How to clear all initialized (with code) label classes in Winforms?-CodePudding

My code loops through all the files in a folder then makes a label for them. Before it does though, you need to open the folder using FolderBrowserDialog. I want to make it so: When there's a folder ALREADY open in the program, I can clear all of those labels so there's room for the new batch of labels. Code:

foreach(string song in files)
                {
                    

                    Label songLab = new Label();
                    songLab.Padding = new Padding(6);
                    songLab.AutoSize = true;
                    
                    songLab.Location = new Point(prevX   10, prevY   20);
                    songLab.Click  = (o, e2) =>
                    {
                        MessageBox.Show("You Clicked "   songLab.Text);
                    };
                    songLab.MouseEnter  = (o, e3) =>
                    {
                        Cursor = Cursors.Hand;
                        songLab.ForeColor = Color.Red;
                    };
                    
                    songLab.MouseLeave  = (o, e4) =>
                    {
                        Cursor = Cursors.Default;
                        songLab.ForeColor = Color.Black;
                    };
                    
                    Controls.Add(songLab);
                    
                    int fileExtPos = song.LastIndexOf(".");
                    var songFixd = song.Substring(0, fileExtPos);
                    
                    
                    prevY  = 20;
                    songLab.Text  = songFixd   "\n";
                }
    ```

CodePudding user response：

The easiest way is probably to keep a separate list of labels:

myLabels.Add(songLab);
Controls.Add(songLab);

Then you can loop thru it and delete the labels:

foreach(var label in myLabels){
    Controls.Remove(label);
}

However, it sounds like you are doing something like a listview or datagrid. Using these might be better than adding labels manually. You could also consider a fully custom control where you manage all the drawing and event-handling yourself rather than relying on existing controls.

CodePudding user response：

I think you should use groupbox (or a control like that). Add the Labels to the groupbox like this:

groupBox1.Controls.Add(songLab);

And delete from groupbox when deleting in bulk like this:

groupBox1.Controls.Clear();