[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


Hi,

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()
        {
            InitializeComponent();

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


        private void listBox1_MouseDown(object sender, MouseEventArgs e)
        {

              StringCollection fileList = new StringCollection();
              fileList.Add(listBox1.SelectedItem.ToString());
              DataObject dataObj = new DataObject();  
              dataObj.SetFileDropList(fileList);  
              listBox1.DoDragDrop(dataObj, DragDropEffects.Copy);

        }

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


    }



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