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Cannot find Checkboxlist in RadGrid1_ItemUpdated

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Marco Rosignoli asked on 12 Apr 2010, 08:42 AM

I add by code my checkboxlist in ItemDataBound event

    
            protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)  
        
            {  
        
             CheckBoxList chkLst = null;

            // add checkboxlist only in edit item
        
             if ((e.Item is GridEditableItem) && (e.Item.IsInEditMode))  
        
             {  
        
                  chkLst = new CheckBoxList();  
        
                  chkLst.ID = "MyCheckLst";  
        
                  lst = new ListItem("Item1", "1");  
        
                  chkLst.Items.Add(lst);  
        
                  lst = new ListItem("Item2", "2");  
        
                  chkLst.Items.Add(lst);  

                  // Add checkboxlist to CheckBox (every checkbox have a checkboxlist)
      (GridEditableItem)e.Item["MyCheck"
].Controls.Add(chkLst);
            
             }

In RadGrid1_ItemUpdated event i try to retrive the checkboxlist

    
            protected void RadGrid1_ItemUpdated(object source,Telerik.Web.UI.GridUpdatedEventArgs e)  
        
            {  
        
                CheckBoxList cbl = (CheckBoxList)e.Item["MyCheckLst"].Controls[0];  
        
            }

This is the error:
{"Cannot find a cell bound to column name 'MyCheckLst'"} System.Exception {Telerik.Web.UI.GridException}

If I edit the row I can see the checkboxlist, but if I show page HTML I have not any checkboxlist!!!
Please, HELP!!!

2 Answers, 1 is accepted

answered on 12 Apr 2010, 11:38 AM

Hello Marco,

Try adding the CheckBoxList control in ItemCreated event also and check whether it is working fine.

CS:

    
            protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
 
                {
 
                    if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
 
                    {
 
                        GridEditFormItem edititem = (GridEditFormItem)e.Item;
 
                        CheckBoxList chkLst;
 
                        ListItem lst;
 
                        chkLst = new CheckBoxList();
 
                        lst = new ListItem("Item1", "1");
 
                        chkLst.Items.Add(lst);
 
                        lst = new ListItem("Item2", "2");
 
                        chkLst.Items.Add(lst);
 
                        edititem["ColumnUniqueName"].Controls.Add(chkLst);
 
                    }
 
                }
 
                protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
 
                {
 
                    if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
 
                    {
 
                        GridEditFormItem edititem = (GridEditFormItem)e.Item;
 
                        CheckBoxList chkLst;
 
                        ListItem lst;
 
                        chkLst = new CheckBoxList();
 
                        chkLst.ID = "MyCheckLst";
 
                        lst = new ListItem("Item1", "1");
 
                        chkLst.Items.Add(lst);
 
                        lst = new ListItem("Item2", "2");
 
                        chkLst.Items.Add(lst);
 
                        edititem["ColumnUniqueName"].Controls.Add(chkLst);
 
                    }
 
                }
 
                protected void RadGrid1_ItemUpdated(object source, GridUpdatedEventArgs e)
 
                {
 
                    // Code for accessing the control
 
                    CheckBoxList cbl = (CheckBoxList)e.Item.FindControl("MyCheckLst");
 
                }

Also checkout the following link:

Distinguishing the major differences between ItemCreated and ItemDataBound events

-Shinu.