Dim da As New SqlDataAdapter("select * from tblOfficeEquipmentCategory", sqlconn) cmbCategory.ValueMember = "CAT_NAME"返回指向da.fill的错误(Dt)
引发运行时异常: System.ArgumentNullException值不能为</
属性“”的 ErrorCode=InvalidParameter,Message=The值无效:“值不能为空,参数名:列”,Source=,‘Type=System.ArgumentNullException,Message=Value不能为空。查询:- SET JOB=NULL, SALARY=0
WHERE WORKDEPT = 'E21'
JsonConvert.DeserializeAnonymousType(Page.Request.Params("Items"), New List(Of ItemDto))
反序列化出现问题,字符串"value“不能为空System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.ArgumentNullException