你可以'除了从创建它们的线程（UI线程）访问控件。

为了做到这一点，你必须使用P / Invoke：

You can''t access controls except from the thread on which they were created (the UI thread).
In order to do it you must use P/Invoke:

Invoke(new MethodInvoker(delegate { DataGridView1.datasource=Connection.runselect(sqlStatment); }));