protected void btnShow_Click(object sender, EventArgs e)
{
DataTable dtBloodGroup = objEmpInfo.GetEmployeeInfo(txtEmpId.Text.Trim(), ddlDistrict.SelectedValue.Trim(), ddlBloodGroup.SelectedValue.Trim(), ddlEmpStatus.SelectedValue.Trim(), ddlEmpType.SelectedValue.Trim(), "", "");
grBloodGroup.DataSource = dtBloodGroup;
grBloodGroup.DataBind();
this.FormatGridView();
}