C＃Winform关闭面板

Question

I have created a custom close image label, added it to a larger label, and added that to my panel. I have a bunch of these panels all over. I created a function to make this label collection which I then adds it to the panel. How do I create an event that closes the panel (Parent of Parent?) when a small close-style label is clicked? Here's what I have so far.

public void MakePanel1(string panel_name)
{
    Panel MyPanel = new Panel();
    Label TitleLabel = AddTitleLabel(panel_name);
    MyPanel.Controls.Add(TitleLabel);
    this.Controls.Add(MyPanel);
}

public Label AddTitleLabel(string title)
{
    Label TitleLabel = new Label();
    TitleLabel.Size = new Size(231, 20);
    TitleLabel.BorderStyle = BorderStyle.FixedSingle;
    TitleLabel.TextAlign = ContentAlignment.MiddleLeft;
    TitleLabel.Text = title;

    Label CloseLabel = new Label();
    CloseLabel.Size = new Size(16, 16);
    CloseLabel.Location = new Point(212, 2);
    CloseLabel.Image = Image.FromFile(@"..\..\pics\x.png");
    CloseLabel.Click += new System.EventHandler(this.DoStuffAndClosePanel);
    TitleLabel.Controls.Add(CloseLabel);

    return TitleLabel;
}

private void DoStuffAndClosePanel(object sender, EventArgs e)
{
    // Do some stuff

    // Close the panel -- sender.Close() ?????
}

thanks in advance

Answer 1

If you really want to do what you described you should know the panel control doesn't have a close method and you can:

private void DoStuffAndClosePanel(object sender, EventArgs e)
{

    //Do Stuff
    //...
    //Close Panel
    var parent=((Control)sender).Parent;
    parent.Visible = false;
    parent.Dispose();
    parent = null;
}

As another option you can use a Form instead of such panel. You can hide title bar of form and use your close button instead.

For example if you want to have such form:

public class PanelForm:Form
{
    protected override void WndProc(ref Message message)
    {
        const int WM_SYSCOMMAND = 0x0112;
        const int SC_MOVE = 0xF010;

        switch (message.Msg)
        {
            case WM_SYSCOMMAND:
                int command = message.WParam.ToInt32() & 0xfff0;
                if (command == SC_MOVE)
                    return;
                break;
        }

        base.WndProc(ref message);
    }
}

And the for showing such panel:

var f= new PanelForm();
f.TopLevel=false;
f.FormBorderStyle= System.Windows.Forms.FormBorderStyle.FixedSingle;
f.MinimizeBox=false;
f.MaximizeBox=false;
this.Controls.Add(f);
f.Show();

Or add it to a TableLayoutPanel , or FlowLayoutPanel

Another option could be using a TabControl and remove unwanted tabs.