將不存在的多個文件拖放到資源管理器

Question

我想將列表框的元素拖放到資源管理器中。 我做了一個不存在的文件的副本，因爲它是本文中描述和修改一下程序代碼：How to use filegroupdescriptor to drag file to explorer 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; 
    } 
} 

這工作得很好，但我需要拖動，並在同一時間下降幾個文件。我怎樣才能做到這一點？

Answer 1

我有同樣的問題。我發現在那裏解決： http://www.codeproject.com/Articles/23139/Transferring-Virtual-Files-to-Windows-Explorer-in

您需要重寫DataObject類的方法：GetData（）; 例如：

public override object GetData(string format, bool autoConvert) 
    { 
     if (String.Compare(format, CFSTR_FILECONTENTS, StringComparison.OrdinalIgnoreCase) == 0) 
     { 
      base.SetData(CFSTR_FILECONTENTS, GetFileContents(FileIndex++)); 
     } 
     return base.GetData(format, autoConvert); 
    }