How to add diffrent filteroptions for different columns

[Ram]

Hi
I have radgrid in my application.
I have once requirement.
I have 7 cloumns of string type and one datetime column.
I'm adding only 3 filter menu items for 6 string type columns.
I want to add some date specific options for Datetime field.
I'm adding filter options as below.

protected void callogGrd_Init(object sender, EventArgs e)
   {
       int i = 0;

       GridFilterMenu menu = callogGrd.FilterMenu;
       while (i < menu.Items.Count)
       {
           if ((menu.Items[i].Text == "Contains") || (menu.Items[i].Text == "StartsWith") || (menu.Items[i].Text == "NoFilter"))
           {
               i++;
           }
           else
           {
               menu.Items.RemoveAt(i);
           }
       }
   }

Its not showing for datetime fileds.
What are datetime specific filters and How cloud I add to only datetime filed.

[Princy]

Hello Ram,

You can take a look into the following documentation.
Filtering for DateTime Bound Column with DataFormatString Different from mm/dd/yyyy

Thanks,
Princy.