When GRidView's row is in edit mode, textboxes don't display current values

Question

Hi

1) I noticed that if we don’t bind GridView to object data source control, then when user puts GridView into edit mode, we have to handle GridView.RowEditing event (else we get an exception ) and in this event put GridView’s row into editing mode. Is there a reason why GridView doesn’t automatically put a row into edit mode?

2) When we manually bind GridView to one of DataSet’s tables and user puts a row into edit mode, row’s columns will replace fields with text boxes. But for some reason these text boxes don’t display current field values, but instead they don’t display any text at all. What am I doing wrong?

3) I’ve also handled gridView.RowUpdated event, so I could put row back into non-edit mode, but to no effect. I even tried by pressing Edit button of some other row, but row still wouldn’t go out of edit mode. Any ideas what I’m doing wrong?

protected void gvwEmployees_RowUpdated(object sender, GridViewUpdatedEventArgs e)
{
    e.KeepInEditMode = false; 
}

Thanx

Answer 1

When not using a DataSource control with a GridView or other data-bound control which hide the complexity of the manual data-binding you must manually handle RowEditing, RowUpdating, and RowDeleting etc. With the built in data model and automatic binding the GridView handles these events for you.

You haven't posted your RowEditing code, but i suspect that you are not setting the GridViews EditIndex to the NewEditIndex and are not rebinding, this is probably why you are not seeing current data.

protected void gvwEmployees_RowEditing(object sender, GridViewEditEventArgs e)
{
   GridView.EditIndex = e.NewEditINdex;
   BindData();
}

The same is true for your RowUpdating event. You will have to manually update your data, then set the EditIndex to -1, this will put your GridView back into ReadOnly mode. Keep in mind that e.OldValues, e.NewValues and e.Keys properties of the GridViewUpdateEventArgs are not populated when binding manually. This mean you'll have to take care of the update yourself by using e.RowIndex which is the index of the edited row.

protected void gvwEmployees_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
    GridView.EditIndex = -1;
    BindData();
}