Enable Filter option

[Vivek]

Hi Team,

I want to enable a filter options in my current project. but for somehow I am not able to enable it. I am trying this.

<telerik:RadGridView Name="GridView_Contractors" ItemsSource="{Binding}"  telerik:Theming.Theme="Office_Blue" CanUserFreezeColumns="False" RowIndicatorVisibility="Collapsed" AutoGenerateColumns="False"  >
 </telerik:RadGridView>

Please find the attach screenshot to see what we want to achieve.

I am not getting above options in my project.

Thanks,
Vivek.