پاسخ : تشخیص سیستم مدیریت محتوا
من یوزر نیم و پسورد ورود به سایت را دارم ولی وقتی دکمه ورود را میزنم این ارور را میده
Server Error in '/' Application.
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Sequence contains no elements
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.InvalidOperationException: Sequence contains no elements
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[InvalidOperationException: Sequence contains no elements]
System.Data.Linq.SqlClient.SqlProvider.Execute(Exp ression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult) +1191
System.Data.Linq.SqlClient.SqlProvider.ExecuteAll( Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries) +118
System.Data.Linq.SqlClient.SqlProvider.System.Data .Linq.Provider.IProvider.Execute(Expression query) +342
System.Data.Linq.DataQuery`1.System.Linq.IQueryPro vider.Execute(Expression expression) +58
System.Linq.Queryable.Single(IQueryable`1 source) +251
.login.Button1_Click(Object sender, EventArgs e) in E:\------------\-----------\------------\--------------\manage\login.aspx.cs:54
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +9752490
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument) +196
System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +10
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler sourceControl, String eventArgument) +13
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +35
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1724
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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18446
