Question

In (Form1) i have a setting button, when i click on it a new form ( Form2 ) is shown, using these lines of code :

private void b7_Click(object sender, EventArgs e)
{
    Form3 frm = new Form3();
    frm.Show();

}

In form3, i have 6 text boxes, and two button, Save and Cancel.

What i’m trying to do is to provide this form to the user so he types the neccessary data into the form, then he click the Save Settings button. In Form1, i want to access to these text boxes to get their current values ( when user clicked save settings ). I tried to add a Form4 and named it ( MiddleForm), i added 6 text boxes to it, and in Form3 (The form in the image above) i wrote these line :

private void button2_Click(object sender, EventArgs e)
{
    MiddleForm mf = new MiddleForm();
    mf.textBox1.Text = keywrd1.Text;
    mf.textBox2.Text = keywrd2.Text;
    mf.textBox3.Text = keywrd3.Text;
    mf.textBox4.Text = keywrd4.Text;
    mf.textBox5.Text = keywrd5.Text;

    mf.textBox1.Text = thelink.Text;

    Close();


}

then i tried to access the values passed to the MiddleForm from Form1 (The form where i need to use the textboxes values), in Form1, i wrote these lines (for debug purposes only)

MiddleForm mf = new MiddleForm();

MessageBox.Show(mf.textBox1.Text); // to see whether there is something 

Unfortunately, it seems that nothing is passed to mf.TextBox1

How can i call the current values (Saved using save settings button) of Form3 From Form1 in order to use them in the rest of code.

Any help please on getting this to work ?

Answer 1

Make public properties in Form3 like this

public string[] Keys
{
    get
    {
        return new string[] { tbKey1.Text, tbKey2.Text, tbKey3.Text,
                              tbKey4.Text, tbKey5.Text};
    }
}

public string Link { get { return tbLink.Text; } }

From Form1 you can access these properties like this

Form3 frm = new Form3();
if (frm.ShowDialog() == DialogResult.OK) {
    string[] keys = frm.Keys; 
    string link = frm.Link; 
}

Note: It is important that you use ShowDialog and not Show, since Show does not wait for the other form to close. Also, when “Save settings” is clicked in Form3, set the dialog result

DialogResult = DialogResult.OK;
Close();

so that you can check it in Form1 as shown above.