For historical reasons, we need to expose string constants in .NET through COM interface.We managed to expose ENUM but we can't find a way to expose string const.We try the following code :
[Code]...
Is their a reason why I cant declare a Public Const this way?
HTML
Public Const whatever as string = my.application.settings.xxx.tostring
I don't understand why not.
I am making a program where there is a number of strings are needs and they need to be pre-defined. I rather not store it all in a XML file as I don't want anyone going in and altering them.
Has anyone ever created a class of public constants just to make cleaner code or is it considered bad practice?
In VB (ASP.NET)
Application("myapp")= Server.CreateObject("APP.Engine")
aa = Application("myapp").myMethod(2)
works.
In C# I tried
Application["myapp"]= Server.CreateObject("APP.Engine")
but
Application["myapp"].myMethod(2)
fails with 'object' does not contain a definition for 'myMethod'How can I expose the public interface in C#?
During a code review I looked at set of repository classes (in vb.net). I am used to seeing these repository classes full of functions that return collections (among other things) of your domain objects. However, this repository had 1 public property and 1 private variable that looked something like this:
Private _item as Collection (of Customer)
Public Item as Collection (of Customer)
Get...
Set...
In the "Get", there is code that gets a the Customers from the DAL and loads it in the private _item. What would the benefits be in using a property (customerRepository.Item) instead of plain old function (customerRepository.GetAllCustomers)? The "Property" way looks odd to me but odd doesn't always mean wrong.
How would I go about dynamically declaring a constant? (It's value is dynamic, not the variable name)
View 5 RepliesI want to know how to use DEBUG const in DLL.-> I have a web application in vb.net-> I have a DLL whith some function.Now i have reference this DLL into my web application. And now i want to check in dll whether my application is in DEBUG mode or in Realease mode.Second thing i want to check some validation in constructor based on that constructor will throw exception and i want to show it on page without handling. I have used try catch in constructor and not used in page, so it will give me error in dialog box not in page.
View 11 RepliesVB2008: I would like to set a #Const value in a module and use it throughout my project. Is this possible? It appears that the #Const scope is limited to the function it's in.
View 5 Repliesdruring my search how to display a picture from a webcan using vb I found in some treads the following code:
Const WM_CAP_START = &H400S
Const
WS_CHILD = &H40000000
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I have a class in vb.net, it looks like
public class myclass
Public Const AAA = 111
Public Const BBB = 222
Public Const CCC = 333
End Class
Now i want to get all the values (111,222,333) to an array list (or collection, or whatever) , how to do?
I've made some function that generates an email template. Code it generates is pure HTML with CSS. Problem is compiler does this odd error and highlights each time '#' sign appears which is needed to define colors in CSS. I did try to change '#' to '/pound/' and then string.Replace() on RETURN but no luck. I'm more into C# so there i can escape special characters by using '' before them but something f$#$ed up there... Once i remove '#' all back to normal and compiles well.
View 2 RepliesIs there a way to define a conditional define, i.e. #const, in a asp/vb.net app that it accessible across multiple source files? I want to use, for example, #const useOracle=TRUE but to be able to change it's value in only one place.
View 1 RepliesI can access a module from code behind but not from the aspx page in inline VB code <% ... %>.
View 2 RepliesImports System
Imports System.Threading
Imports System.ComponentModel[code]....
how to declare "smsport" on class smscomms as public so that it can be access in class form1 or button1_click event.
How do declare a public variable .aspx web page that can be used in all the pages within my web application?
View 3 Repliesi want to write a small app which enables the user to burn some files on cd/dvd. Something like:
- Make an export from related DB Tables with informations
- Collect customers informations
- zip everything
-burn on cd (its a settlement related tool)
I want to create a class that inherit from a polygon this is not possible because the polygon is not inheritable. I want to create a class that handle a polygon anyway and it behave like a polygon. Wile with the property i can pass the value from the class to the polygon but if I want to do something like
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i have to develop API in .Net 4.0 which can be used in VB 6.0,i know how to use this and currently i am using my this API in VB successfully.but Stuck at one place,i have collection class and i have to expose it to VB with having functionality of List class of .Net.[code]i know that generic is not supported in VB, but i think with this declaration in VB 6.0 it creates interface class for class B as IList.but in VB using object creation of class B it doesn't provides me members of LIST in intellesense like (Add,Remove of List Class)
View 2 RepliesI have a .NET exe that I wrote and it has a couple properties that I made public and want to expose.
I want to shell this exe (Process.Start()) and then somehow reference this exe and get access to these public properties. These properties expose information about the running exe.
I know how to shell to the exe. And I know how to add a reference to the exe from my project that I want to use this object. But how do I get access to the properties of this running exe?
If you do know the answer maybe you could just tell me what the standard method is to expose properties of a running exe to another application at run-time.
