protected void GvStd_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            TextBox tname = GvStd.Rows[e.RowIndex].Cells[1].Controls[0] as TextBox;
            DataRow dr    = ExamMst.GetDataByKey(Convert.ToInt32(GvStd.DataKeys[e.RowIndex].Value));

            if (dr != null)
            {
                ExamMst std = new ExamMst();
                std.ExamID = Convert.ToInt32(GvStd.DataKeys[e.RowIndex].Value);
                std.Name   = txtstdname.Text;
                std.Total  = txt_TotalMarks.Text != "" ? decimal.Parse(txt_TotalMarks.Text) : 100;

                std.UpdateDataByKey();
                lbl.Text = "Record Updated Successfully";
                Page.ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "fadeLabelOut()", true);
            }

            GvStd.EditIndex = -1;
            BindGridStd();
        }
        protected void btnaddstd_Click(object sender, EventArgs e)
        {
            ExamMst Standard = new ExamMst();

            Standard.Name  = txtstdname.Text;
            Standard.Total = txt_TotalMarks.Text != "" ? decimal.Parse(txt_TotalMarks.Text) : 100;;
            if (txtstdname.Text == "")
            {
                lbl.Text = "Exam name is required.";
                Page.ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "fadeLabelOut()", true);
                return;
            }
            if (ExamID != null)
            {
                Standard.ExamID = int.Parse(ExamID.ToString());
                Standard.UpdateDataByKey();
                lbl.Text = "Exam update Successfully.";
                Page.ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "fadeLabelOut()", true);
                BindGridStd();
                txtstdname.Text = "";
                ExamID          = 0;
            }

            else
            {
                Standard.ExamID = ExamMst.GetNewExamID();
                Standard.Insert();
                lbl.Text = "Standered update Successfully.";
                Page.ClientScript.RegisterStartupScript(this.GetType(), "CallMyFunction", "fadeLabelOut()", true);
                hidStdId = null;
                BindGridStd();
                txtstdname.Text = "";
            }

            btnaddstd.Text = "ADD";
        }