YES NO. Tell us how we can improve this demo. Submit Skip. Add new record Refresh. Employee Details. To limit the number of characters the user can enter in the text box editor of the edit form, set the MaxLength property of the column.
In event handlers such as the ItemCreated event for example , you can cast the item to GridEditableItem a base class of GridDataItem when the item is in edit mode:. When the item is edited, you can cast it to GridEditFormItem a class that extends the GridEditableItem class to reference the controls in it. The GridEditFormItem class has an EditFormCell property that provides access to the cell which wraps the controls inside the edit form.
The grid's EditItems collection contains the items rows of the grid that are currently being edited. When using InPlace edit mode, these items contain the edit controls. Related Resources Updating values with user control edit form Inserting values with user control edit form Deleting records Popup Edit Form. Was this demo helpful? YES NO. Tell us how we can improve this demo. Submit Skip. Add new record Refresh. Check whether the type of item is GridEditFormItem and whether the item is in edit mode.
Locate the user control inside the GridEditFormItem and make the modifications you wish. Here is an example that sets the text for a TextBox that resides inside the user control:. To select the proper item in a drop-down list inside your UserControl , handle the DataBinding event of the user control. Inside the event handler, bind the drop-down list and set its SelectedIndex accordingly:.
An important detail is to assign empty data source for the drop-down list to prevent binding it again at a later stage when the rest of the edited item content is bound. The same conventions stand for nested user controls inside WebUserControl custom edit form or other controls such as listboxes, radiobutton lists, checkbox lists, and so on.
For a live example that shows a custom edit form implemented using a UserControl, see User control edit form. When EditFormType is "Template", you can supply a template that the table view uses to generate the edit form. If the EditFormType for the table view has been set to "Template", the EditFormTemplate appears in the drop-down list of available templates.
When you select that item, you can use the Template design surface to generate your template:. When using a template to implement a custom edit form, you can bind the items using DataBinder expressions:. For a live example that shows a custom edit form implemented using a template, see Form template edit form.
When using Automatic DataSource operations , use the Bind syntax to bind template controls. This allows the grid to extract updated values and pass them to the data source with no additional code on your part. Just like with the UserControl , when using a template form for a custom edit form, you can handle the ItemDataBound event of the grid to access the controls in edit form and set their properties when the control is bound. Here is an example that sets the text for a TextBox that resides inside the form template:.
You can create and assign the edit form template at runtime in the code-behind. To do this, you must design a class that implements the IBindableTemplate interface and assign an instance of that class to the EditFormSettings.
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