private void btnAddSource_Click(object sender, EventArgs e)
        {
            try
            {
                sourceControl = new SourceControl();
                if (txtSourceName.Text == "")
                {
                    MessageBox.Show("!خطأ لم يتم إدخال اسم المكتب", "خطأ", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                else
                {
                    Boolean check         = false;
                    string  name          = txtSourceName.Text;
                    string  address       = txtSourceAddress.Text;
                    string  EmployeeName1 = txtSourceEmployee1.Text;
                    string  EmployeeName2 = txtSourceEmployee2.Text;
                    setZero();
                    string phone1 = txtSourcePhone1.Text;
                    string phone2 = txtSourcePhone2.Text;
                    string phone3 = txtSourcePhone3.Text;

                    check = sourceControl.insertSource(name, address, EmployeeName1, EmployeeName2, phone1, phone2, phone3);
                    if (check == false)
                    {
                        MessageBox.Show("!لقد تم إضافة هذا المكتب من قبل ", "خطأ", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    else
                    {
                        MessageBox.Show("تمت إضافةالمكتب بنجاح", "تم", MessageBoxButtons.OK, MessageBoxIcon.Information);
                        txtSourceName.Text      = "";
                        txtSourceAddress.Text   = "";
                        txtSourceEmployee1.Text = "";
                        txtSourceEmployee2.Text = "";
                        txtSourcePhone1.Text    = "";
                        txtSourcePhone2.Text    = "";
                        txtSourcePhone3.Text    = "";
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }