DataGridViewCellValidatingEventArgs.ColumnIndex Eigenschaft

public:
 property int ColumnIndex { int get(); };

public int ColumnIndex { get; }

member this.ColumnIndex : int

Public ReadOnly Property ColumnIndex As Integer

Eigenschaftswert

Eine nullbasierte ganze Zahl, die den Spaltenindex der Zelle angibt, die überprüft werden muss.

Beispiele

Das folgende Codebeispiel veranschaulicht die Verwendung dieser Eigenschaft. Dieses Beispiel ist Teil eines größeren Beispiels, das in How to: Validate Data in the Windows Forms DataGridView Control verfügbar ist.

private void dataGridView1_CellValidating(object sender,
    DataGridViewCellValidatingEventArgs e)
{
    string headerText = 
        dataGridView1.Columns[e.ColumnIndex].HeaderText;

    // Abort validation if cell is not in the CompanyName column.
    if (!headerText.Equals("CompanyName")) return;

    // Confirm that the cell is not empty.
    if (string.IsNullOrEmpty(e.FormattedValue.ToString()))
    {
        dataGridView1.Rows[e.RowIndex].ErrorText =
            "Company Name must not be empty";
        e.Cancel = true;
    }
}

void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)
{
    // Clear the row error in case the user presses ESC.   
    dataGridView1.Rows[e.RowIndex].ErrorText = String.Empty;
}

Private Sub dataGridView1_CellValidating(ByVal sender As Object, _
    ByVal e As DataGridViewCellValidatingEventArgs) _
    Handles dataGridView1.CellValidating

    Dim headerText As String = _
        dataGridView1.Columns(e.ColumnIndex).HeaderText

    ' Abort validation if cell is not in the CompanyName column.
    If Not headerText.Equals("CompanyName") Then Return

    ' Confirm that the cell is not empty.
    If (String.IsNullOrEmpty(e.FormattedValue.ToString())) Then
        dataGridView1.Rows(e.RowIndex).ErrorText = _
            "Company Name must not be empty"
        e.Cancel = True
    End If
End Sub

Private Sub dataGridView1_CellEndEdit(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
    Handles dataGridView1.CellEndEdit

    ' Clear the row error in case the user presses ESC.   
    dataGridView1.Rows(e.RowIndex).ErrorText = String.Empty

End Sub

Weitere Informationen

• DataGridView
• CellValidating
• DataGridViewCell
• RowIndex