private void button1_Click(object sender, EventArgs e) { ado_project db = new ado_project(); try { string name = textBox3.Text; string code = textBox1.Text; string description = textBox2.Text; Int64 unit_value = Int64.Parse(maskedTextBox1.Text); Int64 current_quntaty = Int64.Parse(maskedTextBox2.Text); Int64 ideal_quntaty = Int64.Parse(maskedTextBox3.Text); Int64 warnning_quntaty = Int64.Parse(maskedTextBox4.Text); db.insert_items(code, name, description, unit_value, current_quntaty, ideal_quntaty, warnning_quntaty); MessageBox.Show("Done"); } catch (Exception) { MessageBox.Show("Try Again"); } textBox3.Text = ""; textBox1.Text = ""; textBox2.Text = ""; maskedTextBox1.Text = ""; maskedTextBox2.Text = ""; maskedTextBox3.Text = ""; maskedTextBox4.Text = ""; Form1 f = new Form1(); f.Refresh(); }