The EditCommandColumn class is a special type of
column used with the DataGrid control. It provides
an "Edit" button or link (depending
on the ButtonType property) that, when clicked,
fires the DataGrid.EditCommand event. This event
allows you to initiate editing for a row by using the
DataGrid.EditItemIndex property (after which you
must rebind to the data source).
While editing is in progress, the
EditCommandColumn displays
"Cancel" and
"Update" buttons instead of an
"Edit" button. These will trigger
the DataGrid.CancelCommand and
DataGrid.UpdateCommand events, respectively. In
these events, you can add the code required to commit changes to the
data source and cancel editing (by setting
DataGrid.EditItemIndex to -1). Rebind to the data
source before returning the page.
Note that you must provide values for the
CancelText, EditText, and
UpdateText properties (like
"Cancel",
"Edit", and
"Update"). Otherwise, the
associated command buttons will not appear in the column when editing
is underway.
public class EditCommandColumn : DataGridColumn {
// Public Constructors
public EditCommandColumn( );
// Public Instance Properties
public virtual ButtonColumnType ButtonType{set; get; }
public virtual string CancelText{set; get; }
public virtual string EditText{set; get; }
public virtual string UpdateText{set; get; }
// Public Instance Methods
public override void InitializeCell(TableCell cell, int columnIndex, ListItemType itemType);
// overrides DataGridColumn
}
DataGridColumn(System.Web.UI.IStateManager) 
