我收到一条错误消息“无法将类型为'System.Data.DataViewManagerListItemTypeDescriptor'的对象转换为类型为'System.Data.DataRowView'". [英] I got an error message "Unable to cast object of type 'System.Data.DataViewManagerListItemTypeDescriptor' to type 'System.Data.DataRowView".

问题描述

先生，我在内部for-each循环中收到错误消息.

Sir i got error message in inner for-each loop.

private void buttonSelectAllAvailableStops_Click(object sender, EventArgs e)
          {

              bool found = false;
              foreach (DataRowView drv1 in listBoxAvailableStops.Items)
              {
                  foreach (DataRowView drv2 in listBoxSelectedStops.Items)
                  {
                      if (drv1.Row.ItemArray[0].ToString().Equals(drv2.Row.ItemArray[0].ToString()))
                      {
                          found = true;
                          break;
                      }
                  }
                  if (!found)
                  {
                      DataSet dt = ((System.Data.DataSet)(((System.Windows.Forms.BindingSource)listBoxSelectedStops.DataSource)).DataSource);
                      object[] oldRow = drv1.Row.ItemArray;
                      object[] newRow = new object[3];
                      newRow[0] = oldRow[0];
                      newRow[1] = oldRow[0];
                      newRow[2] = oldRow[1];
                      dt.Tables[0].Rows.Add(newRow);
                      listBoxSelectedStops.DataSource = dt;
                  }
                 found = false;
               }
            
          }

推荐答案

您尝试 ^ ]?

我认为以下链接会有所帮助.发布的代码一定有问题.
http://social.msdn.microsoft.com/论坛/en-US/winformsdatacontrols/thread/ea9a8516-3af7-49d0-9877-6a1ec705531f [ http://www.vbforums.com/showthread.php?t=553638 [ ^ ]

Did you try ^]?

I think following links would help. There must be something wrong out of the posted code.
http://social.msdn.microsoft.com/Forums/en-US/winformsdatacontrols/thread/ea9a8516-3af7-49d0-9877-6a1ec705531f[^]
http://www.vbforums.com/showthread.php?t=553638[^]

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