Change EditForm Controls Dynamically

[ReneF]

Hi,
I am using RadGrid ASP.NET Ajax 2008 Q2. Is that possible to change EditForm Controls dynamically on Edit Command depends on current dataType? I have a simple Grid with three columns as follows:
Name                            Value                Type
Installation date              12.12.2008        DateTime
newModemRequired       false                  Boolean
installation by                  myEmployee     String

Purpose:
1.  Select item to Edit.
2.  Get the DataType on selecttion
3.  Render EditForms on CreateColumnEditor

 protected void RadGrid1_CreateColumnEditor(object sender, GridCreateColumnEditorEventArgs e)
         {
              //string getDataTypeAtIndex(int index) => Extract Values from Grid item.
             string myType=getDataTypeAtIndex(RadGrid1.SelectedItems[0].ItemIndex);

                     if (e.Column.UniqueName == "Value")
                     {
                         if (myType =="Boolean")
                         {
                             Telerik.Web.UI.GridCheckBoxColumnEditor boolFieldEditor = new Telerik.Web.UI.GridCheckBoxColumnEditor();
                             e.ColumnEditor = boolFieldEditor;
                         }
                         else if (myType == "DateTime")
                         {
                             Telerik.Web.UI.GridDateTimeColumnEditor dateFieldEditor = new GridDateTimeColumnEditor();
                             e.ColumnEditor = dateFieldEditor;
                         }

                        //String or Integer
                         else
                         {

                             Telerik.Web.UI.GridTextBoxColumnEditor textFieldEditor = new Telerik.Web.UI.GridTextBoxColumnEditor();
                             e.ColumnEditor = textFieldEditor;
                         }
                     }
                 }

That Code compiles but on runtime if I Click Edit Button I get an error like 'Message from server can not be parsed...'
Thanks for any help

[Princy]

Hi ReneF,

If you want to replace the default EditForm controls with the Desired controls according to cell value, you can try out the following code.
cs:

protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
       if(e.Item is GridEditableItem && e.Item.IsInEditMode)
        {
               GridEditableItem item=(GridEditableItem)e.Item;
               TextBox txtbx = (TextBox)item["DataType"].Controls[0];
               if (txtbx.Text == "Bool")
               {
                   item["DataType"].Controls.Remove(txtbx);
                   CheckBox checkbox =new CheckBox();
                   checkbox.ID = "CheckBox1";
                   item["DataType"].Controls.Add(checkbox);
               }
               else if (txtbx.Text == "DateTime")
               {
                   item["DataType"].Controls.Remove(txtbx);
                   RadDateInput date = new RadDateInput();
                   date.ID = "RadDateInput1";
                   item["DataType"].Controls.Add(date);
               }
        }
    }

Thanks
Princy.

[ReneF]

Hi Princy,
Thanks for your reply. I tried your code but the same result. It caused exeption on runtime like 'The message from server could not be parsed' ..
I read the value of dataType Field and change the controls on Value Field.
Here is my code:

 protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
       {
        if (e.Item is GridEditableItem && e.Item.IsInEditMode)
        {
            GridEditableItem item = (GridEditableItem)e.Item;
            TextBox txtbx = (TextBox)item["type"].Controls[0];
            if (txtbx.Text == "Boolean")
            {
                item["Value"].Controls.Remove(item["Value"].Controls[0]);
                CheckBox checkbox = new CheckBox();
                checkbox.ID = "CheckBox1";
                item["Value"].Controls.Add(checkbox);
            }
            else if (txtbx.Text == "DateTime")
            {
                item["Value"].Controls.Remove(item["Value"].Controls[0]);
                RadDateInput date = new RadDateInput();
                date.ID = "RadDateInput1";
                item["Value"].Controls.Add(date);
            }
        }
       }

Best Regards

[ReneF]

Hi Princy,
Thanks again for your help. I solved the problem. Removing the EditControls in EditMode caused the Exception.
Solution:
1. Create new Controls(DatePicker, CheckBox etc) on ItemDataBound and Set visible property to false for old controls.
2. On Update Command get Values from new created controls and save.

Best Regards