[Solved] Getting values back from WebUserControl

[Deon van Staden]

I have a custom UserControl set for the editing on the GridControl.
I need to get the Text value from a TextBox on this UserControl back to the Server.

Sofar, I tried to access this using the following:

UserControl userControl = (UserControl)e.Item.FindControl GridEditFormItem.EditFormUserControlID);

string result = (userControl.FindControl("txtNote") as TextBox).Text;

This is returning "" on the server side. 

How can I perform a postback on this textbox in order for the Server to get the values from the client?

Any help please?

[Shinu]

Hi,

You can try the following code snippet in the ItemDataBound event to access the TextBox value from the UserControl when the Grid is in edit mode.

CS:

  protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        if ((e.Item is GridEditFormItem) && (e.Item.IsInEditMode))
        {
            GridEditFormItem editform = (GridEditFormItem)e.Item;
            UserControl userControl = (UserControl)editform.FindControl(GridEditFormItem.EditFormUserControlID);
            string result = (userControl.FindControl("txtNote") as TextBox).Text;
        }
   }

Try the below given code to access the Updated text from the TextBox when the Update button is clicked.

CS:

 protected void RadGrid1_UpdateCommand(object source, GridCommandEventArgs e)
    {
        GridEditFormItem editform = (GridEditFormItem)e.Item;
        UserControl userControl = (UserControl)editform.FindControl(GridEditFormItem.EditFormUserControlID);
        string result = (userControl.FindControl("txtNote") as TextBox).Text;

    }

Thanks
Shinu

[Sean]

Do you have this in a VB.net Sample?

[Sean]

I changed the code to this

 

Dim editform As GridEditFormItem = e.Item<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim userControl As UserControl = editform.FindControl(GridEditFormItem.EditFormUserControlID)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Dim result As String = CType(userControl.FindControl("textbox11"), TextBox).Text<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; MsgBox(result)

and got  "Object reference not set to an instance of an object."

[Yavor]

Hello Sean,

The following example demonstrates in practice how to reference the user control elements, and handle the update.
I hope it helps.

Best wishes,
Yavor
the Telerik team

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