Question

I have a form that searches all rows in a single table (TServices) that occurred between the date range and then populates a dynamic table below the form.

Now I’m adding a delete ImageButton next to each listing in the table. Here’s my C# code-behind for adding the ImageButtons to the table cell:

        ImageButton btnRemoveService = new ImageButton();         btnRemoveService.EnableViewState = true;         btnRemoveService.ImageUrl = '/images/icons/trash.gif';         btnRemoveService.Click += new ImageClickEventHandler(btnRemoveService_Click);         btnRemoveService.ID = 'btnRemoveService-' + row['BillingID'].ToString();         btnRemoveService.CommandArgument = row['BillingID'].ToString();         tblCell.Controls.Add(btnRemoveService); 

Even if I put nothing in btnRemoveService_Click(), all my data from the dynamic table disappears. When I put in the code to actually delete the stored procedure, the data disappears from the dynamic table and nothing is changed in the db.

Edit: I moved the populate code into its own function and called it at the end of btnRemoveService_Click(). Shouldn’t this reload the data?

Answer 1

Your error is due to the fact that you must add dynamically created controls to the page on EVERY load. If you re-add them inside the page_init method they will exist for viewstate to load and for the click events to fire successfully. It is all related to the ASP.NET Page Load process