataGridViewColumnDemo::dataGridView_AutoSizeColumnModeChanged );
}
String^ criteriaLabel;
void AddCriteriaLabel()
{
AddLabelToPanelIfNotAlreadyThere( criteriaLabel, String::Concat( criteriaLabel, dataGridView->Columns[ 2 ]->AutoSizeMode, L"." ) );
}
void AddContextLabel()
{
String^ labelName = L"label";
AddLabelToPanelIfNotAlreadyThere( labelName, L"Use shortcut menu to change cell color." );
}
void AddLabelToPanelIfNotAlreadyThere( String^ labelName, String^ labelText )
{
Label^ label;
if ( FlowLayoutPanel1->Controls[ labelName ] == nullptr )
{
label = gcnew Label;
label->AutoSize = true;
label->Name = labelName;
label->BackColor = Color::Bisque;
FlowLayoutPanel1->Controls->Add( label );
}
else
{
label = dynamic_cast<Label^>(FlowLayoutPanel1->Controls[ labelName ]);
}
label->Text = labelText;
}
void CustomizeCellsInThirdColumn()
{
int thirdColumn = 2;
DataGridViewColumn^ column = dataGridView->Columns[ thirdColumn ];
DataGridViewCell^ cell = gcnew DataGridViewTextBoxCell;
cell->Style->BackColor = Color::Wheat;
column->CellTemplate = cell;
}
ToolStripMenuItem^ toolStripItem1;
void AddContextMenu()
{
toolStripItem1->Text = L"Redden";
toolStripItem1->Click += gcnew EventHandler( this, &DataGridViewColumnDemo::toolStripItem1_Click );
System::Windows::Forms::ContextMenuStrip^ strip = gcnew System::Windows::Forms::ContextMenuStrip;
IEnumerator^ myEnum = dataGridView->Columns->GetEnumerator();
while ( myEnum->MoveNext() )
{
DataGridViewColumn^ column = safe_cast<DataGridViewColumn^>(myEnum->Current);
column->ContextMenuStrip = strip;
column->ContextMenuStrip->Items->Add( toolStripItem1 );
}
}
DataGridViewCellEventArgs^ mouseLocation;
// Change the cell's color.
void toolStripItem1_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
dataGridView->Rows[ mouseLocation->RowIndex ]->Cells[ mouseLocation->ColumnIndex ]->Style->BackColor = Color::Red;
}
// Deal with hovering over a cell.
void dataGridView_CellMouseEnter( Object^ /*sender*/, DataGridViewCellEventArgs^ location )
{
mouseLocation = location;
}
void SetDefaultCellInFirstColumn()
{
DataGridViewColumn^ firstColumn = dataGridView->Columns[ 0 ];
DataGridViewCellStyle^ cellStyle = gcnew DataGridViewCellStyle;
cellStyle->BackColor = Color::Thistle;
firstColumn->DefaultCellStyle = cellStyle;
}
void ToolTips()
{
DataGridViewColumn^ firstColumn = dataGridView->Columns[ 0 ];
DataGridViewColumn^ thirdColumn = dataGridView->Columns[ 2 ];
firstColumn->ToolTipText = L"This column uses a default cell.";
thirdColumn->ToolTipText = L"This column uses a template cell."
L" Style changes to one cell apply to all cells.";
}
void AddAdditionalButtons()
{
AddButton( Button4, L"Set Minimum Width of Column Two", gcnew EventHandler( this, &DataGridViewColumnDemo::Button4_Click ) );
AddButton( Button5, L"Set Width of Column One", gcnew EventHandler( this, &DataGridViewColumnDemo::Button5_Click ) );
AddButton( Button6, L"Autosize Third Column", gcnew EventHandler( this, &DataGridViewColumnDemo::Button6_Click ) );
AddButton( Button7, L"Add Thick Vertical Edge", gcnew EventHandler( this, &DataGridViewColumnDemo::Button7_Click ) );
AddButton( Button8, L"Style and Number Columns", gcnew EventHandler( this, &DataGridViewColumnDemo::Button8_Click ) );
AddButton( Button9, L"Change Column Header Text", gcnew EventHandler( this, &DataGridViewColumnDemo::Button9_Click ) );
AddButton( Button10, L"Swap First and Last Columns", gcnew EventHandler( this, &DataGridViewColumnDemo::Button10_Click ) );
}
void AdjustDataGridViewSizing()
{
dataGridView->ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode::AutoSize;
}
//Set the minimum width.
void Button4_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
DataGridViewColumn^ column = dataGridView->Columns[ 1 ];
column->MinimumWidth = 40;
}
// Set the width.
void Button5_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
DataGridViewColumn^ column = dataGridView->Columns[ 0 ];
column->Width = 60;
}
// AutoSize the third column.
void Button6_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
DataGridViewColumn^ column = dataGridView->Columns[ 2 ];
column->AutoSizeMode = DataGridViewAutoSizeColumnMode::DisplayedCells;
}
// Set the vertical edge.
