[Mono-winforms-list] drag and drop file to desktop doesn't work

treedevil brett.raven at solentive.com
Mon Jul 25 02:16:47 EDT 2011


Mono-newbie, so please bear with me!

I have a simple C# winform app (.net 3.5) that populates a listbox with the
files from a folder. The goal is to drag and drop a selected file FROM the
app TO the desktop (or another app), which this does in normal run mode.

When I run it under Mono - I cannot drag nor drop the filename. My code is
as below (simple form with a single list box). It populates the list box
fine, but no dragging available:

    public partial class Form1 : Form
        public Form1()

            string[] filePaths = Directory.GetFiles(@"C:\TEMP\");
            listBox1.DataSource = filePaths;

        private void listBox1_MouseDown(object sender, MouseEventArgs e)

              StringCollection fileList = new StringCollection();
              DataObject dataObj = new DataObject();  
              listBox1.DoDragDrop(dataObj, DragDropEffects.Copy);


        private void listBox1_DragOver(object sender, DragEventArgs e)
            e.Effect = DragDropEffects.Copy;


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