Hi ZarrinPour,
Try the code below for conditional checking from server side before redirecting to another page.
aspx:
<telerik:RadToolBar ID="RadToolBar1" Width="1000px" runat="server" OnButtonClick="RadToolBar1_ButtonClick">
<Items>
<telerik:RadToolBarButton Text="page1" CommandName="page1" ></telerik:RadToolBarButton>
<telerik:RadToolBarButton Text="page2" CommandName="page2" ></telerik:RadToolBarButton>
</Items>
</telerik:RadToolBar>
Put a label on your page with the corresponding ID (InjectScript in this example).
This way when you execute InjectScript.Text = "<script type='text/javascript'>alert('your message here')</" + "script>" from your codebehind,
cs:
protected void RadToolBar1_ButtonClick(object sender, RadToolBarEventArgs e)
{
//write the conditional check here
if(e.Item.Text =='Page1' && ............................)
{
InjectScript.Text = "<script type='text/javascript'>alert('your message here')</" + "script>"
}
}
Hope this helps.
-shinu.