i would like to have a shared function in a separate class file to address the form location . but i dont know how can i get this to work. if i use this below code in my form its working . but i cannot move this to a class file.
Shared Sub Formlocation()
Me.StartPosition = FormStartPosition.Manual
Me.Location = Screen.GetWorkingArea(Me).Location
End Sub
I've made an interface called ApprovalEvent in a separate file with the namespace myproject... I've also made a class called PurchaseOrder... it's also in the same namespace, just in a separate file. Whenever I try to make PurchaseOrder implement ApprovalEvent it always says that ApprovalEvent is undefined...
How can I make the class recognize that the interface exists but is in a different file?[code]...
I can create classes that use generics, however I was wondering if it is possible to apply this to a shared method rather than rely on the caller casting to the correct type.This is the method:
Public Shared Function DeserializeObject(ByVal serializedXml As String, ByVal givenType As System.Type) As Object
Dim serializer As New XmlSerializer(givenType)
Return serializer.Deserialize(New IO.StringReader(serializedXml))
End Function
I'm pretty sure this can't be done, but thought I'd check (if so Extra points will be awarded if someone can technically explain why the compiler can't do this)..
How do i load the Main form of a WPF so that a seperate thread goes and gets data from the database while the form is in an apartmentstate? (drag-able / movable) I Know this is possible with opening a new window from your main form like this :
Private Sub openOrderWindow()
Dim OrderWindow As Orders = New Orders
OrderWindow.ShowDialog()
End Sub
[code]....
I've tried putting MyBase.ShowDialog() and .Show() and .9000+ other things The only benefit I've got out of using a seperate thread to load from the databse is i can see the screen right away (as oppose to it being a transparent box until it loads) but i cannot move it around or minimize it?is there any way to make it Movable while it loads?
Example:
Two files - TestClass.vb, myForm.vb
TestClass.vb looks as follows:
Imports System.Threading
Public Class TestClass
Private myClassThread As New Thread(AddressOf StartMyClassThread)
[code]....
The result:Application runs, no errors or exceptions.Displayed is the listbox and the Start button.I press the start button and a msgbox says "Not Invoked" as expected and upon clicking OK to that msgbox "Start Button Pressed" is added to the Output listbox control.Immediately following that the msgbox pops up again and says "Not Invoked". I was expecting "Invoked" as a separate thread is trying to use the Output listbox control.Of course this results in the Output.Items.Add being attempted which results in no visible result as the thread is not allowed to directly update the UI control.
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...
How to make the File menu drop down on form load ?
I want to make the File Menu to drop down when the form is opened.
[Code]...
i have a function that i have in my data access class now i want to access it then declare and assign parameters and then insert data into database.
I need to be able to access a progressbar in my form from a separate class.
I tried
Dim Prog as Progressbar
Public Property Pg()
Get
[Code].....
I need to be able to access a control from a separate thread and return to the thread again.
Edit: Its just an example I gave prog a value of the object from the form and the invoke required is put in a sub so thats not my problem.
How can I move the following to a separate class for repeated use ? (the problem is that it uses response object)
' Download/View a given file
Protected
Sub downloadFile(ByVal sFile
As String)
[code]....
I have a listbox in separate class like this [code]
[Code]...
How can I use that list box that I have created in that class on this form or I want to show that listbox on my form?
I've been searching for the answer for a while but can't find it yet. Basically so far I have a simple VB.Net form with one button.I would like to make a class or module that can handle events from the main form. This is my code so far but it doesn't seem to work.
View 6 RepliesI have a few forms that have a lot of really intensive updating along with a great deal of user interface (text boxes, button clicking etc) Is it possible to open a separate form as a separate UI thread from the start up form that called it to "show" or open or whatever the new method might be?
View 6 RepliesAfter creating a project in vb.net how to make a separate file so that by clicking on the file the project should directly execute
View 4 RepliesSo I'm playing w/ WCF this week, it's pretty cool... I started with it to try to create a little GUI frontend to a service backend. Anyways I'm just playing with some more advanced things and ordered some books on it, but those are a few days away so I was hoping someone may be able to point me in the right direction for this.
