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c#winformsevent-handlingclickdynamic-usercontrols
Karlx Swanovski
Karlx Swanovski

Reputation: 2989

Click event is not firing when I click a control in dynamic usercontrol

I have different controls in my usercontrols. And load usercontrols dynamically in my form

UserControl2 usercontrol = new UserControl2();
usercontrol.Tag = i;
usercontrol.Click += usercontrol_Click;
flowLayoutPanel1.Controls.Add(usercontrol);

private void usercontrol_Click(object sender, EventArgs e)
{
   // handle event
}

The click event is not firing when I click a control in usercontrol. It only fires when I click on empty area of usercontrol.

Upvotes: 6

Views: 14508

Answers (5)

Apollo
Apollo

Reputation: 2070

This should solve your problem.

//Event Handler for dynamic controls
usercontrol.Click += new EventHandler(usercontrol_Click);

Upvotes: 1

JAvAd
JAvAd

Reputation: 134

1-define a delegate at nameapace

public delegate void NavigationClick(int Code, string Title);

2-define a event from your delegate in UserControl class:

        public  event NavigationClick navigationClick;

3-write this code for your control event in UserControl:

private void btn_first_Click(object sender, EventArgs e)
    {
        navigationClick(101, "First");
    }

4-in your Windows Form than use from your UserControl at Event add:

private void dataBaseNavigation1_navigationClick(int Code, string Title)
    {
        MessageBox.Show(Code + " " + Title);
    }

Upvotes: 0

Idle_Mind
Idle_Mind

Reputation: 39132

Recurse through all the controls and wire up the Click() event of each to the same handler. From there call InvokeOnClick(). Now clicking on anything will fire the Click() event of the main UserControl:

public partial class UserControl2 : UserControl
{

    public UserControl2()
    {
        InitializeComponent();
        WireAllControls(this);
    }

    private void WireAllControls(Control cont)
    {
        foreach (Control ctl in cont.Controls)
        {
            ctl.Click += ctl_Click;
            if (ctl.HasChildren)
            {
                WireAllControls(ctl);
            }
        }
    }

    private void ctl_Click(object sender, EventArgs e)
    {
        this.InvokeOnClick(this, EventArgs.Empty); 
    }

}

Upvotes: 18

gzaxx
gzaxx

Reputation: 17600

Because events from ChildControls are not propagated to parents. So you have to handle Click event on every child control added to UserControl.

Upvotes: 0

icbytes
icbytes

Reputation: 1851

Take this:

this.btnApply.Click += new System.EventHandler(this.btnApply_Click);

Upvotes: 0

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