Question

im doing an application where user enter a value inside the text box then he press a button, both in the same user control. Then the result from the text box will show at the label of other user control. Both of the user control is in the same windows form.

Thanks!

Image of user interface

Answer 1

try this:

public class FirstUserControl:UserControl
{
    Public event EventHandler MyEvent;

    //Public property in your first usercontrol
    public string MyText
    {
        get{return this.textbox1.Text;} //textbox1 is the name of your textbox
    }

    private void MyButton_Clicked(/* args */)
    {
        if (MyEvent!=null)
        {
            MyEvent(null, null);
        }
    }
    //other codes
}


public class SecondUserControl:UserControl
{
    //Public property in your first usercontrol
    public string MyText
    {
        set{this.label1.Text = value;} //label1 is the name of your label
    }

    //other codes
}

then in your MainForm:

public class MainForm:Forms
{
    //Add two instance of the UserControls

    public MainForm()
    {
        this.firstUserControl.MyEvent += MainWindow_myevent;
    }

    void MainWindow_myevent(object sender, EventArgs e)
    {
        this.secondUserControl.MyText = this.firstUserControl.MyText;
    }

    //other codes
}