I create a form2.vb which have a report viewr and modifier set to public. In reportviewer properties i add the Report1.rdlc Now i want to pass the vlue in the textbox at report1.rdlc i use following steps and code to do it butnot sucessful yet i need ur guidelines first from menu click report ___ report parameter and set the parameter name like conparm. Then i frm2 load event i write following
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Im working with MDI parent/child objects. when closing the child objects i need the child to check to see if it is the last child object before closing. i couldn't find anything on google, maybe im searching for the wrong thing.
View 2 RepliesI am Visual Foxpro Programmer and moved to Vb.Net.
In Foxpro for each control I add to the form, there is a method called Init where this is executed only once when the form run.
I am doing the code for a control in the Form_Load and things working fine.
I am Visual Foxpro Programmer and moved to Vb.Net. In Foxpro for each control I add to the form, there is a method called Init where this is executed only once when the form run.
View 2 Replieswhy is this code not working?
Dim tcplistener As New System.Net.Sockets.TcpListener
This does not compile with the error "Overload resolution failed because no accessible 'New' accepts this number of arguments." The thing is, I have to declare it as New because otherwise I will get a null-reference exception...
The last line in the code below throws the error. Is it because I haven't intialized the size of the byte array?
Public Class Form1
Private toSocket_IPP As Byte()
Public Sub New()
[code].....
Got a question regarding declaring a variable. Basically I have a module that writes to a text file using textwriter which is declared for the whole module to use at the top of the code. But what I want to do is clear the contents of the text file when the program is executed (using file.writealltext). The problem I have is that the file is obviously already in use as a result of the textwriter and the file cannot be modified because of this.
My question is: is there any way of declaring the textWriter object later on (not during the initial initialization of the module) without passing the object between functions? Setting the variable as inactive or something along those lines during initialization would be ideal.
I'm checking If a border's child property is not set to nothing or equal to a given element, but whenever I run the program, it says that it's set to nothing and crashes. Here's my code:
If Not Me.Child.Equals(Nothing) Then ...
If Me.Child.Equals(value) Then ...
Both gives an error. What should I do to pass these lines? Also in C# it would look like this:
if(this.Child != null) ...
if (this.Child != value) ...
But this time it doesn't give an error.
Limited to using v2.0 of .Net framework (we use VB.net) due to environmental constraints on our servers.I've got an ASP.net webpage which pulls data from a webservice that performs checks on user accounts in active directory. Operators can check multiple accounts at one time using the web interface. The webservice returns a list(of AccountCheck) objects which themselves contain single properties like username, email address, and List(of AccountError) objects which contain multiple properties.[code]What I want to do is using some kind of repeater, create multiple panels or divs which contain labels showing the username, email etc, and a gridview which has the accounterror list bound to it to show all the errors. The users could be checking 2, 5, 7 accounts at once, and is dynamic.
View 2 RepliesI occasionally find myself passing this or Me to a child object. Such as this condensed real-world example...
Public Class Entity
Private mValidator as New EntityValidator()
Readonly Property IsValid()[code]....
I'm concerned about .Validate(Me).I get no warnings or Code Analysis violations, but it just feels wrong. I get nervous about infinite recursion and garbage collection.
I have an class named Foo. This class contains a collection of child objects of type FooChildBase, but I also have a further class of type FooChildTwo which inherits from FooChildBase.
Class Foo
Public Children As IList(Of FooChildBase)
End Class
Class FooChildBase
[code]....
What I would like to do is have my FooSpecial Class treat it's Children collection as if they were FooChildSpecial objects, but still be able to add FooChildTwo objects to it. Is this possible and if so how can it be done?
EDIT:I need to FooChildSpecial class to wrap any of the objects in the Children collection with the extra values, whether they are FooChildBase or FooChildTwo?
With the two lists (t1s and t2s), I want to display t1s in a DataGridView, and in one column show the T2 property as a comboBox column, which dropdown will show the t2s list such that a new list instance can be selected. T2 has a Name property that should be used for displaying it in the comboBoxColumn.
I'm able to display the dropdown, but remaining a few problems:
1. How to display the correct comboBox "selection" on "load"?
2. How to change the T2 child object instance when combobox selection is made?
3. This is a really basic problem, which suddenly happened and I just couldn't understand what I have changed; The code marked BLUE now just shows empty cells.. While the AutoGenerated columns do show values.. Shouldn't those "manual" columns work?
