[Solved] Add Validator to GridDateTimeColumn

[Markus]

I just tried to figure out how to add a RequiredFieldValidator to an GridDateTimeColumn.

I tried the code from this example in the documentation, but it didn't work for the DateTimeColumn because editor.TextBoxControl is always null. Instead you have to get a reference to the PickerControl:

void RadGrid1_ItemCreated(object sender, Telerik.Web.UI.GridItemEventArgs e)
{
    if (e.Item.IsInEditMode && e.Item is GridEditableItem)
    {
        GridEditableItem item = e.Item as GridEditableItem;

        GridDateTimeColumnEditor dateEditor = item.EditManager.GetColumnEditor("StartDate") as GridDateTimeColumnEditor;
        // Adding a validator to the DateTimeColumn. This one works
        if (dateEditor != null && dateEditor.PickerControl != null)
        {
            TableCell cell = dateEditor.PickerControl.Parent as TableCell;

            //Don't set the id here. Otherwise you'll get an exception
            //dateEditor.PickerControl.ID = "StartDate_ID_Validation";

            RequiredFieldValidator validator = new RequiredFieldValidator();
            validator.ControlToValidate = dateEditor.PickerControl.ID;
            validator.ErrorMessage = "StartDate required";
            cell.Controls.Add(validator);
        }
    }
}

I don't know if this is the desired behaviour or a bug (I mean TextBoxControl being null), but it works fine.

Best regards
Sebastian

[Missing User]

Hello Sebastian,

You can use the same approach as described in the help article. You simply have to use PickerControl instead of TextBoxControl property


All the best,
Plamen
the Telerik team

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