update label from other windows form

Joko Susilo

i make a simple test program that if i press button in the form1, it will change label text in Main Form.
here a code :
In MainForm.cs

void MainShown(object sender, EventArgs e)
        {
            Form1 frm =new Form1();
            frm.ShowDialog();
        }
public string Lbl
{
    get{
         return label1.Text;
    }
    set{
        label1.Text = value;
    }
}

code from Form1.cs :
void Button1Click(object sender, EventArgs e)
{
    Main main = new Main();
    main.Lbl = "UPDATE DONE!!";
    main.label1.Refresh();
    this.Close();
}

I press button1 and never change the text! please help me...

tks.

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs16y ago
One thing that my sample does not do is to allow the second form to cancel (with a cancel button) what it does and for the first form to check to see if the second form was canceled.
Joko Susilo16y ago
thx a lot bro..
let's see how the code working ^__^
Sam Hobbs16y ago
The attached project has a couple of forms. I hope they show the basic idea.
Joko Susilo16y ago
i just want that label in the main form update when there is event in other forms. can u give me a simple sample code?
Sam Hobbs16y ago
You are making a very common beginner's misake. You are creating a new Main form, and that will not work the way you want it to. You need to use the Main form that already exists. I am not sure I understand your requirements so I am not sure what of the details are of what you need.