WindowForm에서 File DragAndDrop

 

       private void MainForm_DragDrop(object sender, DragEventArgs e)
        {

            // transfer the filenames to a string array
            // (yes, everything to the left of the "=" can be put in the 
            // foreach loop in place of "files", but this is easier to understand.)
            if (e.Data.GetDataPresent(DataFormats.FileDrop, false) == true)
            {

                string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

                foreach (string item in files)
                {
                    OpenFile(item);

                }
            }
        }





        private void MainForm_DragEnter(object sender, DragEventArgs e)
        {
            // make sure they're actually dropping files (not text or anything else)
            if (e.Data.GetDataPresent(DataFormats.FileDrop, false) == true)
                // allow them to continue
                // (without this, the cursor stays a "NO" symbol
                e.Effect = DragDropEffects.All;
        }