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Questions tagged nullreferenceexception

16 questions

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33
votes
3
answers

Error checking for NULL in VBScript, getting "Object Required"

vbscript null asp-classic nullreferenceexception
asked 2013-01-24T17:47:47.853
32
votes
2
answers

Impossible NullReferenceException?

c# nullreferenceexception mscorlib
asked 2012-10-25T00:52:36.663
17
votes
3
answers

Can't detect whether Session variable exists

c# asp.net session session-variables nullreferenceexception
asked 2012-10-19T10:08:50.743
9
votes
3
answers

Application.Current is Null for Unit Tests

c# mstest nullreferenceexception applicationdomain
asked 2012-09-27T16:21:49.913
29
votes
7
answers

findViewById returns NULL when using Fragment

android android-activity nullreferenceexception fragment
asked 2012-05-06T08:43:46.087
18
votes
3
answers

Null reference exception when generating a url with UrlHelper.Action method

.net asp.net-mvc-2 nullreferenceexception
asked 2011-12-27T03:46:52.880
324
votes
22
answers

Checking if an object is null in C#

c# null nullreferenceexception
asked 2011-06-20T21:40:36.130
1864
votes
26
answers

What is a NullReferenceException, and how do I fix it?

c# .net vb.net null nullreferenceexception
asked 2011-01-11T16:48:29.143
11
votes
3
answers

Why don't object reference error exceptions in .net tell me which object was null?

debugging .net-4.0 nullreferenceexception
asked 2011-01-07T14:23:55.970
12
votes
1
answers

NLog GetCurrentClassLogger() NullReferenceException using StructureMap (Full Trust)

structuremap asp.net-mvc-3 nullreferenceexception nlog full-trust
asked 2010-12-23T13:43:39.617
12
votes
4
answers

GetAdornerLayer mysteriously returning null

c# wpf nullreferenceexception adorner adornerlayer
asked 2010-06-14T16:41:36.000
26
votes
2
answers

NullReferenceException when doing InsertOnSubmit in LINQ to SQL

c# linq-to-sql nullreferenceexception insertonsubmit
asked 2010-02-04T07:47:13.463
33
votes
2
answers

How to test for an empty generic.dictionary collection?

c# collections generics nullreferenceexception
asked 2010-01-18T20:23:08.520
27
votes
18
answers

Avoiding null reference exceptions

c# .net exception nullreferenceexception
asked 2009-12-22T00:17:05.713
269
votes
8
answers

What does "Object reference not set to an instance of an object" mean?

.net nullreferenceexception
asked 2009-04-22T20:32:38.037
18
votes
4
answers

Sum() causes exception instead of returning 0 when no rows

c# linq-to-sql nullreferenceexception
asked 2009-02-23T09:16:23.923