private void BindUserDropdown()
{
CourseModule course = new CourseModule();
//SiteUser users = new SiteUser();
List <SiteUser> users = SiteUser.LoadInstructors(SiteId);
List <Role> roles = Role.GetbySite(SiteId).Where(t => t.IsC21Role).ToList();
List <Audience> audience = course.LoadAudienceFromReader();
cblAudience.DataSource = audience;
cblAudience.DataBind();
DataTable dt = MasterDatas.SelectMasterDataForCourse(1);
ddlLeadInstructor.DataSource = dt;
ddlLeadInstructor.DataBind();
ddlLeadInstructor.Items.Insert(0, Resources.Resource.DropDownPleaseSelect);
DataTable dtCourLength = MasterDatas.SelectMasterDataForCourse(2);
ddlCourseLength.DataSource = dtCourLength;
ddlCourseLength.DataBind();
ddlCourseLength.Items.Insert(0, Resources.Resource.DropDownPleaseSelect);
DataTable dturlName = MasterDatas.SelectMasterDataForCourse(3);
ddlUrlName.DataSource = dturlName;
ddlUrlName.DataBind();
ddlUrlName.Items.Insert(0, Resources.Resource.DropDownPleaseSelect);
cblFilterCategory.DataSource = roles;
cblFilterCategory.DataBind();
ddlFilterforGridSearch.DataSource = roles;
ddlFilterforGridSearch.DataBind();
ddlFilterforGridSearch.Items.Insert(0, Resources.Resource.DropDownAllRoles);
}