I'm trying to authorize through Identity roles and then redirect to the appropriate page.

For example, when a user with the role of "admin" logs in, he is redirected to page1, when a user with the role of "user" logs in, he is redirected to page2.

I tried to implement this logic like this:

string roleId = "1";
IdentityUserRole userrole = new IdentityUserRole();
if (userrole.RoleId == roleId)
{
    try 
    {
        ...
        Response.Redirect("~/Page1.aspx");
    }
    catch
    {
        ...
    }
}