相关疑难解决方法(0)

我使用以下代码拖放单个文件.

 private void FormRegion2_DragEnter_1(object sender, DragEventArgs e)
    {
        if (e.Data.GetDataPresent(DataFormats.FileDrop))
        { e.Effect = DragDropEffects.Copy; }
        //    or this tells us if it is an Outlook attachment drop
        else if (e.Data.GetDataPresent("FileGroupDescriptor"))
        { e.Effect = DragDropEffects.Copy; }
        //    or none of the above
        else
        { e.Effect = DragDropEffects.None; }
    }

  private void FormRegion2_DragDrop_1(object sender, DragEventArgs e)
    {
        string[] fileNames = null;


        if (e.Data.GetDataPresent(DataFormats.FileDrop, false) == true)
        {
            fileNames = (string[])e.Data.GetData(DataFormats.FileDrop);                
            foreach (string fileName in fileNames)
            {
            }
        }
        else if (e.Data.GetDataPresent("FileGroupDescriptor"))
        { …