I am trying to work my way through the NerdDinner tutorial - and as an exercise I'm converting it to VB as I go. I'm not very far in and after having gotten past the C# Yield statement I'm stuck on Shared VB Array Initialisors.
static IDictionary<string, Regex> countryRegex =
new Dictionary<string, Regex>() {
{ "USA", new Regex("^[2-9]\d{2}-\d{3}-\d{4}$")},
[code].....
I seem to be drawing a blank. I'd like to create a "shared" variable that is shared with all instances of a class but not classes that inherit from it. For example.Class A: Shared list As New List(Of String): list.Add("A")
Class B Inherits A: list.Add("B")Class C Inherits B: list.Add("C")The end result I'd like is that any instance of A has just A in the list. Any instance of B has A and B in the list. Any instance of C has A, B, and C in the list. I can accomplish it by creating Instance variables, but I have to construct the list for each instance of a class. I'd like to construct it once for a specific point in the Hierarchy and then share it accross other instances of that class.
Newbie question. I'm writing an ASP.Net MVC app in VB.Net and have been using NerdDinner as a sample (which is in C#). I'm stuck on the validation process specifically the code found in ModelsDinner.cs . I have tried converting it to VB.Net using [URL]...tools/convert/csharp-to-vb/ but it chokes on the Yield statement which found in the GetRuleViolations method (see code below). So my question is how would you do the equivalent in VB.Net?
[Code]...
I want to create business rules that are separated from the DAL code that is generated by my L2S model. Per the NerdDinner example (which is written in C#) this code needs to be in a partial class like mine is below.
<HandleError()> _
Public Class PreOrderController
Inherits System.Web.Mvc.Controller
[code]....
I use this function to convert file to bytes array:
Public Function ConvertToBytes(ByVal path As String) As Byte()
Dim _tempByte() As Byte = Nothing
If String.IsNullOrEmpty(path) = True Then
Throw New ArgumentNullException("File not exist", path )
Return Nothing
End If
[Code]...
I've created a Class Library using vb.net, the thing is that several applications should use this file.
I'm using Inno setup, and I'm declaring the dll file to be shared.
in the client app i've added refrence to the dll and set "Copy Local" to false.
Now if i put the exe file (the client app) in the same folder with the dll everything works correctly, but once I move the exe or use another application that should use the so called shared dll the assembly cannot be loaded because the system cannot find him ("IOFileNotFoundException")
I'm doing some LINQ which requires a custom comparer, so I created a new class implementing IEqualityComparer. However, when I use it, I have to create an instance of it each time.
Dim oldListOnly = oldList.Except(newList, New MyEqualityComparer)
Dim newListOnly = newList.Except(oldList, New MyEqualityComparer)
I may be misunderstanding how .NET works, but it seems wasteful to create a new comparer each time. I really just want one instance (the equivalent of static in C++/C#).So I tried creating a "static" class, which in vb.net is a module. But got an 'Implements' not valid in Modules error.I then tried making the Equals and GetHashCode function shared methods on my class, but got this error: Methods that implement interface members cannot be declared 'Shared'.how to accomplish my goal here?
NetShareAdd API from a VB.NET application (.NET version 2.0) and although I can get the API to just create a basic shared folder I now want to create a shared folder and specify its Share permissions (not NTFS permissions) as well, which means I have to pass in a SHARE_INFO_502 structure rather than just a SHARE_INFO_2 like I was previously doing for creating a basic share. I have spent over 5 hours solid just trying to get this working and am getting to the point now where I really cant think of anything else to try.I've encountered several problems whilst trying to make this work but the one I am finally stuck on is this: When I call NetShareAdd it returns the error INVALID_PARAMETER and the parm_ err object (which is supposed to specify which member of the SHARE_INFO_502 structure caused the error) holds the value 501. I know it is something to do with the security descriptor because if I comment out the line where I set the SHARE_INFO_502 structure's shi502_ security_descriptor field then the code works without an error (just obviously does not set the share permissons I want).I think posting all of the code here might be a bad idea as its currently over 150 lines long (yes that is only code for getting this API working...) so I'll just post my definitions of the SECURITY_DESCRIPTOR structure and the code I am actually using to call the various APIs involved: [code] Each of those API calls prior to NetShareAdd returns a non-error value in the Debug.WriteLine that is done after each one, but there is obviously an issue somewhere with the security descriptor.
View 2 RepliesI want to create an enterprise wide dataset so that my function will call this same dataset from any of the webpage. I've created shared code in the App_Code folder. In it, there's are dataset properties. Will the pages extract info from these dataset properties each time I call the shared program or will create new property for each page.I'm trying to emulate an Enterprise Java Bean type of coding.
View 2 RepliesI like to create an extension method to Image.FromStream Public Shared Function FromStream(ByVal stream As System.IO.Stream) As System.Drawing.Image
With possibility to cancel processing like Public Shared Function FromStream(ByVal stream As System.IO.Stream, ByVal CloseTask As ManualResetEvent) As System.Drawing.Image
I've been looking at using PROPERTIES [URL] but frankly I don't understand it that well. Before I invest the time to read, understand, and truly comprehend this, I want to make sure it's the best way. My intended goal is to create my database connection string in a function/sub somewhere, then assign it to this project wide string variable, then I can use it in any form, project wide without having to recreate it.
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Basically i am creating a vbnet system software. I want to create a shortcut key to lock the system with out affecting the windows explorer (just my system only). Is it possible to create one for that? Or let's say create a procedure that triggers anywhere whether the focus is on a control, on a form (whether shown as normal or modal), or on any other that has the focus on it.
