private void btnedit_Click(object sender, EventArgs e) { db = new db_MiletecDataContext(); if (txtSupplierName.Text != "Supplier Name" && txtAddress.Text != "Address" && txtContact1.Text != "Contact No.1" && txtContact2.Text != "Contact No.2" && txtContactPerson.Text != "Contact Person") { db.sp_Update_SupplierDetails(txtSupplierID.Text, txtSupplierName.Text, txtAddress.Text, int.Parse(txtContact1.Text), int.Parse(txtContact2.Text), txtContactPerson.Text); db.SubmitChanges(); MessageBox.Show("Successfuly Updated.", "NOTE", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); Display(); txtSupplierName.Text = "Supplier Name"; txtAddress.Text = "Address"; txtContact1.Text = "Contact No.1"; txtContact2.Text = "Contact No.2"; txtContactPerson.Text = "Contact Person"; } else { MessageBox.Show("Please fill up everything first.", "NOTE", MessageBoxButtons.OK, MessageBoxIcon.Error); } }