Value cannot be null. Parameter name: text_问答_开发者

VS2010 .NET 4 - This simple app works using my local system. When I publish it on an IIS 7 web server, I get this error when the application runs this Linq query with a containes function.

var results = view_UserInfoRepository.View_UserInfo.Where(x => x.Email.Contains(eMail)).OrderBy(x => x.Email);

Server Error in '/' Application.

Value cannot be null. Parameter name: text 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.ArgumentNullException: Value cannot be null. Parameter name: text

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:

[ArgumentNullException: Value cannot be null. Parameter name: text]
System.Data.Linq.SqlClient.SqlHelpers.GetStringContainsPattern(String text, Char escape, Boolean& usedEscapeChar) +595083
System.Data.Linq.SqlClient.Visitor.TranslateStringMethod(SqlMethodCall mc) +797
System.Data.Linq.SqlClient.Visitor.VisitMethodCall(SqlMethodCall mc) +1149 System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +2136 System.Data.Linq.SqlClient.SqlVisitor.VisitExpression(SqlExpression exp) +11
System.Data.Linq.SqlClient.SqlVisitor.VisitSelectCore(SqlSelect select) +48
System.Data.Linq.SqlClient.Visitor.VisitSelect(SqlSelect select) +20
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +1015
System.Data.Linq.SqlClient.SqlVisitor.VisitAlias(SqlAlias a) +16
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +430
System.Data.Linq.SqlClient.SqlVisitor.VisitSource(SqlSource source) +11 System.Data.Linq.SqlClient.SqlVisitor.VisitSelectCore(SqlSelect select) +26
System.Data.Linq.SqlClient.Visitor.VisitSelect(SqlSelect select) +20
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +1015
System.Data.Linq.SqlClient.SqlVisitor.VisitAlias(SqlAlias a) +16
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +430
System.Data.Linq.SqlClient.SqlVisitor.VisitSource(SqlSource source) +11 System.Data.Linq.SqlClient.SqlVisitor.VisitSelectCore(SqlSelect select) +26
System.Data.Linq.SqlClient.Visitor.VisitSelect(SqlSelect select) +20
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +1015
System.Data.Linq.SqlClient.SqlVisitor.VisitAlias(SqlAlias a) +16
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +430
System.Data.Linq.SqlClient.SqlVisitor.VisitSource(SqlSource source) +11 System.Data.Linq.SqlClient.SqlVisitor.VisitSelectCore(SqlSelect select) +26
System.Data.Linq.SqlClient.Visitor.VisitSelect(SqlSelect select) +20
System.Data.Linq.SqlClient.SqlVisitor.Visit(SqlNode node) +1015
System.Data.Linq.SqlClient.SqlProvider.BuildQuery(ResultShape resultShape, Type resultType, SqlNode node, ReadOnlyCollection1 parentParameters, SqlNodeAnnotations annotations) +805
System.Data.Linq.SqlClient.SqlProvider.BuildQuery(Expression query, SqlNodeAnnotations annotations) +155
System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +132
System.Data.Linq.DataQuery1.System.Collections.Generic.IEnumerable.GetEnumerator() +34 System.Collections.Generic.List1..ctor(IEnumerable1 collection) +315 System.Linq.Enumerable.ToList(IEnumerable1 source) +58
TSM.WebUI.Admin.Controllers.UserAdminController.SearchEMail(String eMail, Int32 page) in C:\Users\Jeff\Documents\Visual Studio 2010\Projects\TSM\TSM.WebUI.Admin\Controllers\UserAdminController.cs:180 lambda_method(Closure , ControllerBase , Object[] ) +151
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, 开发者_Go百科IDictionary2 parameters) +199
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary2 parameters) +27
System.Web.Mvc.<>c__DisplayClassd.<InvokeActionMethodWithFilters>b__a() +56 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func1 continuation) +267
System.Web.Mvc.<>c_DisplayClassf.b_c() +20 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList1 filters, ActionDescriptor actionDescriptor, IDictionary2 parameters) +190
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +345
System.Web.Mvc.Controller.ExecuteCore() +115
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +42 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c_DisplayClass8.b_4() +34
System.Web.Mvc.Async.<>c_DisplayClass1.b_0() +21
System.Web.Mvc.Async.<>c__DisplayClass81.<BeginSynchronous>b__7(IAsyncResult _) +12 System.Web.Mvc.Async.WrappedAsyncResult1.End() +55 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +43 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8841105 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

-------------------------------------------------------------------------------- Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

Well, I suspect the problem is that eMail is null. The easiest way to check that is to explicitly set eMail to null before the query on your development box, and see whether that gives the same result. If it does, you need to move on to finding out why it's null in production but not in development.