void Button7_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
int thirdColumn = 2;
// int edgeThickness = 5;
DataGridViewColumn^ column = dataGridView->Columns[ thirdColumn ];
column->DividerWidth = 10;
}
// Style and number columns.
void Button8_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
DataGridViewCellStyle^ style = gcnew DataGridViewCellStyle;
style->Alignment = DataGridViewContentAlignment::MiddleCenter;
style->ForeColor = Color::IndianRed;
style->BackColor = Color::Ivory;
IEnumerator^ myEnum1 = dataGridView->Columns->GetEnumerator();
while ( myEnum1->MoveNext() )
{
DataGridViewColumn^ column = safe_cast<DataGridViewColumn^>(myEnum1->Current);
column->HeaderCell->Value = column->Index.ToString();
column->HeaderCell->Style = style;
}
}
// Change the text in the column header.
void Button9_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
IEnumerator^ myEnum2 = dataGridView->Columns->GetEnumerator();
while ( myEnum2->MoveNext() )
{
DataGridViewColumn^ column = safe_cast<DataGridViewColumn^>(myEnum2->Current);
column->HeaderText = String::Concat( L"Column ", column->Index.ToString() );
}
}
// Swap the last column with the first.
void Button10_Click( Object^ /*sender*/, EventArgs^ /*args*/ )
{
DataGridViewColumnCollection^ columnCollection = dataGridView->Columns;
DataGridViewColumn^ firstDisplayedColumn = columnCollection->GetFirstColumn( DataGridViewElementStates::Visible );
DataGridViewColumn^ lastDisplayedColumn = columnCollection->GetLastColumn( DataGridViewElementStates::Visible, DataGridViewElementStates::None );
int firstColumn_sIndex = firstDisplayedColumn->DisplayIndex;
firstDisplayedColumn->DisplayIndex = lastDisplayedColumn->DisplayIndex;
lastDisplayedColumn->DisplayIndex = firstColumn_sIndex;
}
// Updated the criteria label.
void dataGridView_AutoSizeColumnModeChanged( Object^ /*sender*/, DataGridViewAutoSizeColumnModeEventArgs^ args )
{
args->Column->DataGridView->Parent->Controls[ L"flowlayoutpanel" ]->Controls[ criteriaLabel ]->Text = String::Concat( criteriaLabel, args->Column->AutoSizeMode );
}
#pragma endregion
};
int main()
{
DataGridViewColumnDemo::Main();
}
using System.Windows.Forms;
using System;
using System.Drawing;
public class DataGridViewColumnDemo : Form
{
#region "set up form"
public DataGridViewColumnDemo()
{
InitializeComponent();
AddButton(Button1, "Reset",
new EventHandler(ResetToDisorder));
AddButton(Button2, "Change Column 3 Header",
new EventHandler(ChangeColumn3Header));
AddButton(Button3, "Change Meatloaf Recipe",
new EventHandler(ChangeMeatloafRecipe));
AddAdditionalButtons();
InitializeDataGridView();
}
DataGridView dataGridView;
Button Button1 = new Button();
Button Button2 = new Button();
Button Button3 = new Button();
Button Button4 = new Button();
Button Button5 = new Button();
Button Button6 = new Button();
Button Button7 = new Button();
Button Button8 = new Button();
Button Button9 = new Button();
Button Button10 = new Button();
FlowLayoutPanel FlowLayoutPanel1 = new FlowLayoutPanel();
private void InitializeComponent()
{
FlowLayoutPanel1.Location = new Point(454, 0);
FlowLayoutPanel1.AutoSize = true;
FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
FlowLayoutPanel1.Name = "flowlayoutpanel";
ClientSize = new System.Drawing.Size(614, 360);
Controls.Add(this.FlowLayoutPanel1);
Text = this.GetType().Name;
AutoSize = true;
}
#endregion
#region "set up DataGridView"
private string thirdColumnHeader = "Main Ingredients";
private string boringMeatloaf = "ground beef";
private string boringMeatloafRanking = "*";
private bool boringRecipe;
private bool shortMode;
private void InitializeDataGridView()
{
dataGridView = new System.Windows.Forms.DataGridView();
Controls.Add(dataGridView);
dataGridView.Size = new Size(300, 200);
// Create an unbound DataGridView by declaring a
// column count.
dataGridView.ColumnCount = 4;
AdjustDataGridViewSizing();
// Set the column header style.
