Visual Studio 2012 Windows窗体应用程序

Question

I am working on Windows Form application on Visual Studio 2012. I have 2 forms.

Add_Item_to_DB1
Add_Item_to_DB2
Both of these forms call a third form called SUBMIT . Now, based on where this form is being called from, it has to submit information to a different database. Everything else in the SUBMIT form is EXACTLY the same except, data is inserted to a different database.

Is there a way to find out where the form is being called from? Kinda new to Form applications.

Thank you

Answer 1

If you open the SUBMIT form with the ShowDialog() method you will be able to determine the form that opened the SUBMIT form via the Owner property. For example:

public partial class Add_Owner_To_Db_1 : Form
{
    private void button1_Click(object sender, EventArgs e)
    {
        var submitForm = new SUBMIT();

        submitForm.ShowDialog(this);
    }
}

public partial class SUBMIT : Form
{
    private void SUBMIT_Load(object sender, EventArgs e)
    {
        //label1.Text will equal "Add_Owner_To_Db_1"
        label1.Text = this.Owner.Text;
    }
}

Alternatively you can expose a public property on your SUBMIT form that can be populated from the parent form. For example:

public partial class Add_Owner_To_Db_1 : Form
{
    private void button1_Click(object sender, EventArgs e)
    {
        var submitForm = new SUBMIT();

        submitForm.ParentName = "Add_Owner_To_Db_1";

        submitForm.Show();
    }
}

public partial class SUBMIT : Form
{
    public string ParentName { get; set; }

    private void SUBMIT_Load(object sender, EventArgs e)
    {
        //label1.Text will equal "Add_Owner_To_Db_1"
        label1.Text = ParentName;
    }
}

HTH