Code:
Imports System.Runtime.Serialization
Namespace LoD.SomeNamespace
[code]......
Can we write all the control events in a seperate class file in different layer rather than in code-behind of web-page ?
View 1 RepliesHow can I call function of the form_Load? I have tried this code but it is not working. [code]
View 13 RepliesI 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.
This is another one of my "I think it's not possible but I need confirmation" questions.I have a base class for a bunch of child classes. Right now, this base class has a few common properties the children use, like Name. The base is an abstract class (MustInherit)Technically, this means that everytime a child class is instantiated, it lugs around, in memory, its own copy of Name. The thing is, Name is going to be a fixed value for all instances of a given child. I.e., Child1.Name will return "child_object1", and Child2.Name will return "child_object2".
View 1 RepliesI want to develop a program using VS 2010 Pro, VB and .NET 4.0 to run on a Windows standalone computer.The program will be loaded by another program that checks for a text file in a directory.When that file exists, the program I want to develop will be started and it will process the text file.The new program will not have any buttons or dialog boxes, it will simply display the progress of the processing of the text file and then it will simply terminate and exit.
I know I can start the processing by putting code in the LOAD event for the form, but i want to make a new class for all the processing to start from and have the new class perform all of the steps necessary to complete the processing of the text file.Of course this new class will use other classes to do all of the different processing steps.How do I execute that new class from the Form LOAD event?
Public Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
OpenFileInArrayList(My.Application.Info.DirectoryPath & "/data/ck.dat", ArrayListCK())
End SUb Public Sub OpenFileInArrayList(ByRef PathFile As String, ByRef ArrayListCC As ArrayList)
Dim stream_reader As New IO.StreamReader(PathFile,System.Text.Encoding.UTF8)
[Code]...
I need to Read a HTML File and retrieve Tag value and attribute value.In HTMLDocument there is no LOAD function to load a html file,but there are methods like getElementByTagName.How to load a html file in htmldocument class?
View 5 RepliesI'm doing a project in computer programing. I need to make a game so I made pong.everything is working fine, except when it loads it is often so low that you cant see the bottom paddle and i have to move the form up.is there a way that i can make the form automatically load already maximized, or load at a certain point in my screen?
View 3 RepliesI have a new solution with 5 projects inside. a data access layer, database, 2 class libraries, and the main form. These are all components that I had worked on to get to this point of combining into 1 solution. Now what I have run into is I can not the actual functions in the class libraries. I can get to the class level, but that is it. ere is a sample line of code I need to get working. Once I get this one line, the rest will be obvious: Temperature is on the main form. get for options is "Equals, GetHashCode, GetType", etc... Before this I had bult, compiled, and referenced these classes separately, and it worked fine. I know this is going to be an easy answer, I'm just not seeing it for some reason.
View 15 Repliesthe forum,this is my first message, and I hope that my English is understandable (I'm Italian)....I've developed a WIndows Service using VB.net 2.0; this service executes a routine every 4 hours... I would like load a dll (without entry point) at run time and when the operation is terminated, I would like unload that. I think that I've to create a new AppDomain and to load my DLL into this, but I don't know the good way to do it.
View 9 RepliesIs there an Equivalent for the following code in VB2008?
VB6:
Load frmAlarm ' Loads the form
frmAlarm.EditAlarm oAlarm ' Loads what was saved on that form
[code]....
I have written a function inside a class file which I added to my project in VB 2010 Express. Unfortunately, when trying to use this function in the main project, it cannot be seen by the compiler. The function is public. You can probably see from this that query that I don't know much about OO programming (I am assuming that the problem stems from something to do with this).
View 10 RepliesI'm trying to make a progressbar that shows the load time of the next form.I've tried alot of different ways to do it, but it and the speed is always the same whether the next form loads faster or slower.I'm not sure what variables to use or anything.
View 3 Repliesload another form and i want a progress bar to work with it.
View 19 RepliesI have created a splash screen and would like it to display for 5 seconds and then display the MainMenu form. The book I am following suggested using
Threading.Thread.Sleep(5000)
but it just makes the splash screen APPEAR after 5 seconds of nothing.