private void button1_Click(object sender, EventArgs e)
        {
            if (TxtType.Text.Trim().Length <= 0)
            {
                MessageBox.Show("Invalid Subscription Type", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (TxtIssues.Text.Trim().Length <= 0)
            {
                MessageBox.Show("Invalid No. of Subscriptions", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            DataSet ds;

            if (LblPK.Text.Trim().Length > 0)
            {
                ds = db.GetTableData("select * from mas_sub_type where sub_type_id<>" + LblPK.Text.Trim() + " and sub_type_name='" + TxtType.Text.Trim() + "'");
                if (ds.Tables[0].Rows.Count > 0)
                {
                    MessageBox.Show("This Subscription Type already exists", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
            else
            {
                ds = db.GetTableData("select * from mas_sub_type where sub_type_name='" + TxtType.Text.Trim() + "'");
                if (ds.Tables[0].Rows.Count > 0)
                {
                    MessageBox.Show("This Subscription Type already Exists", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }

            string[] res;
            if (LblPK.Text.Trim().Length > 0)
            {
                res = db.ExecuteQueries("Update mas_sub_type set sub_type_name='" + TxtType.Text.Trim() + "', issues=" + TxtIssues.Text.Trim() + ", Remarks='" + TxtRemarks.Text.Trim() + "', modified_by='" + GlobalClass.UserName + "', modified_date=sysdate where sub_type_id=" + LblPK.Text.Trim()).Split(',');
            }
            else
            {
                res = db.ExecuteQueries("Insert into mas_sub_type values (" + db.GetNewID("mas_sub_type", "sub_type_id") + ",'" + TxtType.Text.Trim() + "'," + TxtIssues.Text.Trim() + ",'" + TxtRemarks.Text.Trim() + "','" + GlobalClass.UserName + "',sysdate, null, null, 'I')").Split(',');
            }

            if (res[0].ToString() != "0")
            {
                MessageBox.Show("Insertion / Updation Failure..", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            else
            {
                MessageBox.Show("Successfully Saved", "Hindudharmam Magazine", MessageBoxButtons.OK, MessageBoxIcon.Information);
                TxtIssues.Text  = "";
                TxtRemarks.Text = "";
                TxtType.Text    = "";
                LblPK.Text      = "";
                TxtType.Focus();
            }
        }