Clipboard.GetText返回null（空字符串）

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

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delegate