DataGridViewColumn 類別
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
表示 DataGridView 控制項中的資料行。
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
- 繼承
- 衍生
- 屬性
- 實作
範例
下列程式碼範例會建立具有 和 DataGridView 一組按鈕的 Windows Form。 每個按鈕標籤都會描述與屬性相關的 DataGridViewColumn 作業,例如使用 DisplayIndex 屬性) 交換第一個和最後一個資料行 (,或使用 屬性 (變更資料行標頭的文字) HeaderText 。 按一下按鈕會變更 的 DataGridViewColumn 相關聯屬性。
#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
備註
類別 DataGridViewColumn 代表 控制項中的 DataGridView 邏輯資料行。 您可以透過 Columns 控制項的集合擷取資料行。
DataGridViewRow不同于 包含 中 DataGridViewDataGridViewColumn 實際儲存格集合的 ,主要用來調整資料行使用者介面的外觀和行為, (UI) ,例如欄寬和儲存格樣式。 如需儲存格樣式的詳細資訊,請參閱dataGridView 控制項中的Windows Forms儲存格樣式。
衍生自 DataGridViewColumn 的類型通常會將 屬性初始化 CellTemplate 為衍生自 DataGridViewCell 類別之相關型別的新實例。 與個別儲存格外觀或行為相關的任何資料行屬性,都是樣板儲存格之對應屬性的包裝函式。 變更資料行上的其中一個屬性,會自動變更資料格範本和資料行中所有儲存格上的值。 若要覆寫個別儲存格的指定值,請在設定資料行值之後設定儲存格值。
給繼承者的注意事項
當您衍生自 DataGridViewColumn 並將新屬性新增至衍生類別時,請務必覆寫 Clone() 方法,以在複製作業期間複製新屬性。 您也應該呼叫基類的 Clone() 方法,以便基類的屬性複製到新的儲存格。
建構函式
DataGridViewColumn() |
初始化 DataGridViewColumn 類別的新執行個體為預設狀態。 |
DataGridViewColumn(DataGridViewCell) |
使用現有的 DataGridViewColumn 做為樣板,初始化 DataGridViewCell 類別的新執行個體。 |
屬性
AutoSizeMode |
取得或設定資料行自動調整其寬度所根據的模式。 |
CellTemplate |
取得或設定用來建立新儲存格的樣板。 |
CellType |
取得儲存格樣板的執行階段類型。 |
ContextMenuStrip |
取得或設定資料行的捷徑功能表。 |
DataGridView |
取得與這個項目有關聯的 DataGridView 控制項。 (繼承來源 DataGridViewElement) |
DataPropertyName |
取得或設定 DataGridViewColumn 所繫結的資料來源屬性或資料庫資料行的名稱。 |
DefaultCellStyle |
取得或設定資料行的預設儲存格樣式。 |
DefaultHeaderCellType |
取得或設定預設標題儲存格的執行階段型別。 (繼承來源 DataGridViewBand) |
Displayed |
取得值,指出此群組列目前是否顯示在螢幕上。 (繼承來源 DataGridViewBand) |
DisplayIndex |
取得或設定相對於目前所顯示之資料行的資料行顯示順序。 |
DividerWidth |
取得或設定資料行分割線的寬度 (以像素為單位)。 |
FillWeight |
取得或設定值,表示處於填入模式中的資料行寬度,相對於控制項中處於填入模式的資料行寬度。 |
Frozen |
取得或設定值,指出當使用者水平捲動 DataGridView 控制項時,資料行是否會跟著移動。 |
HasDefaultCellStyle |
取得指出是否已經設定 DefaultCellStyle 屬性的值。 (繼承來源 DataGridViewBand) |
HeaderCell |
取得或設定表示資料行行首的 DataGridViewColumnHeaderCell。 |
HeaderCellCore |
取得或設定 DataGridViewBand 的標題儲存格。 (繼承來源 DataGridViewBand) |
HeaderText |
取得或設定資料行行首儲存格上的標題文字。 |
Index |
取得 DataGridView 控制項內群組列的相對位置。 (繼承來源 DataGridViewBand) |
InheritedAutoSizeMode |
取得資料行的作用中調整大小模式。 |
InheritedStyle |
取得目前套用至資料行的儲存格樣式。 |
IsDataBound |
取得值指出資料行是否繫結至資料來源。 |
IsRow |
取得值,指出群組列是否表示資料列。 (繼承來源 DataGridViewBand) |
MinimumWidth |
取得或設定資料行的最小寬度 (以像素為單位)。 |
Name |
取得或設定資料行的名稱。 |
ReadOnly |
取得或設定值,指出使用者是否可以編輯資料行的儲存格。 |
Resizable |
取得或設定值,指出資料行是否可以重新調整大小。 |
Selected |
取得或設定值,指出群組列是否位於已選取的使用者介面 (UI) 狀態下。 (繼承來源 DataGridViewBand) |
Site |
取得或設定資料行的站台。 |
SortMode |
取得或設定資料行的排序模式。 |
State |
取得此項目的使用者介面 (UI) 狀態。 (繼承來源 DataGridViewElement) |
Tag |
取得或設定物件,其中包含與群組列相關的資料。 (繼承來源 DataGridViewBand) |
ToolTipText |
取得或設定供工具提示使用的文字。 |
ValueType |
取得或設定資枓行儲存格中的值之資料類型。 |
Visible |
取得或設定值,這個值指出是否看得到資料行。 |
Width |
取得或設定資料行的目前寬度。 |
方法
事件
Disposed |
發生於處置 (Dispose) DataGridViewColumn 時。 |