我想将列表框的元素拖放到资源管理器中。我复制了一个不存在的文件,如本文所述,并对程序代码进行了一些更改:如何使用 filegroupdescriptor 将文件拖动到资源管理器 c#
private void listView1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.None)
return;
byte[] array = Encoding.ASCII.GetBytes("ABCD");
DataObject dataObject = new DataObject();
DragFileInfo filesInfo = new DragFileInfo(@"myFile.txt", array);
MemoryStream infoStream = GetFileDescriptor(filesInfo);
MemoryStream contentStream = GetFileContents(filesInfo);
dataObject.SetData(CFSTR_FILEDESCRIPTORW, infoStream);
dataObject.SetData(CFSTR_FILECONTENTS, contentStream);
dataObject.SetData(CFSTR_PERFORMEDDROPEFFECT, null);
// drag and drop file with name "myFile.txt" and body "ABCD".
DoDragDrop(dataObject, DragDropEffects.All);
}
private MemoryStream GetFileContents(DragFileInfo fileInfo)
{
MemoryStream stream = new MemoryStream();
if (fileInfo.SourceFileBody.Length == 0) fileInfo.SourceFileBody = new Byte[1];
stream.Write(fileInfo.SourceFileBody, 0, fileInfo.SourceFileBody.Length);
return stream;
}
public struct DragFileInfo
{
public string FileName;
public byte[] SourceFileBody;
public DateTime WriteTime;
public Int64 FileSize;
public DragFileInfo(string fileName, byte[] sourceFileBody)
{
FileName = fileName;
SourceFileBody = sourceFileBody;
WriteTime = DateTime.Now;
FileSize = sourceFileBody.Length;
}
}
这工作正常,但我需要同时拖放多个文件。我怎样才能做到这一点?