您只能从STA线程访问剪贴板。Rick Brewster在Paint.NET中通过对常规Edit-> Paste命令进行一些重构来解决此问题。

码：

IDataObject idat = null;
Exception threadEx = null;
Thread staThread = new Thread(
    delegate ()
    {
        try
        {
            idat = Clipboard.GetDataObject();
        }

        catch (Exception ex) 
        {
            threadEx = ex;            
        }
    });
staThread.SetApartmentState(ApartmentState.STA);
staThread.Start();
staThread.Join();
// at this point either you have clipboard data or an exception

代码来自里克。http://forums.getpaint.net/index.php?/topic/13712-/page__view__findpost__p__226140

更新 ：贾森·海涅取得加入一个好点()后delegate，以固定的暧昧方法错误。