DataGridView.EditMode Vlastnost

Reference

Definice

Obor názvů:: System.Windows.Forms

Sestavení:: System.Windows.Forms.dll

Důležité

Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.

Získá nebo nastaví hodnotu označující, jak začít upravovat buňku.

public:
 property System::Windows::Forms::DataGridViewEditMode EditMode { System::Windows::Forms::DataGridViewEditMode get(); void set(System::Windows::Forms::DataGridViewEditMode value); };

public System.Windows.Forms.DataGridViewEditMode EditMode { get; set; }

member this.EditMode : System.Windows.Forms.DataGridViewEditMode with get, set

Public Property EditMode As DataGridViewEditMode

Hodnota vlastnosti

DataGridViewEditMode

Jedna z DataGridViewEditMode hodnot. Výchozí formát je EditOnKeystrokeOrF2.

Výjimky

InvalidEnumArgumentException

Zadaná hodnota při nastavení této vlastnosti není platná DataGridViewEditMode hodnota.

Exception

Zadaná hodnota při nastavování této vlastnosti by způsobila, že ovládací prvek přejde do režimu úprav, ale inicializace hodnoty buňky pro úpravy se nezdařila a buď pro událost neexistuje žádná obslužná rutina DataError , nebo obslužná rutina nastavila ThrowException vlastnost na true. Objekt výjimky lze obvykle přetypovat na typ FormatException.

Příklady

Následující příklad kódu ukazuje, jak inicializovat jednoduché data vázané DataGridView. Ukazuje také, jak nastavit EditMode vlastnost .

#using <System.Transactions.dll>
#using <System.EnterpriseServices.dll>
#using <System.Xml.dll>
#using <System.Drawing.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Data.dll>

using namespace System;
using namespace System::Data;
using namespace System::Data::SqlClient;
using namespace System::Windows::Forms;
using namespace System::Drawing;
public ref class Form1: public System::Windows::Forms::Form
{
public:
   Form1()
      : Form()
   {
      
      //This call is required by the Windows Form Designer.
      InitializeComponent();
      InitializeDataGridView();
      
      //Add any initialization after the InitializeComponent() call
   }


protected:

   ~Form1()
   {
      if ( components != nullptr )
      {
         delete components;
      }
   }

private:
   System::Windows::Forms::DataGridView ^ dataGridView1;
   System::Windows::Forms::BindingSource ^ bindingSource1;

   //Required by the Windows Form Designer
   System::ComponentModel::IContainer^ components;

   //NOTE: The following procedure is required by the Windows Form Designer
   //It can be modified using the Windows Form Designer.  
   //Do not modify it using the code editor.

   [System::Diagnostics::DebuggerNonUserCode]
   void InitializeComponent()
   {
      this->dataGridView1 = gcnew System::Windows::Forms::DataGridView;
      this->bindingSource1 = gcnew System::Windows::Forms::BindingSource;
      this->SuspendLayout();

      //
      //DataGridView1
      //
      this->dataGridView1->Location = System::Drawing::Point( 96, 71 );
      this->dataGridView1->Name = "DataGridView1";
      this->dataGridView1->Size = System::Drawing::Size( 321, 286 );
      this->dataGridView1->TabIndex = 0;

      //
      //Form1
      //
      this->ClientSize = System::Drawing::Size( 518, 413 );
      this->Controls->Add( this->dataGridView1 );
      this->Name = "Form1";
      this->Text = "Form1";
      this->ResumeLayout( false );
   }

internal:

   static property Form1^ GetInstance 
   {
      Form1^ get()
      {
         if ( m_DefaultInstance == nullptr || m_DefaultInstance->IsDisposed )
         {
            System::Threading::Monitor::Enter( m_SyncObject );
            try
            {
               if ( m_DefaultInstance == nullptr || m_DefaultInstance->IsDisposed )
               {
                  m_DefaultInstance = gcnew Form1;
               }
            }
            finally
            {
               System::Threading::Monitor::Exit( m_SyncObject );
            }
         }

         return m_DefaultInstance;
      }
   }

private:
   static Form1^ m_DefaultInstance;
   static Object^ m_SyncObject = gcnew Object;

   void InitializeDataGridView()
   {
      try
      {
         // Set up the DataGridView.
         dataGridView1->Dock = DockStyle::Fill;

         // Automatically generate the DataGridView columns.
         dataGridView1->AutoGenerateColumns = true;

         // Set up the data source.
         bindingSource1->DataSource = GetData( "Select * From Products" );
         dataGridView1->DataSource = bindingSource1;

         // Automatically resize the visible rows.
         dataGridView1->AutoSizeRowsMode = DataGridViewAutoSizeRowsMode::DisplayedCellsExceptHeaders;

         // Set the DataGridView control's border.
         dataGridView1->BorderStyle = BorderStyle::Fixed3D;

         // Put the cells in edit mode when user enters them.
         dataGridView1->EditMode = DataGridViewEditMode::EditOnEnter;
      }
      catch ( SqlException^ ) 
      {
         MessageBox::Show( "To run this sample replace connection.ConnectionString"
         " with a valid connection string to a Northwind"
         " database accessible to your system.", "ERROR", MessageBoxButtons::OK, MessageBoxIcon::Exclamation );
         System::Threading::Thread::CurrentThread->Abort();
      }
      catch ( System::Exception^ ex ) 
      {
         MessageBox::Show( ex->ToString() );
      }
   }


