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DataGrid.AutoGeneratingColumn Ereignis

Definition

Tritt auf, wenn eine einzelne Spalte automatisch generiert wird.

public:
 event EventHandler<System::Windows::Controls::DataGridAutoGeneratingColumnEventArgs ^> ^ AutoGeneratingColumn;
public event EventHandler<System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs> AutoGeneratingColumn;
member this.AutoGeneratingColumn : EventHandler<System.Windows.Controls.DataGridAutoGeneratingColumnEventArgs> 
Public Custom Event AutoGeneratingColumn As EventHandler(Of DataGridAutoGeneratingColumnEventArgs) 
Public Event AutoGeneratingColumn As EventHandler(Of DataGridAutoGeneratingColumnEventArgs) 

Ereignistyp

Beispiele

Das folgende Beispiel zeigt, wie Spalten automatisch generiert und die Spalten beim Erstellen im AutoGeneratingColumn Ereignishandler geändert werden.

<!-- The DataGrid.DataContext is a DataTable that contains a list of customers.  The DataTable columns are  
     Title, FirstName, MiddleName, LastName, Suffix, CompanyName, EmailAddress, and Phone.-->
<DataGrid Name="DG1" ItemsSource="{Binding}" AutoGenerateColumns="True" AutoGeneratingColumn="DG1_AutoGeneratingColumn" />
//Access and update columns during autogeneration
private void DG1_AutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)
{
    string headername = e.Column.Header.ToString();

    //Cancel the column you don't want to generate
    if (headername == "MiddleName")
    {
        e.Cancel = true;
    }

    //update column details when generating
    if (headername == "FirstName")
    {
        e.Column.Header = "First Name";
    }
    else if (headername == "LastName")
    {
        e.Column.Header = "Last Name";
    }
    else if (headername == "EmailAddress")
    {
        e.Column.Header = "Email";
    }
}
'Access and update columns during autogeneration
Private Sub DG1_AutoGeneratingColumn(ByVal sender As Object, ByVal e As DataGridAutoGeneratingColumnEventArgs)
    Dim headername As String = e.Column.Header.ToString()
    'Cancel the column you don't want to generate
    If headername = "MiddleName" Then
        e.Cancel = True
    End If

    'update column details when generating
    If headername = "FirstName" Then
        e.Column.Header = "First Name"
    ElseIf headername = "LastName" Then
        e.Column.Header = "Last Name"
    ElseIf headername = "EmailAddress" Then
        e.Column.Header = "Email"
    End If
End Sub

Hinweise

Sie können die im Ereignishandler erstellte AutoGeneratingColumn Spalte ändern oder abbrechen.

Wenn alle Spalten automatisch generiert werden, tritt das AutoGeneratedColumns -Ereignis auf.

Gilt für:

Weitere Informationen