IDE :: Debugging Nightmare: Cannot Drill Down Into Object Collections In QuickWatch Window?
Mar 15, 2007
My colleague and I have recently upgraded our projects from .NET Framework 1.0 and VS2002 to .NET Framework 2.0 and VS2005. We also applied the latest VS2005 service pack.
Our problem: normally when debugging we use the QuickWatch window to drill down into and view collections of objects belonging to the parent object we are "watching". THIS NO LONGER WORKS...instead, we get a message in the value line against the object collection saying:"In order to evaluate an indexed property, the property must be qualified and the arguments must be explicitly supplied by the user."This is incredibly frustrating, particularly when we have large nested collections of objects.We are pretty sure this feature was working fine after we upgraded, but we are not so sure that it was working after we applied the VS2005 service pack.
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Mar 23, 2010
When viewing a dates Kind property in the watch windows the value "unspecified" will always be return regardless of the actual value.I'm kinda guessing this could be more of a general bug relating to the quick watch window evaluating the shared "Date.Kind" property rather than the specific date instances property.
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Jul 30, 2009
I have an class named Foo. This class contains a collection of child objects of type FooChildBase, but I also have a further class of type FooChildTwo which inherits from FooChildBase.
Class Foo
Public Children As IList(Of FooChildBase)
End Class
Class FooChildBase
[code]....
What I would like to do is have my FooSpecial Class treat it's Children collection as if they were FooChildSpecial objects, but still be able to add FooChildTwo objects to it. Is this possible and if so how can it be done?
EDIT:I need to FooChildSpecial class to wrap any of the objects in the Children collection with the extra values, whether they are FooChildBase or FooChildTwo?
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Mar 14, 2011
As I am stepping through my code, it takes me to Disassembly window. Is there a way to get rid of this. This has only recently started happening.
I have looked in options for a way to get rid of it.
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Jan 20, 2009
is it possible to automaticly hide the vs2008-window while i'm in a debuggersession? When VS comes at a breakpoint or there is an error the vs2008-window must pop-up.
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Oct 7, 2009
I have read many many forums regarding the error message "No symbols have been loaded. The breakpoint will not be hit." I had this error message come up a while ago, so I opened a previous version of my project, and copied the newest version of the code I am working on into that project. Then when I debugged, everything worked fine...for a while. Then I got the error message back, so I did the same thing again, and who would have guessed the error message returned, out of the blue. I am working on the program and it works fine, then suddenly one time when I try to debug with a breakpoint I get that message again. So I did some more research and I found a post that recommended looking at the Modules window while debugging (under debug > windows > modules). And in this window under my project, it said "Cannot find or open the PDB file". However, I compared this to the previous version of the program, that works fine, and I noticed that under Path, for my project, the path that I see is not the path where my project is located. So what I am asking is can someone please tell me how to change that path to the correct path where my files are actually located? I believe that if the path is correct, it will find and load the symbols.
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May 25, 2010
I'm using vb 2010 and need to know how to use the output window while debugging
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Mar 8, 2011
Trying to debug a Windows application, in the Immediate Window, if I type the following:?UBound( I see a tooltip showing the syntax of UBound, but when I complete the statement as ?UBound(CBa) where CBa is the name of an array, I get the response: Name 'UBound' is not declared. Strangely enough, the UBound function is referenced in the code prior to the breakpoint, and works correctly. Why can't I use it in the Immediate Window? I have the same problem with the Len function, it says it's not declared.
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Sep 20, 2010
I have a question specifically about getting the current cookies set to a particular visitor on an ASP.NET webpage. I understand you need to use Request.Cookies - and by default it returns a collection of all cookies set, as an HTTPCookieCollection. However, the MSDN documentation states that you do: Request.Cookies("Username") as an example, in order to fetch an individual cookie and then compare whether it is set, etc. All fine and dandy but why adding parentheses and a string does the type suddenly change to
HTTPCookie.
