我在尝试这段代码时遇到了上述错误。我试着给justmycode但没有用。(这是默认的)HereismyXMLfile错误在cmbProduct_SelectedIndexChanged事件中。cmbProduct-->comboboxcmbBrand-->combobox全局DataSetdsUpdate=newDataSet();表单加载dsUpdate.ReadXml(@"...\..\stock.xml");cmbProduct.DataSource=dsUpdate.Tables[0].DefaultView.ToTable(true,"productname");//.Def