// Form load event or a similar place private void Form_Load(object sender, EventArgs e) { // Enable drag and drop for this form // (this can also be applied to any controls) this.AllowDrop = true;         // Add event handlers for the drag & drop functionality this.DragEnter += new DragEventHandler(Form_DragEnter);      this.DragDrop += new DragEventHandler(Form_DragDrop);  }     // This event occurs when the user drags over the form with  // the mouse during a drag drop operation  void Form_DragEnter(object sender, DragEventArgs e) { // Check if the Dataformat of the data can be accepted // (we only accept file drops from Explorer, etc.) if (e.Data.GetDataPresent(DataFormats.FileDrop))          e.Effect = DragDropEffects.Copy; // Okay else          e.Effect = DragDropEffects.None; // Unknown data, ignore it     }     // Occurs when the user releases the mouse over the drop target  void Form_DragDrop(object sender, DragEventArgs e) { // Extract the data from the DataObject-Container into a string list string[] FileList = (string[])e.Data.GetData(DataFormats.FileDrop, false);         // Do something with the data...         // For example add all files into a simple label control: foreach (string File in FileList) this.label.Text += File + "n";  }