View 1 RepliesI have products form and categories form here i am creating new products and categories both have its own id and also i need to create one sequential no for both depend on current year when i create new [code] also when i create new product i want its sequentialno to be same.1
View 2 RepliesI have created a synchronized queue and am using SyncLock on the SyncRoot property of that queue when I invoke the Enqueue/Dequeue methods. The methods are invoked from instances of standard producer/consumer classes.Is that a proper use of the SyncRoot property?
Would it be better practice to create a private shared object in each class and lock on that instead?
Using: Visual Studio 2005.We are developing three different applications. We currently have 4 different modules that we all share among our applications. When a change is made to one of the modules, we must make changes to the other two modules.If it is possible, how do you (where do you) create a single location for one file to be shared among three different applications? Hopefully this will avoid the unnecessay task of changing a file three times.
View 3 RepliesI didn't write the function for the AutoCompleteExtender so I am not quite sure how to change it without screwing it up, so I figured I would ask here. Recently, it was requested that the AutoComplete show a product name & the date of launch of that specific product. I do not know how to add the date to the AutoComplete.
View 1 RepliesIs it possible to create a folder on a remote machine that has no previously shared folders? I can do this...
vb
Dim fname As String = "\10.1.x.yDocumentsMyFolderName"
IO.Directory.CreateDirectory(fname)
[code].....
I have an interface that i have declared some of the basic internal functions, subs, properties, etc. This interface is then implemented into 3 pre-defined classes. These classes are end-use classes so they dont get derived or inherited elsewhere. I am trying to create a generic shared class that can operate on each of these 3 predefined classes and potentially more as long as they implement the interface.
[Code]...
I have a class like this:
[Code]...
It works, when I make getBar methods public, but I don't want to expose these unneccessarily. Why I can't call private shared methods from a public one in the same class is over my head. I'm using .net framework 4.0 in a web application.
I've taken over the maintenance of the website (ASP.NET VB) and on one particular page I noticed the below code
Inherits System.Web.UI.Page
Public Shared UserNumber As String
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
[Code]....
My question is whether the variable UserNumber can be accessed or changed by any other user than the current one?
Given in the following language specification, for me at least, calling Db.Foobar() [In the following code] does not indeed call off to the Shared Constructors of the base classes. I am curious as to a) is this my own fault for doing something wrong or b) is this an error in the language specification[code]...
View 2 RepliesThis was an experiment to see if I could create a fake array using generics instead of using an array. I decided to try it, because I may use it if I find any advantages to using it over an array. it works, I am just asking for a second or third opinion, have I screwed anything up, or is there an easier way to accomplish this? If I use it, it will be for a 2D game I am creating, and is used to draw the 2D screen graphics, placing an image based on what image identifier is located at what coordinates. The value stored in the fake array is an integer that disignates the graphic to draw and whether it is passible or not, i.e. 0 = a floor image, 501 = a wall image that is impassible (any image number > 500 is impassable) The Class definition:
[Code]...
I am trying to add shared members in derived classes and use that values in base classes...
I have base
class DBLayer
public shared function GetDetail(byval UIN as integer)
dim StrSql = string.format("select * from {0} where uin = {1}", tablename, uin)
end function
end class
[Code]..
currently there is error using the tablename variable of derived class in base class but i want to use it i dun know other techniques if other solutions are better then u can post it or u can say how can i make it work? confused...
I want to create an array of an array (or arraylist of an arraylist) to hold strings.I want to fill an array1 with string values Then add this array to array2. - but only taking up 1 row in array2 e.g something like array2(index)=array1 Then clear array1 then loop through this again with different data, and add it to the array2.so will end up with something like
array2(0)... contains a collection of array1 data
array2(1)... contains a collection of different array1 data
.. and so on
i think i need to make new instances of array1 each loop, but not sure.I dont mind if it uses arrays, or arraylists, or lists, or structure of arrayslists?
Ive tried making my own array, and ive practically completed it, but it doesnt seem to work. The issue seems to be that it cant convert string to type double. but do not know how to fix the error.[code]...
View 11 RepliesI just created a "Usercontrol" in WINFORMS- it just contains 1-Button with some style.And i need to use the same as array(10) and load it to a form.
Ex:Dim myButton() As Button = New ucSpecialButton(dataset4Category(i).Tables(0).Rows.Count - 1) {}
Here my usercontrol name is ucSpecialButton can we create a ONE-Dimensional Array of a WINFORM usercontrol.?
I need help creating a batch of Grand Totals each time enter my value and click Calculate.The code below gives me my Grand Total, now I would like to enter a new set of values and store the previous amount(s) until I'm ready to populate them in a Message Box.
Dim sum As Decimal = 0
For Each total As Decimal In totals
sum += total[code]....
It was so simple in VB6 but I don't know how to approach it in VB2010. I've looked the internet but each site seems to have a different solution and masses of code for something that could be done in a few lines in VB6.Here is the code I want to use. How do I go about creating a control array of 100 picture boxes pic(1) up to pic(100)?
Code:
For y = 0 To 9
For x = 1 To 10
tempObject = (Mid(StrRow(y), x, 1))
[code]....
I need to create an array of decimals by getting input from the user. I know how to create one of random numbers but do not know how to get the input from a user through a text box to a list box.
View 1 RepliesPossible Duplicate:VB.Net Initialising an array on the fly
This maybe a stupid question, but its got me exasperated. How do I declare a new array inline? Is this possible? I've tried all of the following and they all don't work.[code]...