DataGridViewCellValidatingEventArgs.ColumnIndex Propriété
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.
Obtient l'index de colonne de la cellule à valider.
public:
property int ColumnIndex { int get(); };public int ColumnIndex { get; }member this.ColumnIndex : intPublic ReadOnly Property ColumnIndex As IntegerValeur de propriété
Entier de base zéro qui spécifie l'index de colonne de la cellule à valider.
Exemples
L’exemple de code suivant illustre l’utilisation de cette propriété. Cet exemple fait partie d’un exemple plus large disponible dans How to: Validate Data in the Windows Forms DataGridView Control.
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