Dynamically Set Local XML Namespace?
Sep 1, 2010
I have several xml namespaces that expose the same schema.
I want to use a function that dynamically accepts a namespace and applies the attributes or the properties according to the specified namespace:
Public Sub ProcessElement(element As XElement, [namespace] As XNamespace)
element.<[namespace]:Property>.Remove()
End Sub
I actually want to set the namespace resultion withing this function to the given argument.
Look at this article, he does exactly what I want, but I am sure that in VB.NET XML Literals there is a much nicer way than doing it the hardcoded way.
I know I can simply do it like this:
element.Elements([namespace] + "Property").Remove()
But I was wondering if there is a way to include namespaces in VB.NET amazing .<>, .@, ...<> language shortcuts.
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Jun 8, 2009
I came across a number of new Private Shared variables (of type Hashtables(Of String), initialized in the declaration) added to a partial class for a very large (DataContext-derived) class. This seems sensible to me in one sense because they never change, and making these shared variables ensures that they won't get re-initialized every time a function is called. However, these variables are only used within the scope of one function in the class, and I fear the private namespace of this DataContext-derived class is getting rather polluted, and having these sorts of things exposed at such a high level might be confusing to others reading the code in the future.
Would there be negative performance impact to making these local variables within the function where they are used, or is there some better way to handle this? Basically we are using these 3 hashtables to determine whether anything within particular subsets of properties changed (using GetModifiedMembers and then using the Overlaps function of the hashset to see if any of the modified members correspond to members we care about).
Edit: I caved and took the time to write my own test program, which confirmed that there is a cost to using local variables (which I assume applies generally to all cases -- I doubt there's any case where a shared variable would be slower unless using the shared variable requires some additional logic to do so properly): [Code]
So in this particular case, using the local variable costs about 200%. But in most cases (including my own), the time is probably negligible compared to the overall task. So I guess the question now becomes, how do people generally feel about improving code maintainability at the cost of negligible but known performance impacts?
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Mar 16, 2012
I'm attempting to create a bound WPF control; when I add a local namespace to the UserControl, I get strange output from the compiler. The header of the UserControl follows, with the offending line highlighted.[code]When that line is present, the compiler generates the following in the output:[code]
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Mar 5, 2012
I have 290 Group Policy Backup xml files which I need to enumerate in separate folders.
With each Group Policy backup xml file, I need to query the Policy settings.
Anyone who's looked at a Group Policy xml backup file before would know they're chock-a-block full of Namespace declarations.
I want to know, using Linq to XML, as I query each xml file, how can I dynamically query the XML the Namespace and then append the Namespace into the Linq query for the child nodes/values?[code]...
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Mar 17, 2011
I need to read an xml document from a database record into an XDocument object in order for it to be deserialized. So that the deserialization will work, I need to apply a specific namespace to each of the level 1 elements. So XML looks a bit like this:
[Code]...
How do I prevent the blank/empty namespace being added to each child element of the element to which the required namespace has been applied?
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Jan 29, 2012
Imports System.Windows.Forms
ERROR : 'Namespace' can occur only at file or namespace level
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Apr 10, 2010
The type or namespace name 'Messaging' does not exist in the namespace 'System' (are you missing an assembly reference?)
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Nov 16, 2011
This class is located in the namespace Acme.Infrastructure.Interface.A class with the same name EventArgs exists in the System namespace.In another project in my solution I have a class Acme.BusinessModules.MyModule.MyClass.When attempting to use the EventArgs class I have to fully qualify the class name or the compiler thinks I am using the System.EventArgs class.My understanding of namespace resolution was that the compiler would first look for the class in the current namespace, and then its parents. It seems that the compiler checks in System before it checks in sibling namespaces. Is it correct that System is checked before the sibling? Or is this behaviour caused by other issues (Imports order?)?
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Dec 8, 2011
I am getting this error,here is my code.
Public Class Sample2
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Button1.Click
[Code]....
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Sep 15, 2010
Does anyone know how this can be done? The problem is that when you run the script to add a domain user to the local group as a local user you have no permissions to query the domain. Is there a way to pass a user name and password when doing this? [code]...
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Mar 15, 2011
I have this code.
Code:
Public Class Form1
Dim NPB As Button
Dim x As Integer
[code]....
As you can see, when I open a program from my menu, a new button will be created with text similar to this, "C:Program ". The button it self will not do anything. How can I create the method at the same time the button it is for is created? Also how can I change the text do that it gives me, for example, CCleaner.exe instead of the whole target path?
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Feb 3, 2011
As I say, I've got an application which I'll refer to as "AppName" (note the upper case 'A' and 'N') which, for example, attempts to reference "My.Application.Info.ProductName". Adding a breakpoint and putting a QuickWatch on that call shows the error:
[Code]...
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Dec 5, 2011
I can usually find the answers to most of my questions via the Google Gods, but not this time.I have a form that has a TabPageControl and on that page a collection of labels and text boxes via a usercontrol.
On the form I have a button that allows the user to create a new tabpage, when the code adds a new page, it automatically adds the UserControl collection. I can't get my head around how to access the objects on the newly created tabpage.