DataGridViewCellStyle columnHeaderStyle =
new DataGridViewCellStyle();
columnHeaderStyle.BackColor = Color.Aqua;
columnHeaderStyle.Font =
new Font("Verdana", 10, FontStyle.Bold);
dataGridView.ColumnHeadersDefaultCellStyle =
columnHeaderStyle;
// Set the column header names.
dataGridView.Columns[0].Name = "Recipe";
dataGridView.Columns[1].Name = "Category";
dataGridView.Columns[2].Name = thirdColumnHeader;
dataGridView.Columns[3].Name = "Rating";
PostColumnCreation();
// Populate the rows.
string[] row1 = new string[]{"Meatloaf",
"Main Dish", boringMeatloaf, boringMeatloafRanking};
string[] row2 = new string[]{"Key Lime Pie",
"Dessert", "lime juice, evaporated milk", "****"};
string[] row3 = new string[]{"Orange-Salsa Pork Chops",
"Main Dish", "pork chops, salsa, orange juice", "****"};
string[] row4 = new string[]{"Black Bean and Rice Salad",
"Salad", "black beans, brown rice", "****"};
string[] row5 = new string[]{"Chocolate Cheesecake",
"Dessert", "cream cheese", "***"};
string[] row6 = new string[]{"Black Bean Dip", "Appetizer",
"black beans, sour cream", "***"};
object[] rows = new object[] { row1, row2, row3, row4, row5, row6 };
foreach (string[] rowArray in rows)
{
dataGridView.Rows.Add(rowArray);
}
shortMode = false;
boringRecipe = true;
}
private void AddButton(Button button, string buttonLabel,
EventHandler handler)
{
FlowLayoutPanel1.Controls.Add(button);
button.TabIndex = FlowLayoutPanel1.Controls.Count;
button.Text = buttonLabel;
button.AutoSize = true;
button.Click += handler;
}
private void ResetToDisorder(object sender, System.EventArgs e)
{
Controls.Remove(dataGridView);
dataGridView.Dispose();
InitializeDataGridView();
}
private void ChangeColumn3Header(object sender,
System.EventArgs e)
{
Toggle(ref shortMode);
if (shortMode)
{ dataGridView.Columns[2].HeaderText = "S"; }
else
{ dataGridView.Columns[2].HeaderText = thirdColumnHeader; }
}
private static void Toggle(ref bool toggleThis)
{
toggleThis = !toggleThis;
}
private void ChangeMeatloafRecipe(object sender,
System.EventArgs e)
{
Toggle(ref boringRecipe);
if (boringRecipe)
{
SetMeatloaf(boringMeatloaf, boringMeatloafRanking);
}
else
{
string greatMeatloafRecipe =
"1 lb. lean ground beef, " +
"1/2 cup bread crumbs, 1/4 cup ketchup," +
"1/3 tsp onion powder, " +
"1 clove of garlic, 1/2 pack onion soup mix " +
" dash of your favorite BBQ Sauce";
SetMeatloaf(greatMeatloafRecipe, "***");
}
}
private void SetMeatloaf(string recipe, string rating)
{
dataGridView.Rows[0].Cells[2].Value = recipe;
dataGridView.Rows[0].Cells[3].Value = rating;
}
#endregion
#region "demonstration code"
private void PostColumnCreation()
{
AddContextLabel();
AddCriteriaLabel();
CustomizeCellsInThirdColumn();
AddContextMenu();
SetDefaultCellInFirstColumn();
ToolTips();
dataGridView.CellMouseEnter +=
dataGridView_CellMouseEnter;
dataGridView.AutoSizeColumnModeChanged +=
dataGridView_AutoSizeColumnModeChanged;
}
private string criteriaLabel = "Column 3 sizing criteria: ";
private void AddCriteriaLabel()
{
AddLabelToPanelIfNotAlreadyThere(criteriaLabel,
criteriaLabel +
dataGridView.Columns[2].AutoSizeMode.ToString() +
".");
}
private void AddContextLabel()
{
string labelName = "label";
AddLabelToPanelIfNotAlreadyThere(labelName,
"Use shortcut menu to change cell color.");
}
private void AddLabelToPanelIfNotAlreadyThere(
string labelName, string labelText)
{
Label label;
if (FlowLayoutPanel1.Controls[labelName] == null)
{
label = new Label();
label.AutoSize = true;
label.Name = labelName;
label.BackColor = Color.Bisque;
FlowLayoutPanel1.Controls.Add(label);
}
else
{
label = (Label)FlowLayoutPanel1.Controls[labelName];
}
label.Text = labelText;
}
private void CustomizeCellsInThirdColumn()
{
int thirdColumn = 2;
DataGridViewColumn column =
dataGridView.Columns[thirdColumn];
DataGridViewCell cell = new DataGridViewTextBoxCell();
cell.Style.BackColor = Color.Wheat;
column.CellTemplate = cell;
}
ToolStripMenuItem toolStripItem1 = new ToolStripMenuItem();
private void AddContextMenu()
{
toolStripItem1.Text = "Redden";
toolStripItem1.Click += new EventHandler(toolStripItem1_Click);
ContextMenuStrip strip = new ContextMenuStrip();
foreach (DataGridViewColumn column in dataGridView.Columns)
{
column.ContextMenuStrip = strip;
column.ContextMenuStrip.Items.Add(toolStripItem1);
}
}
private DataGridViewCellEventArgs mouseLocation;
// Change the cell's color.
private void toolStripItem1_Click(object sender, EventArgs args)
{
dataGridView.Rows[mouseLocation.RowIndex]
.Cells[mouseLocation.ColumnIndex].Style.BackColor
= Color.Red;
}
// Deal with hovering over a cell.
