C# 窗体拖拽文件类型判断

       privatevoidForm1_DragEnter(objectsender,DragEventArgse)

        {

           //如果拖进来的是文件类型

           if(e.Data.GetDataPresent(DataFormats.FileDrop))

            {

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

               //得到拖进来的路径

               stringpath = paths[0];

              //路径字符串长度不为空

               if(path.Length > 1)

                {

                   //判断是文件夹吗

                   FileInfofil =newFileInfo(path);

                   if(fil.Attributes ==FileAttributes.Directory)//文件夹

                    {

                       //鼠标图标链接

                        e.Effect =DragDropEffects.Link;

                    }

                   else//文件

                    {

                       //鼠标图标禁止

                        e.Effect =DragDropEffects.None;

                    }

                }

               else

                {

                    e.Effect =DragDropEffects.None;

                }

            }

        }