What I need to be able todo is take the index of the tabpage that has focus and translate that against the UerContol name, but I havn't a clue how to do it!
[Code]...
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Dec 16, 2011
I am adding a grid of buttons to a form at run-time, and all of then use the same Handler.My question is : Is there any way I canadd the TextBox at run-time ?I know how to but without it on the form, the IDE isn't very happy about the "MyClick" Sub - TextBox1 is not declared......
' some logic here to make nice rows and Columns of buttons
' with different .Text and .Name
Me.Controls.Add(btn)
[code]....
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Jul 16, 2009
I have an application that dynamically creates winforms.
Dim NewS As New Form
Dim NewT as new Timer
NewT.Interval = 5000
[Code].....
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Jul 16, 2009
I have an application that dynamically creates winforms.
Dim NewS As New Form
Dim NewT as new Timer
NewT.Interval = 5000
[code]......
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Apr 25, 2011
I've been developing a Vb.Net app lately, and I'm trying to make it as lightweight as possible (ie make the binaries as small as possible).I've done all the trivial stuff, but while browsing the binary with ILDasm, I noticed that it has a My namespace, with a lot of methods, although I don't use any of these in my program. It seems that there are default Get/Set methods for every form, and other methods.Or, can you show me a use case for the methods bundled by default in the binary? PS: I guess it's not going to make a huge difference in binary size: I'm just asking this out of curiosity; why would the compiler bundle useless methods in every binaries? Perhaps I'll learn that these methods are actually used somewhere under the hood.
PPS: Here's a minimal example:
Module Test
Sub Main()
End Sub
End Module
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Jan 27, 2011
Using VB.net, I have a namespace which I'd like to rename for the future. However, I'd also like to keep the old obsolete namespace for a time to ensure backward-compatibility for our consumers for awhile. Is there a way in .NET to have two namespaces, one ordinary and one that merely is an alternative name for the other?
[Code]...
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Apr 19, 2011
I'm trying to add the Compatibility.VB6 namespace in some of my VB.NET Programs (using 1.1 framework, 2003). It was added in one of my programs because of a migration wizard but i can only use these commands in that particular program. How would I add that to the others?
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Jul 20, 2010
I am trying to work out an example from ".NET Domain Driven Design with C#", which contains a code example where you can see declared some attributes of type DelegateCommand. Now, I've tried googling it up, but I can't find its reference anywhere on MSDN (actually, I found this article, but not DelegateCommand's article itself). Is the DelegateCommand something that's part of WPF or is it just something created in the book?
[Code]...
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Jul 13, 2010
why use of namespace and use keyword and declaration of namespace
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Apr 11, 2009
I'm currently maintaining some old code for a company. As it would happen, the current app I'm modifying uses an older version of the in-house library (we'll call this Lib1.dll). They also have a new version of the library called Lib2.dll that improves upon the previous library in many ways.
Unfortunately, Lib2 is not backward compatible with Lib1. What's worse is that they both use the same namespace Product.Common.
How do I use Lib2 and Lib1 in the same project? Right now if I add references to both of them, VS tells me that certain classes are ambiguous (which makes sense, since they using the same namespace).
Basically, I need something like:
Imports Lib1:Product.Common.Class
I'm using VB.NET 1.1.
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May 7, 2009
What should go into the top level namespace? For example, if I have MyAPI.WebLogic,MyAPI.Compression, etc. If I put classes into the top level namespace, am I violating the principle of encapsulation?
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May 25, 2010
I've googled for creation of namespaces and found some very useful examples, what these examples didn't have is how do I compile and implement my created namespace on my system so I can include it from my various applications.So for example, if I create a namespace to load a config file from my application path and insert it to an array, Do i need to include the namespace on any project I use or is there a way to make it part of my environment?
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Jun 21, 2012
I'm using ASP Classic but I need to use the System.IO.DriveInfo namespace in VB.NET. How to do that?
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Aug 8, 2011
I want to develop the inbuild Query builder in my VB.NET applicaion, so that I've tried to use QUERYLib Namespace. but i don't know how to use it.
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Mar 2, 2012
I'm working on a WCF service in VB. I was asked my DTOs are in différentas namespaces. Here's an example with two classes:
[Code]....
But when I come to do a test project to test my service, no namespace does not appear, and put my two classes are the same. The Intellisence going to my first class with the name Reply, and the second class with the name Reply1, while I wanted the same hierarchy with my classes. So I wonder if it is possible to do? I look forward to your responses.
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Apr 5, 2010
I want to define WebControls from VB code. I add a reference to System.Web.dll and I use VS2005. My code below gives me the errors:ype 'RadioButtonList' is not defined.Type 'UpdatePanel' is not defined.
Imports System.Web
Dim radiobtnlist As RadioButtonList
[code].....
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Jun 21, 2012
I'm using ASP Classic but I need to use the System.IO.DriveInfo namespace in VB.NET. How to do that?
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Nov 5, 2011
Imports System.Windows.Forms.Form which one is namespace and which one is class?
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