protected void btnSearch_Click(object sender, EventArgs e) { try { List <EntityTest> ldtDept = mobjDeptBLL.GetAllTests(txtSearch.Text); if (ldtDept.Count > 0) { dgvDepartment.DataSource = ldtDept; dgvDepartment.DataBind(); Session["DepartmentDetail"] = ldtDept; } } catch (Exception ex) { lblMessage.Text = ex.Message; } }