private void dataGridView_CellMouseEnter(object sender,
DataGridViewCellEventArgs location)
{
mouseLocation = location;
}
private void SetDefaultCellInFirstColumn()
{
DataGridViewColumn firstColumn = dataGridView.Columns[0];
DataGridViewCellStyle cellStyle =
new DataGridViewCellStyle();
cellStyle.BackColor = Color.Thistle;
firstColumn.DefaultCellStyle = cellStyle;
}
private void ToolTips()
{
DataGridViewColumn firstColumn = dataGridView.Columns[0];
DataGridViewColumn thirdColumn = dataGridView.Columns[2];
firstColumn.ToolTipText =
"This column uses a default cell.";
thirdColumn.ToolTipText =
"This column uses a template cell." +
" Style changes to one cell apply to all cells.";
}
private void AddAdditionalButtons()
{
AddButton(Button4, "Set Minimum Width of Column Two",
new EventHandler(Button4_Click));
AddButton(Button5, "Set Width of Column One",
new EventHandler(Button5_Click));
AddButton(Button6, "Autosize Third Column",
new EventHandler(Button6_Click));
AddButton(Button7, "Add Thick Vertical Edge",
new EventHandler(Button7_Click));
AddButton(Button8, "Style and Number Columns",
new EventHandler(Button8_Click));
AddButton(Button9, "Change Column Header Text",
new EventHandler(Button9_Click));
AddButton(Button10, "Swap First and Last Columns",
new EventHandler(Button10_Click));
}
private void AdjustDataGridViewSizing()
{
dataGridView.ColumnHeadersHeightSizeMode =
DataGridViewColumnHeadersHeightSizeMode.AutoSize;
}
//Set the minimum width.
private void Button4_Click(object sender,
System.EventArgs e)
{
DataGridViewColumn column = dataGridView.Columns[1];
column.MinimumWidth = 40;
}
// Set the width.
private void Button5_Click(object sender, System.EventArgs e)
{
DataGridViewColumn column = dataGridView.Columns[0];
column.Width = 60;
}
// AutoSize the third column.
private void Button6_Click(object sender,
System.EventArgs e)
{
DataGridViewColumn column = dataGridView.Columns[2];
column.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells;
}
// Set the vertical edge.
private void Button7_Click(object sender,
System.EventArgs e)
{
int thirdColumn = 2;
DataGridViewColumn column =
dataGridView.Columns[thirdColumn];
column.DividerWidth = 10;
}
// Style and number columns.
private void Button8_Click(object sender,
EventArgs args)
{
DataGridViewCellStyle style = new DataGridViewCellStyle();
style.Alignment =
DataGridViewContentAlignment.MiddleCenter;
style.ForeColor = Color.IndianRed;
style.BackColor = Color.Ivory;
foreach (DataGridViewColumn column in dataGridView.Columns)
{
column.HeaderCell.Value = column.Index.ToString();
column.HeaderCell.Style = style;
}
}
// Change the text in the column header.
private void Button9_Click(object sender,
EventArgs args)
{
foreach (DataGridViewColumn column in dataGridView.Columns)
{
column.HeaderText = String.Concat("Column ",
column.Index.ToString());
}
}
// Swap the last column with the first.
private void Button10_Click(object sender, EventArgs args)
{
DataGridViewColumnCollection columnCollection = dataGridView.Columns;
DataGridViewColumn firstVisibleColumn =
columnCollection.GetFirstColumn(DataGridViewElementStates.Visible);
DataGridViewColumn lastVisibleColumn =
columnCollection.GetLastColumn(
DataGridViewElementStates.Visible, DataGridViewElementStates.None);
int firstColumn_sIndex = firstVisibleColumn.DisplayIndex;
firstVisibleColumn.DisplayIndex = lastVisibleColumn.DisplayIndex;
lastVisibleColumn.DisplayIndex = firstColumn_sIndex;
}
// Updated the criteria label.
private void dataGridView_AutoSizeColumnModeChanged(object sender,
DataGridViewAutoSizeColumnModeEventArgs args)
{
args.Column.DataGridView.Parent.
Controls["flowlayoutpanel"].Controls[criteriaLabel].