   DataTable^ GetData( String^ sqlCommand )
   {
      String^ connectionString = "Integrated Security=SSPI;Persist Security Info=False;"
      "Initial Catalog=Northwind;Data Source= localhost";
      SqlConnection^ northwindConnection = gcnew SqlConnection( connectionString );
      SqlCommand^ command = gcnew SqlCommand( sqlCommand,northwindConnection );
      SqlDataAdapter^ adapter = gcnew SqlDataAdapter;
      adapter->SelectCommand = command;
      DataTable^ table = gcnew DataTable;
      adapter->Fill( table );
      return table;
   }
};

int main()
{
   Application::Run( gcnew Form1 );
}

using System;
using System.Data;
using System.Data.SqlClient;
using System.Windows.Forms;
using System.Drawing;

public class Form1 : System.Windows.Forms.Form
{
    private DataGridView dataGridView1 = new DataGridView();
    private BindingSource bindingSource1 = new BindingSource();

    public Form1()
    {
        dataGridView1.Dock = DockStyle.Fill;
        this.Controls.Add(dataGridView1);
        InitializeDataGridView();
    }

    private void InitializeDataGridView()
    {
        try
        {
            // Set up the DataGridView.
            dataGridView1.Dock = DockStyle.Fill;

            // Automatically generate the DataGridView columns.
            dataGridView1.AutoGenerateColumns = true;

            // Set up the data source.
            bindingSource1.DataSource = GetData("Select * From Products");
            dataGridView1.DataSource = bindingSource1;

            // Automatically resize the visible rows.
            dataGridView1.AutoSizeRowsMode =
                DataGridViewAutoSizeRowsMode.DisplayedCellsExceptHeaders;

            // Set the DataGridView control's border.
            dataGridView1.BorderStyle = BorderStyle.Fixed3D;

            // Put the cells in edit mode when user enters them.
            dataGridView1.EditMode = DataGridViewEditMode.EditOnEnter;
        }
        catch (SqlException)
        {
            MessageBox.Show("To run this sample replace connection.ConnectionString" +
                " with a valid connection string to a Northwind" +
                " database accessible to your system.", "ERROR",
                MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            System.Threading.Thread.CurrentThread.Abort();
        }
    }

    private static DataTable GetData(string sqlCommand)
    {
        string connectionString = "Integrated Security=SSPI;" +
            "Persist Security Info=False;" +
            "Initial Catalog=Northwind;Data Source=localhost";

        SqlConnection northwindConnection = new SqlConnection(connectionString);

        SqlCommand command = new SqlCommand(sqlCommand, northwindConnection);
        SqlDataAdapter adapter = new SqlDataAdapter();
        adapter.SelectCommand = command;

        DataTable table = new DataTable();
        table.Locale = System.Globalization.CultureInfo.InvariantCulture;
        adapter.Fill(table);

        return table;
    }

    [STAThreadAttribute()]
    public static void Main()
    {
        Application.Run(new Form1());
    }
}

Imports System.Data
Imports System.Data.SqlClient
Imports System.Windows.Forms
Imports System.Drawing
Public Class Form1
    Inherits System.Windows.Forms.Form

    Private WithEvents dataGridView1 As New DataGridView()
    Private bindingSource1 As New BindingSource()

    Public Sub New()

        Me.dataGridView1.Dock = DockStyle.Fill
        Me.Controls.Add(Me.dataGridView1)
        InitializeDataGridView()

    End Sub

    Private Sub InitializeDataGridView()
        Try
            ' Set up the DataGridView.
            With Me.dataGridView1
                ' Automatically generate the DataGridView columns.
                .AutoGenerateColumns = True

                ' Set up the data source.
                bindingSource1.DataSource = GetData("Select * From Products")
                .DataSource = bindingSource1

                ' Automatically resize the visible rows.
                .AutoSizeRowsMode = _
                    DataGridViewAutoSizeRowsMode.DisplayedCellsExceptHeaders

                ' Set the DataGridView control's border.
                .BorderStyle = BorderStyle.Fixed3D

                ' Put the cells in edit mode when user enters them.
                .EditMode = DataGridViewEditMode.EditOnEnter
            End With
        Catch ex As SqlException
            MessageBox.Show("To run this sample replace " _
                & "connection.ConnectionString with a valid connection string" _
                & "  to a Northwind database accessible to your system.", _
                "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            System.Threading.Thread.CurrentThread.Abort()
        End Try
    End Sub

    Private Shared Function GetData(ByVal sqlCommand As String) _
        As DataTable

        Dim connectionString As String = _
            "Integrated Security=SSPI;Persist Security Info=False;" _
            & "Initial Catalog=Northwind;Data Source=localhost"

        Dim northwindConnection As SqlConnection = _
            New SqlConnection(connectionString)

        Dim command As New SqlCommand(sqlCommand, northwindConnection)
        Dim adapter As SqlDataAdapter = New SqlDataAdapter()
        adapter.SelectCommand = command

        Dim table As New DataTable
        table.Locale = System.Globalization.CultureInfo.InvariantCulture
        adapter.Fill(table)

        Return table

    End Function

    <STAThreadAttribute()> _
    Public Shared Sub Main()
        Application.Run(New Form1)
    End Sub

End Class

Poznámky

Všechny DataGridViewEditMode hodnoty s výjimkou EditProgrammatically také umožňují uživateli poklikání na buňku, aby ji mohl začít upravovat.

Platí pro

Viz také

DataGridView – ovládací prvek (Windows Forms)

Sdílet prostřednictvím