Sets the error description for a column specified as a DataColumn.
[Visual Basic] Overloads Public Sub SetColumnError( _ ByVal column As DataColumn, _ ByVal error As String _ ) [C#] public void SetColumnError( DataColumn column, string error ); [C++] public: void SetColumnError( DataColumn* column, String* error ); [JScript] public function SetColumnError( column : DataColumn, error : String );
To examine error descriptions, use the GetColumnError method.
To determine if any errors exist for the columns collection, use the HasErrors method. Consequently, you can use the GetColumnsInError method to retrieve all of the columns with errors.
To set a custom error description on the whole row, use the RowError property.
To determine if any errors exist for the columns collection, use the HasErrors method.
To clear all errors for the columns collection, use the ClearErrors method.
The following example sets and gets the error description for a new column in an existing System.WinForms.DataGrid control's DataTable.
[Visual Basic]
Dim myRow As DataRow Dim t As DataTable Dim c As DataColumn t = DataGrid1.DataGridTable.DataTable ' Get the column from the existing column collection. c = t.Columns(0) myRow = t.NewRow Dim ErrorString As String ErrorString = "Replace this text." ' Use DataColumn.Contains to ensure the column exists If myRow.DataTable.Columns.Contains(c.ColumnName) Then myRow.SetColumnError c, ErrorString Console.WriteLine(myRow.GetColumnError(c)) ' Add the row t.Rows.Add(myRow) End If
DataRow Class | DataRow Members | System.Data Namespace | DataRow.SetColumnError Overload List | ClearErrors | ColumnsCollection | Contains | DataColumn | Error | GetColumnsInError | HasErrors | RowError