Evaluate An Attribute On A Method At Runtime?
May 17, 2011I have a Winforms project that is loosely based on MVVM. Security is implemented by the domain layer by using the PrincipalPermissionAttribute, [cod]e...
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Cannot Evaluate Expression Because Code Of Current Method Is Optimized
Oct 15, 2008In debug mode I get into a line that evaluates to false because the expression cannot be evaluated because of "Cannot evaluate expression because the code of the current method is optimized." Program does not assert or error out. If Item.Length then . . . (Here when I hover the mouse it displays "Cannot evaluate expression because the code of the current method is optimized"). What interesting is that it only occurs in one of .vb files.BTW, I'm programming in Compact Framework.
View 4 RepliesChange The TypeConverter Attribute Of A Property At Runtime?
Dec 20, 2011I have a class created for use with the PropertyGrid control in a VB.Net application. One of the properties of the class is:
Private _someProp As String
<Browsable(True), _
BindableAttribute(False), _
[code].....
Access A Method's Parameter From An Associated Attribute?
Mar 19, 2009Given the following classes, how can i intercept Class1.SampleMethod's Value from SampleAttribute?[code]...
View 2 RepliesMethod Not Intended For Code Attribute?
Feb 6, 2012I have a couple of shared methods in my app which are intended to be used with ObjectDataSource's (and other reflection based objects). They handle a lot of automatic parameter checking, filtering, etc. They are, however, all one time use methods (they rebuild everything on every call). It would be much better for someone writing code directly to call the instance methods so that all the filtering, etc, is stored between calls.Is there an attribute I can add to my methods to indicate this? The best would be if it would prevent the method from being called without reflection. Second best would be to issue a warning that the method is being used wrong.[code]
View 1 RepliesVS 2005 - Setting Browsable Attribute Of Property At RunTime
Mar 24, 2009I have done some searching, but am still having trouble trying to set the browsable attribute of property to false at runtime in order to hide in the properties grid control (based on certain conditions).
View 9 RepliesAsp.net - Method For Attaching A Single Key/value Pair Attribute To An Enumeration?
May 4, 2012I'm trying to figure out what the best method is for attaching a single key/value pair attribute to an enumeration where the key is my MerchantId and the value is the corresponding TransactionKey. What I currently do is put a comma delimited string into a StringValueAttribute class:
Public Enum Merchants
<StringValue("coke,faj80785hq+faf=-1=-jfa+">
Coke = 0
<StringValue("pepsi,adfji=-901jnas++fdj98ua")>
Pepsi = 1
<StringValue("drpepper,jk878-=+9kdkdja0=a=f--daj")>
DrPepper = 2
[Code]...
Is this the most efficient way to do this? Instead of StringValueAttribute, what about creating an attribute using a Dictionary(Of String, String) since it is a key/value pair list? Or String Array or List? Maybe something in LINQ?
Know Name Of A Method / Property At Runtime?
Nov 17, 2009I'm writing a debug dump for my app and need to know which Method or Property caused the error along with a trace of the last few routines.
View 3 RepliesReading 'object-attribute-attribute Value' Triples From Column-based CSV Files
Nov 27, 2011here any algorithms/pseudocode for reading/parsing 3-column csv data and determining unique objects/attributes/values?
example data:
john,height,1.75
george,age,21
[Code]....
i have already implemented a solution of my own but it's too slow and i can't find any relevant literature on the internet.
Unrecognized Attribute 'targetFramework Note That Attribute Names Are Case-sensitive?
Nov 10, 2011Possible Duplicate: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive
I am using window xp and iis 5.1 to run the application.
error is occurred Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.
[Code]...
Dynamically Remove Method Calls At Runtime?
Jan 24, 2011What's the best way to dynamically remove method calls at runtime? Essentially what I'd like to do is pass a parameter to my application. Let's call the parameter level. Depending on the value of level, I'd like to essentially remove all the calls that have higher levels. I have the following but was wondering if there were a simpler/cleaner way to remove the calls:
Ideally I'd really like to write something like:
Log5("message")
And just have Log5 work or not call if it doesn't exist. My goal is to actually remove the call. The overhead for calling level 5 logs that test and return is fairly high and I rarely use it.
Module Module1
Delegate Sub Log(ByVal message As String)
Public Log1 As Log = Nothing
Public Log2 As Log = Nothing
[Code].....
Simpler Method Of Drag And Drop Of Buttons In Runtime
Sep 2, 2009i know is there any simpler ways of coding to enable the user to drag and drop button and this button will toggle the background color when the condition is true. So which means to say i need to know where can i place the main program code in the code block.There will also be a provision for the user to delete the button control at runtime.
View 2 Replies'SSLAccessFiltercannot' Be Used As Attribute Because It Does Not Inherit From 'System.Attribute'
Feb 2, 2012I get an error when I try to build my project.'SSLAccessFiltercannot' be used as an attribute because it does not inherit from 'System.Attribute'. [code]
View 1 RepliesRuntime Error '-2147418113 (8000ffff)':Could Not Get The CurLine Property. Unexpected Call To Method Or Property Access
Sep 24, 2009start with I was given a program by a friend that was created in Excel 2003 with the help of Visual Basic Editor. He said he used Visual Basic 2003, which he is not 100% sure about. Anyways he used CurLine in the program and when I try to open it in Excel 2007 and then open the Visual Basic Editor and run the program I get the following error:Run-time error '-2147418113 (8000ffff)':Could not get the CurLine property. Unexpected call to method or property access.