I understand HTTPCookie is for dealing with individual cookies and HTTPCookieCollection is for dealing with multiple cookies at a time for like iteration purposes, etc., but I don't understand when on the MSDN documentation it explicitly states that the Request.Cookies property (the Cookies property) is of type HTTPCookieCollection, and if you do what I explained it changes the type (I can see this from IntelliSense) and it does not state this happens in the MSDN documentation. I'm not asking about the MSDN documentation lol, but why this happens when adding the parentheses and a string denoting the cookie name. I'm still pretty new to Visual Basic. By the way, I'm doing this all in Visual Web Developer although using VB as the language of choice.
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Jan 3, 2012
given the following class structures:[code]I add the following property to MyList, trying to answer questions like "find out the number of elements with specified type, say Derived1, inside MyList?"[code]
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Feb 24, 2009
is there any collection in vb.net which store object as byref and not byval.
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Aug 3, 2009
I have code that has no output, it doesn't do what i want it to do, but i can't see any errors in it, there are also no errors in the compiler, but in debug mode there are the following errors:[code]
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Jan 6, 2009
I have code that has no output, it doesn't do what i want it to do, but i can't see any errors in it, there are also no errors in the compiler, but in debug mode there are the following errors:
A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll
A first chance exception of type 'System.InvalidOperationException' occurred in
[code].....
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Apr 25, 2009
I have a VB.NET project where I am able to iterate through the keys and values collections of a dictionary object using an index:
MyDictionary.Keys(idx)
MyDictionary.Values(idx)
When this code is taken from the test project and placed into the real project I get the following error:
'System.Collections.Generic.Dictionary(Of Double, String).KeyCollection' cannot be indexed because it has no default property.[code]...
In the line in sub search that says "dtf.Keys(idx) = 0" place your cursor after the right parenthesis and backspace you should get a tooltip that says, "<Extension> ElementAtOrDefault(index as Integer) as Double - index: the zero based element of the index to retrieve.
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May 6, 2010
Say I have a text file I want to load it to a System.Collections.Specialized.StringCollection
object dim a as System.Collections.Specialized.StringCollection
set a = a contains many systems System.Collections.Specialized.StringCollection object.
Each line in text.txt go to an element in a.
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Oct 26, 2011
I have these objects:[code]Using LINQ I need to take a List(Of MakeInfo) and a List(Of ModelInfo) and aggregate the StockInfo from ModelInfo into the List(Of MakeInfo).So for each MakeInfo I will have a total count of all stock where MakeInfo.Name = ModelInfo.Make, and also a minimum price.I think it's going to be something like this, but I'm having trouble accessing the nested object and not sure if it's going to be possible with a single query.[code]
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Dec 28, 2011
Im trying to debug a troublesome Project. I downloaded and installed the Symbols from MS, set my Project to use the Folder where I installed them, etc. When I start Debugging, I can see at the bottom of my IDE window that it is loading Symbols at a rapid clip, until it gets to It stops, and I have tried waiting 15 minutes to no avail.
The file exists - D:Symbols
asapi32.pdb90DF78A27042428D99A8021F064506472
asapi32.pdb - 1.40 MB (1,469,440 bytes) - Created Wednesday, November 24, 2010, 12:25:44 PM
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Sep 8, 2011
I'm trying to go through a DataTable, checking each row against a database to see if it is a duplicate or not, but all my comparisons show they aren't even though some are. I noticed when I look at my datarows, on Items that should be Null the value is {}. If I put that into a SQL Parameter, will that equal Null, or some kind of empty string?
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Nov 9, 2010
I have xml files with nested heirarchies and would like to be able to drill down into (and back up from) each level. In the sample xml below you can see the basic structure (tho most files are more complex). The listbox should first show the top level, SeriesType info only so Series A, Series B will be the only items. If a user double clicks Series A the listbox will contain MyType items: Series A Type 1 and Series A Type 2. Double clicking Series A Type 2 displays the next level: My Technique Name 2. The final drilled down level would, of course, contain the items: Field 1, Field 2, etc.
I already know how to code the mechanics of the drill down. What I would like to know is how to efficiently extract each level's items at the appropriate time. Looping thru the items didn't work (lowest level items from all SeriesTypes were displayed). I suspect a Linq query would solve the problem. Can someone provide me tips on the right approach for doing this?
[Code]...
