“/”应用程序中的服务器错误。

无法将类型为“System.String”的对象转换为类型“PromotionHelper+Channel_json”

说明: 执行当前 Web 请求期间,出现未经处理的异常。请检查堆栈跟踪信息,以了解有关该错误以及代码中导致错误的出处的详细信息。

异常详细信息: System.InvalidOperationException: 无法将类型为“System.String”的对象转换为类型“PromotionHelper+Channel_json”

源错误:


行 28:         if (!string.IsNullOrEmpty(jsonContent))
行 29:         {
行 30:             model = Common.JsonHelper.JsonDivertToObj<Channel>(jsonContent);
行 31:             if (model != null)
行 32:             {

源文件: d:\netdeploy\WEB.free\App_Code\PromotionHelper.cs    行: 30

堆栈跟踪:


[InvalidOperationException: 无法将类型为“System.String”的对象转换为类型“PromotionHelper+Channel_json”]
   System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject) +833
   System.Web.Script.Serialization.ObjectConverter.AssignToPropertyOrField(Object propertyValue, Object o, String memberName, JavaScriptSerializer serializer, Boolean throwOnError) +260
   System.Web.Script.Serialization.ObjectConverter.ConvertDictionaryToObject(IDictionary`2 dictionary, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject) +1162
   System.Web.Script.Serialization.ObjectConverter.ConvertObjectToTypeInternal(Object o, Type type, JavaScriptSerializer serializer, Boolean throwOnError, Object& convertedObject) +91
   System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit) +91
   System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(String input) +57
   Common.JsonHelper.JsonDivertToObj(String json, Int32 MaxJsonLength) in D:\WorkFile(GIT)\qbj.project\qbj.project\Common\JsonHelper.cs:17
   PromotionHelper.Get(Int32 Channelid, String tgkws, String ip, Boolean isCookies) in d:\netdeploy\WEB.free\App_Code\PromotionHelper.cs:30
   _Default.Page_Load(Object sender, EventArgs e) in d:\netdeploy\WEB.free\Default.aspx.cs:29
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.7.3062.0