Text = criteriaLabel
+ args.Column.AutoSizeMode.ToString();
}
#endregion
[STAThreadAttribute()]
public static void Main()
{
Application.Run(new DataGridViewColumnDemo());
}
}
Imports System.Windows.Forms
Imports System.Drawing
Public Class DataGridViewColumnDemo
Inherits Form
#Region "set up form"
Public Sub New()
InitializeComponent()
AddButton(Button1, "Reset")
AddButton(Button2, "Change Column 3 Header")
AddButton(Button3, "Change Meatloaf Recipe")
AddAdditionalButtons()
End Sub
Friend WithEvents dataGridView As DataGridView
Friend WithEvents Button1 As Button = New Button()
Friend WithEvents Button2 As Button = New Button()
Friend WithEvents Button3 As Button = New Button()
Friend WithEvents Button4 As Button = New Button()
Friend WithEvents Button5 As Button = New Button()
Friend WithEvents Button6 As Button = New Button()
Friend WithEvents Button7 As Button = New Button()
Friend WithEvents Button8 As Button = New Button()
Friend WithEvents Button9 As Button = New Button()
Friend WithEvents Button10 As Button = New Button()
Friend WithEvents FlowLayoutPanel1 As FlowLayoutPanel _
= New FlowLayoutPanel()
Private Sub InitializeComponent()
FlowLayoutPanel1.Location = New Point(454, 0)
FlowLayoutPanel1.AutoSize = True
FlowLayoutPanel1.FlowDirection = FlowDirection.TopDown
FlowLayoutPanel1.Name = "flowlayoutpanel"
ClientSize = New System.Drawing.Size(614, 360)
Controls.Add(FlowLayoutPanel1)
Text = Me.GetType.Name
AutoSize = True
End Sub
#End Region
#Region "set up DataGridView"
Private thirdColumnHeader As String = "Main Ingredients"
Private boringMeatloaf As String = "ground beef"
Private boringMeatloafRanking As String = "*"
Private boringRecipe As Boolean
Private shortMode As Boolean
Private Sub InitializeDataGridView(ByVal ignored As Object, _
ByVal ignoredToo As EventArgs) Handles Me.Load
dataGridView = New System.Windows.Forms.DataGridView
Controls.Add(dataGridView)
dataGridView.Size = New Size(300, 200)
' Create an unbound DataGridView by declaring a
' column count.
dataGridView.ColumnCount = 4
AdjustDataGridViewSizing()
' Set the column header style.
Dim columnHeaderStyle As New DataGridViewCellStyle
columnHeaderStyle.BackColor = Color.Aqua
columnHeaderStyle.Font = _
New Font("Verdana", 10, FontStyle.Bold)
dataGridView.ColumnHeadersDefaultCellStyle = _
columnHeaderStyle
' Set the column header names.
dataGridView.Columns(0).Name = "Recipe"
dataGridView.Columns(1).Name = "Category"
dataGridView.Columns(2).Name = thirdColumnHeader
dataGridView.Columns(3).Name = "Rating"
PostColumnCreation()
' Populate the rows.
Dim row1 As String() = New String() _
{"Meatloaf", "Main Dish", boringMeatloaf, _
boringMeatloafRanking}
Dim row2 As String() = New String() _
{"Key Lime Pie", "Dessert", _
"lime juice, evaporated milk", _
"****"}
Dim row3 As String() = New String() _
{"Orange-Salsa Pork Chops", "Main Dish", _
"pork chops, salsa, orange juice", "****"}
Dim row4 As String() = New String() _
{"Black Bean and Rice Salad", "Salad", _
"black beans, brown rice", _
"****"}
Dim row5 As String() = New String() _
{"Chocolate Cheesecake", "Dessert", "cream cheese", _
"***"}
Dim row6 As String() = New String() _
{"Black Bean Dip", "Appetizer", _
"black beans, sour cream", _
"***"}
Dim rows As Object() = New Object() {row1, row2, _
row3, row4, row5, row6}
Dim rowArray As String()
For Each rowArray In rows
dataGridView.Rows.Add(rowArray)
Next
shortMode = False
boringRecipe = True
End Sub
Private Sub AddButton(ByVal button As Button, _
ByVal buttonLabel As String)
FlowLayoutPanel1.Controls.Add(button)
button.TabIndex = FlowLayoutPanel1.Controls.Count
button.Text = buttonLabel
button.AutoSize = True
End Sub
Private Sub ResetToDisorder(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles Button1.Click
Controls.Remove(dataGridview)
dataGridView.Dispose()
InitializeDataGridView(Nothing, Nothing)
End Sub
Private Sub ChangeColumn3Header(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles Button2.Click
Toggle(shortMode)
If shortMode Then dataGridView.Columns(2).HeaderText = _
"S" _
Else dataGridView.Columns(2).HeaderText = _
thirdColumnHeader
End Sub
Private Shared Sub Toggle(ByRef toggleThis As Boolean)
toggleThis = Not toggleThis
End Sub
Private Sub ChangeMeatloafRecipe(ByVal sender As Object, _
ByVal e As System.EventArgs) _
Handles Button3.Click
Toggle(boringRecipe)
If boringRecipe Then
SetMeatloaf(boringMeatloaf, boringMeatloafRanking)
Else
Dim greatMeatloafRecipe As String = "1 lb. lean ground beef, " _
& "1/2 cup bread crumbs, 1/4 cup ketchup," _
& "1/3 tsp onion powder, " _
& "1 clove of garlic, 1/2 pack onion soup mix " _
& " dash of your favorite BBQ Sauce"
SetMeatloaf(greatMeatloafRecipe, "***")
End If
End Sub
Private Sub SetMeatloaf(ByVal recipe As String, _
ByVal rating As String)
dataGridView.Rows(0).Cells(2).Value = recipe
dataGridView.Rows(0).Cells(3).Value = rating
End Sub
#End Region
#Region "demonstration code"
Private Sub PostColumnCreation()
AddContextLabel()
AddCriteriaLabel()
CustomizeCellsInThirdColumn()
AddContextMenu()
SetDefaultCellInFirstColumn()
ToolTips()
End Sub
Private criteriaLabel As String = "Column 3 sizing criteria: "
Private Sub AddCriteriaLabel()
AddLabelToPanelIfNotAlreadyThere(criteriaLabel, _
criteriaLabel & _
dataGridView.Columns(2).AutoSizeMode.ToString() _
& ".")
