private void btnAddCustomers_Click(object sender, EventArgs e)
{
addCustomer = new AddCustomers();
//Passing form name to identify already opened form to keep using of one form,
//reference to object and type of form to switch between Add and Edit form view and behavior
openWindow("AddCustomers", ref addCustomer, "Add");
//Set customer ID to update customer information in the form
addCustomer.setID(-1);
}
private void btnEditCustomers_Click(object sender, EventArgs e)
{
//Customer id in database
int id;
int.TryParse(dgvCustomers.Rows[dgvCustomers.SelectedRows[0].Index].Cells[0].Value.ToString(), out id);
addCustomer = new AddCustomers();
openWindow("AddCustomers", ref addCustomer, "Edit");
addCustomer.setID(id);
}
private void openWindow(string formName, ref AddCustomers form, string type)
{
//If form is not exists in application
if (((Form)Application.OpenForms[formName]) == null)
{
form.MdiParent = (Form)Application.OpenForms["WarehouseSystem"];
if (type == "Add")
{
form.setType("Add");
}
else
{
form.setType("Edit");
}
form.TabCtrl = warehouse.tabControl1;
tp = new TabPage();
//Add a Tabpage and enables it
tp.Parent = warehouse.tabControl1;
tp.Text = form.Text;
tp.Show();
//child Form will now hold a reference value to a tabpage
form.TabPag = tp;
//Activate the newly created Tabpage
warehouse.tabControl1.SelectedTab = tp;
warehouse.tabControl1.Visible = true;
form.Show();
}
//If this form already opened
else
{
form = (AddCustomers)Application.OpenForms[formName];
if (type == "Add")
{
form.setType("Add");
}
else
{
form.setType("Edit");
}
form.Focus();
tp.Text = form.Text;
}
}