GridDropDown is not displaying items in Grid

[etu]

Hi,
 
I have GridDropDownColumn in RadGrid.In edit mode, i can select items from the GridDropDownColumn but when i click insert button, no items are shown in GridDropDownColumn in RadGrid.Can you help me?

Note : I am not using DataSource, i am using datatable in code to fill grid and dropdown.

In Edit Mode
Inserted Mode

[Princy]

Hi,

How do you bind your ComboBox? It would be better if you could send the code that you use.

Thanks
Princy.

[etu]

here my code and aspx file.
codes

I create a datatable which may have some invalid columns.
I bind datatable to RadGrid.On item databound i fill dropdown.I am new user of Radcontrols.If you see any major error in my code , i am sorry :)

[etu]

on aspx file , Although i tried datavaluefield,datatextfield,datafield properties in GridDropDownColumn, all the properties didnt work.

[Princy]

Hello Etu,

Your codes were not viewble. Anyways, you can bind your GridDropDownColumn in Edit/InsertMode as shown in the code below.
cs:

 protected void RadGrid2_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if (e.Item is GridEditableItem && e.Item.IsInEditMode)
        {
            GridEditableItem ititem = (GridEditableItem)e.Item;
            GridEditManager editMan = ititem.EditManager;
            GridDropDownListColumnEditor editor = (GridDropDownListColumnEditor)(editMan.GetColumnEditor("ComboBox"));

            string ConnectionString = "Data Source=INC135; Initial Catalog=MyDataBase;User ID=sa; Password=softinc";
            SqlConnection conn = new SqlConnection(ConnectionString);
            SqlCommand cmdCustomers = new SqlCommand("SELECT Age FROM Reservation", conn);
            cmdCustomers.CommandType = CommandType.Text;
            conn.Open();
            SqlDataReader reader = cmdCustomers.ExecuteReader();
            editor.DataSource = reader;
            editor.DataTextField = "Age";
            editor.DataBind();
            conn.Close();
        }
    }

For more information on Customizing a GridDropDownColumn refer to this link.

Princy.