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Jul 30, 2009
When in the degug mode stepping through code a line at a time, I want to monitor a variable that was created public on another form. It adds the request, but won't shoe me the data. It says I have to ahve an object reference. I don't know what it wants exzactly or how to give it. Here is an example:
I have on form 1 one a variable, Crec. I am in the debugger debugging code in form 2. To access the variable on form one in my code on form 2, I have to use this syntax: form1.crec Now when I put this quickwatch request in, while debugging form 2, it will not let me see the value for form1.Crec It says I need an object reference. Can you tell me I am doing wrong and how to correct it? I'm sure it something simple.
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Sep 21, 2011
I'm having a problem with this code in the highlighted line(*); getting the error in the heading.
Dim htmlarraylist As New List(Of iTextSharp.text.IElement)
htmlarraylist = *HTMLWorker.ParseToList(New StreamReader(tempFile), New StyleSheet())*
[Code].....
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Mar 4, 2008
I have a DateTime field in database and DateTime variable in VB.The VB variable is holding the date as 25/03/2008 11:57but when i save it to DB it changes to 03/25/2008 11:57.What is the solution to this microsoft nightmare.
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Apr 16, 2012
Having a bit of a nightmare with my application. I have developed my application in 1366 x 768. When moving onto other resolutions, the form looks totally wrong. Is there a way to have the application force itself to open up in a box that will fit the screen?(I'm more than happy to pay someone today or tomorrow who could look at making sure that my form gracefully up / down scales). This really is pretty urgent in that respect. If you have the ability to gracefully scale a form up / down and can do so for me either today or tomorrow, let me know of your price. (Possibly a bit naughty to pop this into the forums but I am willing to pay to get this sorted asap).
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Dec 22, 2010
I have a series of API calls that are returning J# data types. I have been able to convert most of the data types (Integer, Boolean, Double, Float, etc) just fine.What I need to do now is convert a java.Util.Collection to a VB .NET collection (ArrayList)
Here is my attempt:
Public Function MakeDotNETCollection(ByVal javaCol As java.util.Collection) As Collection
Dim dotNetCol As Collection
[code]....
I keep getting a runtime error "Unable to cast object of type 'AbstractListlistIterator' to type 'System.Collections.IEnumerator.
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Jun 19, 2010
I want to hide or show Drill down Details section in crystal report while runtime. Maybe a checkbox from a from a form or soemthing like that. How can i do that.
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Nov 7, 2010
I am constructing a collection of objects, and need to use inheritance on a base class - I have been trying for hours in various ways and can't get this to work whatsoever - the error is always "Object reference not set to an instance of an object." The idea in the example below is that an object is instantiated, and within that lies a collection of Students when I try to access the oDemo.Students(0).Name property the error is raised. Otherwise the object appears to have instantiated OK.Here is the code being used to instantiate and access the class (from ASP.NET).
Dim oDemo As New MyDemo.Students
lblTest.Text = oDemo.Student(0).Name
Here is the sample code from the class library:
[code]......
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Oct 13, 2010
I am using Visual Studio 2005 and am writing a SSIS package. In the package I have a VB.Script that looks at a directory on a server and creates a list of the files. I then have a store Proc that looks at a table and gets a list of files that matches the files in the first array. The result is a fullresultset. The next step I need to create a 3rd array that only contains the rows from the first that are not in the second. However, I am getting the following error. Error: The script threw an exception: Unable to cast object of type 'System.Object' to type 'System.Collections.ArrayList'.
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May 5, 2011
I have a parent and child report that I created in visual studio 2010 using winforms in vb.net. I have setup one text box in the parent report to go to the child report with the respective value as the paramter. However, when I click on the link I get the error:a data source instance has not been supplied for the data source 'dataset1'I realize that the dataset1 has to be filled, however I cannot figure out how to fill dataset1. I have researched the topic cand came with the following links:[URL]...
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Jun 9, 2009
anyone know how to fix this? this is what i get when i try to run setup.exe
PLATFORM VERSION INFO
Windows : 5.1.2600.196608 (Win32NT)
Common Language Runtime : 2.0.50727.3053
[code].....
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Feb 5, 2011
[code]...
What's really the point in using the former?It's hard to use linq if I used the former. I have to convert that to an array first which is difficult because there is no (asarray) function.I think I would change all of my code that's using System.
Collections.Specialized.StringCollection to System.Collections.Generic.List(Of String)
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