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Forms in C#

Text of video

Method 1:

public partial class FormDays : Form
{
    public string days = "";
    ...
    
private void btnOK_Click(object sender, EventArgs e)
{
   // Set the public string days.
   if (chkDay0.Checked) days += chkDay0.Text + " ";
   if (chkDay1.Checked) days += chkDay1.Text + " ";
   if (chkDay2.Checked) days += chkDay2.Text + " ";
   if (chkDay3.Checked) days += chkDay3.Text + " ";
   if (chkDay4.Checked) days += chkDay4.Text + " ";
   this.Hide();
}

Method 2:

private void btnOK_Click(object sender, EventArgs e)
{
    this.Hide();
}
public string GetDays()
{
    string s = "";
    CheckBox[] chks = { chkDay0, chkDay1, chkDay2, chkDay3, chkDay4 };
    for (int i = 0; i < 5; i++) {
       if (chks[ i].Checked) s += chks[i].Text+" ";
     }
    return s;
}

On form 1 your would have:

private void mnuGetDays_Click(object sender, EventArgs e)
{
    // Create a new instance of FormDays.
    FormDays frm = new FormDays();
    // Display the form modal.
    frm.ShowDialog();
    // This code executes after the user has selected days and pressed OK.
    // The public variable days is computed when the user presses OK on form days.

    // Use either:
    lblDays.Text = frm.days;
    // Or the Second method: The public function GetDays is called.
    lblDays.Text = frm.GetDays();
}

Run the program and click the Get Days menu item.
The instance of FormDays appears.
Check a couple of days, then click OK.
After you click Ok.
The form closes and the names selected appear in the label of form main.

That's all! Congratulations on completing all of the lessons in csharp!