End Sub
Private Sub AddContextLabel()
Dim labelName As String = "label"
AddLabelToPanelIfNotAlreadyThere(labelName, _
"Use shortcut menu to change cell color.")
End Sub
Private Sub AddLabelToPanelIfNotAlreadyThere( _
ByVal labelName As String, _
ByVal labelText As String)
Dim label As Label
If FlowLayoutPanel1.Controls(labelName) Is Nothing Then
label = New Label()
label.AutoSize = True
label.Name = labelName
label.BackColor = Color.Bisque
FlowLayoutPanel1.Controls.Add(label)
Else
label = CType(FlowLayoutPanel1.Controls(labelName), Label)
End If
label.Text = labelText
End Sub
Private Sub CustomizeCellsInThirdColumn()
Dim thirdColumn As Integer = 2
Dim column As DataGridViewColumn = _
dataGridView.Columns(thirdColumn)
Dim cell As DataGridViewCell = _
New DataGridViewTextBoxCell()
cell.Style.BackColor = Color.Wheat
column.CellTemplate = cell
End Sub
WithEvents toolStripItem1 As New ToolStripMenuItem()
Private Sub AddContextMenu()
toolStripItem1.Text = "Redden"
Dim strip As New ContextMenuStrip()
For Each column As DataGridViewColumn _
In dataGridView.Columns()
column.ContextMenuStrip = strip
column.ContextMenuStrip.Items.Add(toolStripItem1)
Next
End Sub
' Change the cell's color.
Private Sub toolStripItem1_Click(ByVal sender As Object, _
ByVal args As EventArgs) _
Handles toolStripItem1.Click
dataGridView.Rows(mouseLocation.RowIndex) _
.Cells(mouseLocation.ColumnIndex) _
.Style.BackColor = Color.Red
End Sub
Private mouseLocation As DataGridViewCellEventArgs
' Deal with hovering over a cell.
Private Sub dataGridView_CellMouseEnter(ByVal sender As Object, _
ByVal location As DataGridViewCellEventArgs) _
Handles DataGridView.CellMouseEnter
mouseLocation = location
End Sub
Private Sub SetDefaultCellInFirstColumn()
Dim firstColumn As DataGridViewColumn = _
dataGridView.Columns(0)
Dim cellStyle As DataGridViewCellStyle = _
New DataGridViewCellStyle()
cellStyle.BackColor = Color.Thistle
firstColumn.DefaultCellStyle = cellStyle
End Sub
Private Sub ToolTips()
Dim firstColumn As DataGridViewColumn = _
dataGridView.Columns(0)
Dim thirdColumn As DataGridViewColumn = _
dataGridView.Columns(2)
firstColumn.ToolTipText = _
"This is column uses a default cell."
thirdColumn.ToolTipText = _
"This is column uses a template cell." _
& " Changes to one cell's style changes them all."
End Sub
Private Sub AddAdditionalButtons()
AddButton(Button4, "Set Minimum Width of Column Two")
AddButton(Button5, "Set Width of Column One")
AddButton(Button6, "Autosize Third Column")
AddButton(Button7, "Add Thick Vertical Edge")
AddButton(Button8, "Style and Number Columns")
AddButton(Button9, "Change Column Header Text")
AddButton(Button10, "Swap First and Last Columns")
End Sub
Private Sub AdjustDataGridViewSizing()
dataGridView.ColumnHeadersHeightSizeMode = _
DataGridViewColumnHeadersHeightSizeMode.AutoSize
End Sub
'Set the minimum width.
Private Sub Button4_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Button4.Click
Dim column As DataGridViewColumn = dataGridView.Columns(1)
column.MinimumWidth = 40
End Sub
' Set the width.
Private Sub Button5_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Button5.Click
Dim column As DataGridViewColumn = dataGridView.Columns(0)
column.Width = 60
End Sub
' AutoSize the third column.
Private Sub Button6_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Button6.Click
Dim column As DataGridViewColumn = dataGridView.Columns(2)
column.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells
End Sub
' Set the vertical edge.
Private Sub Button7_Click(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles Button7.Click
Dim thirdColumn As Integer = 2
Dim column As DataGridViewColumn = _
dataGridView.Columns(thirdColumn)
column.DividerWidth = 10
End Sub
' Style and number columns.
