Hi, I have the following piece of code:
System.Console.WriteLine("Start")
Dim uri, queryString As String
Dim queryDictionary As New System.Collections.Specialized.NameValueCollection
uri ="http://www.example.com?param1=good¶m2=bad"
queryString = New System.Uri(uri).Query
queryDictionary = System.Web.HttpUtility.ParseQueryString(queryString)
But for some reason I receive such error:
05/24/2023 10:44:00 => [Debug] Debug started for file: test
05/24/2023 10:44:02 => [Info] I01_MachineMaintenance execution started
05/24/2023 10:44:12 => [Error] Try Catch: Object reference not set to an instance of an object.
05/24/2023 10:44:12 => [Error] test: Object reference not set to an instance of an object.
05/24/2023 10:44:12 => [Error] Write Line: Object reference not set to an instance of an object.
05/24/2023 10:44:12 => [Info] I01_MachineMaintenance execution ended in: 00:00:10
05/24/2023 10:44:13 => [Error] System.NullReferenceException: Object reference not set to an instance of an object. at Namespace_5fb8.test_Expressions.test_Expressions_TypedDataContext2_ForReadOnly.__Expr0Get()
at Namespace_5fb8.test_Expressions.test_Expressions_TypedDataContext2_ForReadOnly.ValueType___Expr0Get()
at Namespace_5fb8.test_Expressions.InvokeExpression(Int32 expressionId, IList`1 locations, ActivityContext activityContext)
at System.Activities.Expressions.CompiledExpressionInvoker.InvokeExpression(ActivityContext activityContext)
at Microsoft.VisualBasic.Activities.VisualBasicValue`1.Execute(CodeActivityContext context)
at System.Activities.CodeActivity`1.InternalExecuteInResolutionContext(CodeActivityContext context)
at System.Activities.Runtime.ActivityExecutor.ExecuteInResolutionContext[T](ActivityInstance parentInstance, Activity`1 expressionActivity)
at System.Activities.InArgument`1.TryPopulateValue(LocationEnvironment targetEnvironment, ActivityInstance activityInstance, ActivityExecutor executor)
at System.Activities.RuntimeArgument.TryPopulateValue(LocationEnvironment targetEnvironment, ActivityInstance targetActivityInstance, ActivityExecutor executor, Object argumentValueOverride, Location resultLocation, Boolean skipFastPath)
at System.Activities.ActivityInstance.InternalTryPopulateArgumentValueOrScheduleExpression(RuntimeArgument argument, Int32 nextArgumentIndex, ActivityExecutor executor, IDictionary`2 argumentValueOverrides, Location resultLocation, Boolean isDynamicUpdate)
at System.Activities.ActivityInstance.ResolveArguments(ActivityExecutor executor, IDictionary`2 argumentValueOverrides, Location resultLocation, Int32 startIndex)
at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor executor, BookmarkManager bookmarkManager, Location resultLocation)
When I remove queryDictionary = System.Web.HttpUtility.ParseQueryString(queryString)
then everything works. Weird part is that, as you can see in the output, execution of invoke code is not even started as System.Console.WriteLine("Start")
is not executed.
I added namespace System.Web
and AssemblyReference System.Web
and System.Web.HttpUtility
. I am using 23.4 studio and Windows project. Also attaching the .xaml.
test.xaml (6.9 KB)