VB10, Auto-Implemented Properties And COM?
Nov 30, 2010
I recently finished a class that we're using to tie Access to some WCF Services. Of course this means that the .Net classes (and all of their properties) need to be visible to COM. Given that I'm using VB10 and the Contact class has about 20 properties I went ahead and used auto-implementing properties.Much to my surprise, the properties were not accessible from within VBA in Access. I tried marking the properties as ComVisible (which I didn't have to do in the past with standard properties) and it still didn't work. After changing the auto properties to standard properties everything worked.
Became
Public Property FirstName As String
Get
[code].....
View 1 Replies
ADVERTISEMENT
Jun 11, 2009
I'm going to resolve this bug as "Postponed" as we won't have time to do it for VS2010, but I'm definitely interested in your feedback going forward.
View 6 Replies
Apr 29, 2011
I am working on an ASP.NET project where I use VB.NET within Visual Studio 2010. Some of the other developers on the project are using Visual Studio 2008. We all check our code into single SVN repository. I would like to start using Auto-Implemented Properties within VB.NET ...
Property FirstName as String
instead of ...
Private FirstName as String
[code].....
My concern is that this could mess up things for those using VS2008. What would happen if someone using VS2008 needed to modify my class that made use of Auto-Implemented Properties? I am assuming that since everything compiles down to IL code then there would be no issue in binary compatibility. Though a problem would arise when editing source.
View 1 Replies
Nov 10, 2011
I have somehow managed to disable auto-implemented properties in my VS2010 IDE how to turn it back on. Almost every article on the internet loves to explain auto-implemented properties but doesnt give you the crucial option of how to turn it on or off.
View 2 Replies
Dec 20, 2011
I have a class that exposes an auto implemented property Enabled
[Code]...
But If I had not use an auto implemented property and declared my own backing-field as follows this is accessible from the subclass: Private _Enabled as Boolean ---- EDIT ----
The abve line is incorrect - this is not possible, it was in fact Protected in the original code which allowed access from the sub class See @JonSkeet answer ---- EDIT Of course I can just access Enabled from the sub class to work around this but can someone explain why this is the behaviour?
View 2 Replies
Jan 2, 2012
I'm seeing a strange build bug a lot. Sometimes after typing some code we receive the following build error.
Class 'clsX' must implement 'Event PropertyChanged(sender As Object, e As PropertyChangedEventArgs)' for interface System.ComponentModel.INotifyPropertyChanged'.
And
'PropertyChanged' cannot implement 'PropertyChanged' because there is no matching event on interface 'System.ComponentModel.INotifyPropertyChanged'.
Those error should never go together! Usually we can just ignore the exception and build the solution but often enough this bug stops our build. (this happens a lot using Edit and Continue which is annoying)Removing the PropertyChanged event and retyping the same code! sometimes fixes this.We're using a code generator that causes this error to surface but just editing some files manually triggers this exception too. This error occur's on multiple machines using various setups.
View 4 Replies
Jul 27, 2010
Is there a way to use INotifyPropertyChanged with auto-properties? Maybe an attribute or something other, not obvious to me.
public string Demo{
get;set;
}
For me, auto-properties would be an extremely practicall thing, but almost always, I have to raise the PropertyChanged-event if the property value has been changed and without a mechanism to do this, auto-properties are useless for me.
View 4 Replies
Apr 19, 2011
Given the two classes below, can I map the ApplicationSettings to the AppSettings?
Mapper.CreateMap(Of ApplicationSettings, AppSettings)()
Mapper.Map(Of ApplicationSettings, AppSettings)(ApplicationSetting.Load)
Public Class ApplicationSettings
[code].....
View 1 Replies
Jun 9, 2009
in C#: public string Property { get; private set; } in VB?
View 3 Replies
Oct 30, 2010
I have lost the auto hide option (greyed out) on the drop down solution and properties menus. The Toolbox still has the auto hide option. I cannot find the pin to set auto hide on the Solutin and Properties menus.
View 3 Replies
Jun 2, 2010
Anyone got any ideas on how i would go about fading in/out a textbox? Because only forms have opacity properties i was thinking of something like setting the background color to transparent and setting the forecolor of the text to the same as the background color. Then using a timer i could slowly change it to black, etc.
View 7 Replies
Aug 30, 2010
Is the Horizonatal scroll bar an available tool in VB10. If so where is it?
View 5 Replies
Dec 1, 2011
I am writing a program for my intro to programming class. we have to make a bar chart using asterisks to show the bar items. he said we have to use nested loops. that i understand, but i can't figure out how to add the asterisks into the string without causing them to all be on separate lines.
View 3 Replies
Jun 24, 2012
I want to Replace a file with another in vb 10.
1)when Anyone click a button it will open a open directory.then it have to replace the file they choose with mine.
2)i need the code
Dim as new openfiledialog
View 5 Replies
Aug 3, 2010
[Code]...
The garbage collector in .NET moves objects, so the object's address is not stable. How is Object's GetHashCode() method implemented?
View 1 Replies
Nov 27, 2009
I found the line in a program that references UrlNormalizerUtil.UrlNormalizer to validate a url. It calls it from a GeneralPurposeUtilities file which is added to the project properties in references as a .dll file.
My question is: where does this file come from? Is is self coded or from some library? how else can the UrlNormalizer be implemented?
