reportViewer导出按钮下出导出类别的禁用

//屏蔽保存按钮下的出Excel外的其他导出功能
 foreach (RenderingExtension re in reportViewer1.LocalReport.ListRenderingExtensions())
 {
      //屏蔽掉你需要取消的导出功能 Excel PDF WORD  
      if (!re.Name.Equals("Excel"))//屏蔽掉Excel PDF WORD类似
       {
           FieldInfo fi = re.GetType().GetField("m_isVisible", BindingFlags.Instance | BindingFlags.NonPublic);
           fi.SetValue(re, false);
        }
       else
       {
            FieldInfo fi = re.GetType().GetField("m_isVisible", BindingFlags.Instance | BindingFlags.NonPublic);
            fi.SetValue(re, true);
       }
  }