Say I have a class that stores a value, and raises events when that value is changed:
[code]...
also say that I have a container class which contains a number of objects of this style, and raises its own event when any contained object changes its value:
[code]...
Given this setup, what is the best way to expose the stored variables in the StoreEventMonitors class? As three integers As three RaiseEventWhenStoredValueChanges objects?there is a good reason to use three different event-raising Objects, instead of simply writing a new class which stores three integers.
I have a Public Class called "ClientConnection". Inside that class, I have a Public ReadOnly Property called "FileTransfers(ByVal TransferID)". The property returns an object of the class "FileTransfer". All methods in FileTransfer are set to public.
VS is able to discover the methods inside the parent class "ClientConnection". How would I expose the methods inside the sub-class "FileTransfer" that is returned by the property "FileTransfers(ByVal TransferID)"?
Public Class ClientConnection
'irreverent code removed
Public ReadOnly Property FileTransfers(ByVal TransferID As Integer)
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I'm writing a class library in .NET that wraps a COM dll and exposes specific functionality to be consumed by other .NET code. The COM library has several enumerations defined and I've used some of the enum types as parameters like so:
//C#
public void TransactionTypeSetByEnum(COMComponent.TransactionType transType)
{
this.TransactionType = transType
[Code]....
I maintain a WinForms application that uses a third party COM component. We recently upgraded to a new version of the component with some additional properties/features (all old properties are intact), but I could not get Visual Studio to detect the new properties. It acted very much like it was hanging onto a reference to the old version of the component. Here are the steps I took to try to clear it:
Deleted the form that was consuming the component (copied out code first). The only control on this form was the third party component.
Removed the reference to the old component Deleted the bin and obj folders in the solution directory so that the PIA's would get newly created when I added the new control Uninstalled the old component, installed the new one Opened the solution, added the reference to the new component Added a form to the application, dropped the component onto the form and gave it the same name the old control had (so that the rest of the application didn't have to be refactored Pasted the form code back in place At that point the application would compile and run, but I could not get Intellisense to detect the new properties, and if I put them in place anyways the application would not compile. Nothing I tried would get the new properties to show.
Does this mean that the type is not set up correctly?If you're not living on the edge, you're taking up too much room
View 5 RepliesI am attempting to do something which isn't particularly obvious (to me at least). Digging around on the web I located the following sample (notice the font sample appears in the list on the left?).[URL] Now I know how to use the font dialog from VB.Net, but don't know the appropriate property to set to get the example to show in the listbox/listview? I set the same properties as the author but it shows a plain text font. I am basically attempting to save my users from having to click through every font to see what they each look like.
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Creating a usecontrol:
The control will have numberous properties available at design and run time.
I am having trouble creating and exposing FONT properties for the child objects.
Example: The control will have a label with a designtime and useradjustable Display font. I wish to
1) be able to set the Font attributes via the properties dialog at design time.
2) set those properties via GUI at runtime.
The problem...
Code:
Private propArtistHeaderFont() As Font
Public Property ArtistHeaderFont() As Font
Get
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So clearly I can not pass the FONT properties back and forth via the SET/GET method.
I have a base class with several derived classes. I want all of my derived classes to have the same Public Shared (static) method with their own implementation. How do I do this? Is it even possible?
View 3 RepliesI've got a WPF control hosted inside a Windows Forms form via ElementHost. My WPF control (let's just call it WpfControl for the sake of an example) contains a variable that I'd like to expose to my Form.
View 1 RepliesI'm creating a composite user control and trying to exposing the controls as properties so that I can databind them from the form that I drop the user control onto. One of the controls I'm trying to expose is a combobox and I can't seem to figure out how to expose this combobox to the designer. I'm trying the following code that I've cobbled together from what bits of documentation I can find but so far no joy.
<Category("Data"), Bindable(True), _
Browsable(True), EditorBrowsable(EditorBrowsableState.Always), _
DesignerSerializationVisibility(DesignerSerializationVisibility.Visible), _
AttributeProvider(GetType(IListSource))> _
Public Property RollbackCombo As ComboBox
[Code] .....
I am using an inherited form extensively for the first time, and I'd like to know if what I'm doing is correct.I have a base form with a grid and four buttons (Add, Edit, Remove and Close). There is no functionality in any of the button click events, as the specific implementation of each derived form will be different. The only exception perhaps is that the Close button closes the form. The only reason I am using a base form really is because I've many forms that look the same.How do I now expose the button click events to any derived forms? The only straightforward way I could think of was to have the button click events call an Overridable method, which I then override in the derived form:
Public Class frmTableBase
Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
Me.AddButtonClicked()[code]...
Is that the correct way? It seems a little bit overkill to have to do this, although I can't think of another way really... Perhaps I could add the Overridable keyword to the event handlers themselves (and make them public)..?I'm doing it the way I showed now however. It works, but I'd just like to know if this is the generally accepted way of doing this.