DataRow.Item Property (DataColumn)
Gets or sets the data stored in the specified DataColumn.
Assembly: System.Data (in System.Data.dll)
Parameters
- column
-
Type:
System.Data.DataColumn
A DataColumn that contains the data.
| Exception | Condition |
|---|---|
| ArgumentException | The column does not belong to this table. |
| ArgumentNullException | The column is null. |
| DeletedRowInaccessibleException | An attempt was made to set a value on a deleted row. |
| InvalidCastException | The data types of the value and the column do not match. |
When you set the property, an exception is generated if an exception occurs in the ColumnChanging event.
If this is an immediate edit, see EndEdit for the exceptions that can be generated.
The following examples demonstrate the use of the Item property to get and set the value of a specific column index. The first example gets the value of the first column in any row that a user clicks in a DataGrid control. The second sets a value passed as an argument to the method.
Private Sub DataGrid1_Click(ByVal sender As System.Object, _ ByVal e As System.EventArgs) Dim dataGridTable As DataTable = _ CType(DataGrid1.DataSource, DataTable) ' Set the current row using the RowNumber ' property of the CurrentCell. Dim currentRow As DataRow = _ dataGridTable.Rows(DataGrid1.CurrentCell.RowNumber) Dim column As DataColumn = dataGridTable.Columns(1) ' Get the value of the column 1 in the DataTable. label1.Text = currentRow(column).ToString() End Sub Private Sub SetDataRowValue( _ ByVal grid As DataGrid, ByVal newVal As Object) ' Set the value of a column in the last row of a DataGrid. Dim table As DataTable = CType(grid.DataSource, DataTable) Dim row As DataRow = table.Rows(table.Rows.Count - 1) Dim column As DataColumn = table.Columns("FirstName") row(column)= newVal End Sub
Available since 1.1