View 2 RepliesStrongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?
Oct 19, 2010Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
Evaluate A Lastname And Then Set A Value
Aug 1, 2010I'm trying to evaluate a lastname and then set a value. so first two characters of last name btw M-MI would be M1, MJ-MZ would be M2
View 1 RepliesEvaluate All The Expressions?
Jan 4, 2010if i do not need to evaluate all the expressions, am i right to say that there are benefits and no disadvantages of using AndAlso compared to using And
example:
if a=b And f=g And y=k
can be better done with:
if a=b AndAlso f=g AndAlso y=k
Evaluate To False In .Net?
Sep 8, 2011I have this code and it evaluates to false instead of a string. All its doing is building a string.
[Code]...
Why Does This Evaluate To True
Jul 26, 2011This is probably a basic question, but I have never used this syntax before. Can someone tell me in detail how this expression evaluates to true? [Assuming IsOdd is a boolean type].
Dim i As Integer = 3
IsOdd = (i And 1) = 1
Office Automation :: Runtime Error "Activesheet.unprotect Stating Unprotect Method Of Worksheet Failed" 1004
Dec 7, 2011I am working on a large spreadsheet with Macros. It worked fine when I only had one spreadsheet that the code was pulling from. When I added an array, I get the an error on the Activesheet.unprotect stating 'unprotect method of worksheet failed'.
View 2 RepliesAsp.net - Unable To Evaluate Expression
Apr 24, 2012I am using a class to check for certain words in my application to prevent SQL Injection. In the class, there is a for loop that tries to match a specific word with the words from a blacklist. If there is a match, I must redirect to the system's error page. However, when a match is found and I try to redirect, I keep getting the error "Unable to evaluate expression."
[Code]....
Evaluate 3 Conditions In An If Statement?
Dec 9, 2011So I am trying to evaluate 3 conditions in an if statement. Its not working how I would assume it should. I basically want to do this:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 And (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
If I write it in that manner it gives inconsistent results. If I workaround by writing it this way it works perfectly:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 Then
If (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
Endif
What is the proper way to do this with only one if statement?
Evaluate Algebraic Expressions In VB NET?
Mar 30, 2011I am looking for a way to simplify algebraic expressions in VB.NET. It is preferred if you can give me a link to a pre-written library or class.
View 1 RepliesGet Functions To Not Evaluate The Return Until The End?
Jan 9, 2012I have functions in my program that stop after it reaches a Return line but I need the function to continue in case what I want the function to return changes. Is there a workaround for this or a way to force the function to continue after a return?
I made a Test Program to demonstrate the problem. It is a Form that contains only a button.
Here is the source code:
[Code]...
The messagebox always says "It returned False" when if it continued going through the code like I want it to it would have returned true.
How To Evaluate An EntityField For A Given String
Aug 24, 2009I have an LLBLGen Pro project which has generated VB.Net 2.0 Self Servicing code.I have a function to return a list of custom structures based on a search using the generated code.I would like to supply a Dictionary of FieldNames and Values to this function and for each one add a new Predicate Expression to the search.How can I check the String within the dictionary that represents the Field name and work out which EntityField to add the Predciate Expression for?
Dim dbFiles As New AllFilesCollection
Dim dbFilter As New PredicateExpression
If Not String.IsNullOrEmpty(ClientName) Then
[code].....
Can't Parse - Unable To Evaluate Expression
Feb 10, 2009I have this line in some
Integer.TryParse(ThisRow.Item("DatumID").ToString, n)
ThisRow is a datarow. The "DatumID" in this case happens to be an empty string, but is not Null. When I break on this line, and try to evaluate it by highlighting it and pressing Shift+F9, I get the message "Unable to evaluate expression". Interestingly, it is actually evaluating correctly (since the item holds an empty string, TryParse returns False).
I have tested this in every way I could think of (mostly I thought I had left out a parenthesis in my expression, but that wasn't true). So why won't that expression evaluate when tested, even though it is actually working correctly?
Evaluate All Occurrences Of A Field Within A List In .NET?
Apr 6, 2011I am new to VB.NET and I keep telling myself there must be a better way to do what I need to do several times a day which is look into a list and see if that one field is set to true anywhere in that list.
So far, I've been using the For Each statement:
[Code]...
But I know some of the other languages can do something like: if ListOfPlayers(*).isActive == true
which just seems more concise and to the point.
Evaluate Conditionals By Hovering In Debug?
Jan 10, 2011I'm reading a tutorial provided by someone at my university, and it claims that if you're debugging a VB.NET program, you can hover over a conditional (e.g. "Age > 13") and it will be evaluated. However, in VB 2010 Express, I am not seeing this functionality.
I believe the tutorial may have been written for a previous version of VB.NET, so I was wondering if anyone could tell me if this used to work and has been removed, or whether it has never existed?!
I am able to hover over a variable and see it's current value, and I can even "Watch" an expression (such as the conditional), but the tutorial claims[code]...
Evaluate Function In VB In Studio 2008?
Feb 27, 2009How can I use the Evaluate function in VB.net in Visual Studio 2008 so that to evaluate a string which consist of 2 variables to be evaluated.[code]...
View 2 RepliesEvaluate To True Or Falst In An If Statement
Jan 8, 2009I am use to coding in php and everything does not need to evaluate to true or falst in an if statement. I have this [code] How would I make that return true or false?
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