View 9 Replies
Jul 1, 2010
how do i change AxShockwaveFlash1 To ShockwaveFlash1 in vb10
View 1 Replies
Apr 15, 2012
is there a library for the matrix like the library of the complex numbers for example?
View 2 Replies
Apr 16, 2012
I had an assignment that I had done, which has been turned in, I was able to get it to graph, but it when it reaches the right side of the screen it drops off, when it is is adjusted using the velleman controls it jumps back up, hw would I fix this.
Here are the instructon for the assignment:
Write a program tat rads two analog inputs from a velleman board and plots the values on a rotating graph. The number of value plotted horizontally should be specified in a text box. Label the graphs vertical values in at least three places. Print the current voltage reading for each input in it's own lable. The graph should auto scale to fille the graph vertically and horizontally.
The two things that I couldn't get to work is the graph drops off the chart and I was unable to place the vertical values in three places.
Here is my code:
'Date: April 10, 2012
'Progammer: Cathy Hjelm
'Progam: wk8-1
[Code].....
View 3 Replies
Nov 25, 2010
I'm trying to use mockling with VB10(VS2010) to improve my unittesting. I have a C# lamda expression example but I don't know how to implement this in a VB lamda expression? v => v.Load += null The full Moq to raise the load event would be view.Raise(v => v.Load += null, EventArgs.Empty) .Net Developer
View 1 Replies
May 21, 2012
The title basically says it all. What are the main differences between .NET 4.0 and .NET 4.5 and is it worth upgrading to .NET 4.5?Jordan St. Godard |Microsoft® Community Contributor 2011
double twoCents = .02;Console.WriteLine("$" + twoCents.ToString());
View 9 Replies
Dec 6, 2011
I have just opened VB10 for the first time and it converted my VB8 program beautifully, except that all of the screens are not showing any data !
My reference to the MS Access database file is as follows :-
"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:MoneyMoney.mdb"
Do I need to change any of this syntax or is there some other reason why VB10 won't show anything ?
View 19 Replies
May 27, 2011
How can I set the width of a form in inches (or cm) instead of pixels?
I want to print the form, so it needs to always be the same dimensions (4" by 6"). I saw some examples for previous versions of VB, but nothing that works in VB10.
View 3 Replies
Jan 12, 2011
I have an Entity class which Implements IWeightable:
Public Interface IWeightable
Property WeightState As WeightState
End Interface
I have a WeightCalculator class:
Public Class WeightsCalculator
Public Sub New(...)
..
End Sub
Why can I not do wc.Calculate(entities)? I receive:
Unable to cast object of type
'System.Collections.Generic.List1[mynameSpace.Entity]'
to type
'System.Collections.Generic.IList1[myNamespace.IWeightable]'.
If Entity implements IWeightable why is this not possible?
View 2 Replies
Mar 18, 2012
I saw the question posed here: Have I implemented Equals()/GetHashCode() correctly? but my c# is not as strong, and I am unfimiliar with IEquatable enough that I would like to see this in VB.NET if possible please.My example code (The class will eventually use INotifyPropertyChanged when I get there):[code]
View 2 Replies
Apr 9, 2010
I've boxed in red. The class displayed here does implement INotifyPropertyChanged, but the VB compiler seems to think that the PropertyChanged event as declared does not match the signature of INotifyPropertyChanged.PropertyChanged.Here I've selected the offending line of code. Between this and the next screenshot I literally just cut and paste the exact same line back into the file (i.e., I hit Ctrl + X followed by Ctrl + V).I have this happen sometimes, particularly with the INotifyPropertyChanged interface in my experience but I have no idea if the problem is limited to that single interface (which would seem bizarre) or not.Let's say I have some code set up like this. There's an interface with a single event. A class implements that interface. It includes the event. [code] Every now and then, when I build my project, the compiler will suddenly start acting like the above code is broken. It will report that the Person class does not implement INotifyPropertyChanged because it doesn't have a PropertyChanged event; or it will say the PropertyChanged event can't implement INotifyPropertyChanged.PropertyChanged because their signatures don't match.This is weird enough as it is, but here's the weirdest part: if I just cut out the line starting with Event PropertyChanged and then paste it back in, the error goes away. The project builds.
View 2 Replies
Sep 4, 2009
Can someone explain the nuts and bolts of what's really going on under the covers?
View 1 Replies
Feb 10, 2012
i am working on a project in vb10 i want simple code to add delete or update record in ms access by a click of button
View 10 Replies
Mar 8, 2012
I am developing a simple application in VB10 that uses ADO.net to store data in an Access database, and gets input via a serial port RS232. It works well, but is not fully debugged. Unfortunately, a problem has recently started where as soon as i close the program I get a blue screen. Makes it hard to debug. The solution does not even have to have run; it just has to have been loaded and then exit VB10. The blue screen aslo happens to most of the other example solutions that I have downloaded.
Questions:
1)How do you capture the STOP error codes (probably stupid question)?
2) Is there an easy solution that rings a bell? My IT support is trying but not getting anywhere. Have to believe it is hardware related, but the hard drive checks out with testing.
View 2 Replies
Mar 6, 2012
I try to determine the lenght of a string variable, but get the wrong outcome when using: testje = Len(testSTR). When I insert the following line of code: testje = testSTR.Length the answer is still wrong but when I click "Length" I see the correct value. How to get at that value, so I can use it?
View 11 Replies