Private Sub Button8_Click(ByVal sender As Object, _
ByVal args As EventArgs) Handles Button8.Click
Dim style As DataGridViewCellStyle = _
New DataGridViewCellStyle()
style.Alignment = _
DataGridViewContentAlignment.MiddleCenter
style.ForeColor = Color.IndianRed
style.BackColor = Color.Ivory
For Each column As DataGridViewColumn _
In dataGridView.Columns
column.HeaderCell.Value = _
column.Index.ToString
column.HeaderCell.Style = style
Next
End Sub
' Change the text in the column header.
Private Sub Button9_Click(ByVal sender As Object, _
ByVal args As EventArgs) Handles Button9.Click
For Each column As DataGridViewColumn _
In dataGridView.Columns
column.HeaderText = String.Concat("Column ", _
column.Index.ToString)
Next
End Sub
' Swap the last column with the first.
Private Sub Button10_Click(ByVal sender As Object, _
ByVal args As EventArgs) Handles Button10.Click
Dim columnCollection As DataGridViewColumnCollection = _
dataGridView.Columns
Dim firstVisibleColumn As DataGridViewColumn = _
columnCollection.GetFirstColumn(DataGridViewElementStates.Visible)
Dim lastVisibleColumn As DataGridViewColumn = _
columnCollection.GetLastColumn(DataGridViewElementStates.Visible, _
Nothing)
Dim firstColumn_sIndex As Integer = firstVisibleColumn.DisplayIndex
firstVisibleColumn.DisplayIndex = _
lastVisibleColumn.DisplayIndex
lastVisibleColumn.DisplayIndex = firstColumn_sIndex
End Sub
' Updated the criteria label.
Private Sub dataGridView_AutoSizeColumnCriteriaChanged( _
ByVal sender As Object, _
ByVal args As DataGridViewAutoSizeColumnModeEventArgs) _
Handles DataGridView.AutoSizeColumnModeChanged
args.Column.DataGridView.Parent. _
Controls("flowlayoutpanel"). _
Controls(criteriaLabel).Text = _
criteriaLabel & args.Column.AutoSizeMode.ToString
End Sub
#End Region
<STAThreadAttribute()> _
Public Shared Sub Main()
Application.Run(New DataGridViewColumnDemo())
End Sub
End Class
Remarques
La DataGridViewColumn classe représente une colonne logique dans un DataGridView contrôle. Vous pouvez récupérer des colonnes via la Columns collection du contrôle .
Contrairement à un DataGridViewRow, qui contient la collection réelle de cellules d’un DataGridView, DataGridViewColumn est principalement utilisé pour ajuster l’apparence et le comportement de l’interface utilisateur de colonne, comme la largeur de colonne et le style de cellule. Pour plus d’informations sur les styles de cellule, consultez Styles de cellule dans le contrôle DataGridView Windows Forms.
Les types qui dérivent généralement d’initialiser DataGridViewColumn la CellTemplate propriété vers une nouvelle instance d’un type associé dérivé de la DataGridViewCell classe . Toutes les propriétés de colonne qui se rapportent à l’apparence ou au comportement de cellules individuelles sont des wrappers pour les propriétés correspondantes de la cellule de modèle. La modification de l’une de ces propriétés sur la colonne modifie automatiquement la valeur sur le modèle de cellule et sur toutes les cellules de la colonne. Pour remplacer la valeur spécifiée pour les cellules individuelles, définissez les valeurs de cellule après avoir défini la valeur de colonne.
Notes pour les héritiers
Lorsque vous dérivez de DataGridViewColumn et ajoutez de nouvelles propriétés à la classe dérivée, veillez à remplacer la Clone() méthode pour copier les nouvelles propriétés pendant les opérations de clonage. Vous devez également appeler la méthode de la classe de Clone() base afin que les propriétés de la classe de base soient copiées dans la nouvelle cellule.
Constructeurs
DataGridViewColumn() |
Initialise une nouvelle instance de la classe DataGridViewColumn à son état par défaut. |
DataGridViewColumn(DataGridViewCell) |
Initialise une nouvelle instance de la classe DataGridViewColumn en utilisant un DataGridViewCell existant comme modèle. |
Propriétés
AutoSizeMode |
Obtient ou définit le mode qui permet à la colonne de modifier automatiquement sa largeur. |
CellTemplate |
Obtient ou définit le modèle utilisé pour créer des cellules. |
CellType |
Obtient le type d'exécution du modèle de cellule. |
ContextMenuStrip |
Obtient ou définit le menu contextuel pour la colonne. |
DataGridView |
Obtient le contrôle DataGridView associé à cet élément. (Hérité de DataGridViewElement) |
DataPropertyName |
Obtient ou définit le nom de la propriété de source de données ou de la colonne de base de données à laquelle DataGridViewColumn est lié. |
DefaultCellStyle |
Obtient ou définit le style de cellule par défaut de la colonne. |
DefaultHeaderCellType |
Obtient ou définit le type à l'exécution de la cellule d'en-tête par défaut. (Hérité de DataGridViewBand) |
Displayed |
Obtient une valeur indiquant si la bande est actuellement affichée à l'écran. (Hérité de DataGridViewBand) |
DisplayIndex |
Obtient ou définit l'ordre d'affichage de la colonne par rapport aux colonnes actuellement affichées. |
DividerWidth |
Obtient ou définit la largeur, en pixels, du séparateur de colonne. |
FillWeight |
Obtient ou définit une valeur qui représente la largeur de la colonne en mode de remplissage par rapport aux largeurs des autres colonnes en mode de remplissage contenues dans le contrôle. |
Frozen |
Obtient ou définit une valeur indiquant si une colonne se déplace lorsqu'un utilisateur fait défiler horizontalement le contrôle DataGridView. |
HasDefaultCellStyle |
Obtient une valeur indiquant si la propriété DefaultCellStyle a été définie. (Hérité de DataGridViewBand) |
HeaderCell |
Obtient ou définit DataGridViewColumnHeaderCell qui représente l'en-tête de colonne. |
HeaderCellCore |
Obtient ou définit la cellule d'en-tête du DataGridViewBand. (Hérité de DataGridViewBand) |
HeaderText |
Obtient ou définit le texte de légende pour la cellule d'en-tête de la colonne. |
Index |
Obtient la position relative de la bande dans le contrôle DataGridView. (Hérité de DataGridViewBand) |
InheritedAutoSizeMode |
Obtient le mode de dimensionnement défini pour la colonne. |
InheritedStyle |
Obtient le style de cellule actuellement appliqué à la colonne. |
IsDataBound |
Obtient une valeur indiquant si la colonne est liée à une source de données. |
IsRow |
Obtient une valeur indiquant si la bande représente une ligne. (Hérité de DataGridViewBand) |
MinimumWidth |
Obtient ou définit la largeur minimale, en pixels, de la colonne. |
Name |
Obtient ou définit le nom de la colonne. |
ReadOnly |
Obtient ou définit une valeur indiquant si l'utilisateur peut modifier les cellules de la colonne. |
Resizable |
Obtient ou définit une valeur indiquant si la colonne peut être redimensionnée. |
Selected |
Obtient ou définit une valeur indiquant si la bande se trouve dans un état sélectionné d'interface utilisateur. (Hérité de DataGridViewBand) |
Site |
Obtient ou définit le site de la colonne. |
SortMode |
Obtient ou définit le mode de tri de la colonne. |
State |
Obtient l'état d'interface utilisateur de l'élément. (Hérité de DataGridViewElement) |
Tag |
Obtient ou définit l'objet qui contient les données à associer à la bande. (Hérité de DataGridViewBand) |
ToolTipText |
Obtient ou définit le texte utilisé pour les info-bulles. |
ValueType |
Obtient ou définit le type de données des valeurs stockées dans les cellules de la colonne. |
Visible |
Obtient ou définit une valeur qui indique si la colonne est visible. |
Width |
Obtient ou définit la largeur actuelle de la colonne. |
Méthodes
Clone() |
Crée une copie exacte de cette bande. |
Dispose() |
Libère toutes les ressources utilisées par DataGridViewBand. (Hérité de DataGridViewBand) |
Dispose(Boolean) |
Libère les ressources non managées utilisées par DataGridViewBand et libère éventuellement les ressources managées. |
Equals(Object) |
Détermine si l'objet spécifié est égal à l'objet actuel. (Hérité de Object) |
GetHashCode() |
Fait office de fonction de hachage par défaut. (Hérité de Object) |
GetPreferredWidth(DataGridViewAutoSizeColumnMode, Boolean) |
Calcule la largeur idéale de la colonne en fonction des critères spécifiés. |
GetType() |
Obtient le Type de l'instance actuelle. (Hérité de Object) |
MemberwiseClone() |
Crée une copie superficielle du Object actuel. (Hérité de Object) |
OnDataGridViewChanged() |
Appelé lorsque la bande est associée à un DataGridView différent. (Hérité de DataGridViewBand) |
RaiseCellClick(DataGridViewCellEventArgs) |
Déclenche l’événement CellClick. (Hérité de DataGridViewElement) |
RaiseCellContentClick(DataGridViewCellEventArgs) |
Déclenche l’événement CellContentClick. (Hérité de DataGridViewElement) |
RaiseCellContentDoubleClick(DataGridViewCellEventArgs) |
Déclenche l’événement CellContentDoubleClick. (Hérité de DataGridViewElement) |
RaiseCellValueChanged(DataGridViewCellEventArgs) |
Déclenche l’événement CellValueChanged. (Hérité de DataGridViewElement) |
RaiseDataError(DataGridViewDataErrorEventArgs) |
Déclenche l’événement DataError. (Hérité de DataGridViewElement) |
RaiseMouseWheel(MouseEventArgs) |
Déclenche l’événement MouseWheel. (Hérité de DataGridViewElement) |
ToString() |
Obtient une chaîne qui décrit la colonne. |
Événements
Disposed |
Se produit lorsque DataGridViewColumn est supprimé. |