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I am trying to write a VB .NET (2008) DLL. When the DLL loads, I would like to perform an initialization task. Trouble is, I don't know how to do this. If I were writing this in C++, I would put the necessary code in DllMain, and all would be well. Is there any similar mechanism to DllMain in VB .NET? Or is there another way to do this?
View 4 RepliesI need to do a dynamically loaded Header and Footer on Master page where there are two placeholders to store the users controls which will become the Headers and Footers. The reason why I am doing it to make it more customizable and it is the how it is required from my supervisor as well.So I have two key-value in web.config such as <add key="MasterHeader" key="~/Controls/Header.ascx"/> <add key=" Master Footer" key="~/Controls/Footer.ascx"/>So I am wondering which Page event should I load these users controls by saying
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Where is the best Page event to put the codes above?Do I need to put something in the page directive to make it work?
I have created a project in VB.net and its working fine in my machine.But when I provide the exe to my senior to test it shows the initialization error.I came to know the reason that the error is because the microsoft .net framework is not updated in my seniors machine....So there can be a possibility that the framework might not be updated on the client's machine as well.... when the user clicks on the exe file it should check that the microsoft framework is present and updated if not then the exe file should first prompt the user that the microsoft framework is needed and should be updated and start the installation....
View 10 RepliesIs there a way to add comments to an array initialization? For example:
Dim test As UShort() = { _
1, _
2, _
3, _
4 _
}
I'd like to add a comment on each line, but the obvious syntaxes fail (for obvious reasons)
1, 'test _
1 'test, _
So, am I out of luck?
i want to create an anonymous class in vb.net exactly like this:
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I am unable to initialize textbox and combobox in my form when i click on the binding navigator 'New' button. Why is it so? But at the same time the datetimepicker does!ere's the code:
Private Sub BindingNavigatorAddNewItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BindingNavigatorAddNewItem.Click
Me.CreatedbyTextBox.Text = Master.user
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When I want to run several programs out of visual studio IDE the program couldn't be run and this message appear for me and say ("Unable to find a version of the runtime to to run this application")I am using visual studio 2005 .net My program is made by basic language.What am i do to fix this error??
View 2 RepliesI am experiencing some trouble with the autogenerated initializecomponent function. Visual Studio insists on initializing a variable like the following, when I drag a usercontrol onto a form:
Dim HierarchyTreeNode1 As NewDelfiLib.HierarchyTreeNode = CType(New System.Windows.Forms.TreeNode(""), ND.HierarchyTreeNode)
I'm new to VB and my question is whether all elements of an array will be initially zero per default:
Dim myArray( nx, ny ) As Single (all elements zero ?)
or do i have to loop over the array and set all elements to zero?
(p.s. my background is in Fortran where the standard does not guarantee that all elements will be zero initially and one has to set all elements to zero explicitly if one desires a zero-initialized array. )
I would like to create list of child objects from list of parent object. Like If i have list of bookingroom which has one member room then i would like to create list of room from it.
eg. code:
Dim BookingRoomList As List(Of BookingRoom) = New List(Of BookingRoom)
Dim RoomList As List(Of Room) = New List(Of Room)
BookingRoomList = BookingRooms.FillGrid()
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Is there any short cut method instead of iterating over for earch?
I'm looking for a list numeric type initalization identifiers for both C# and VB.Net.[code]
View 3 RepliesI am using visual studio 2008 and i can't seem to rectify this error..it seems simple but i really can't seem to rectify this.What iam trying to do is pass the values of an initialized string array to an uninitialized string array using a loop..here's my code:-
Document ^doc = gcnew Document("Abdul.doc");
String ^yes = doc->GetText();
array<Char>^chars = {' '};
array<String^>^splitx = yes->Split(chars);
[code]....
Whats the difference between these two initialization methods for obj? I've seen both of these, but know know if there is an appropriate time to use one vs the other. I found this post which covers C#, but not sure if the same applies to VB.Net.[code]
View 3 Replieson installing a application which was packaged through inno setup on a windows xp machine X84
i am getting error as .net intialization error
what i made was while on try i had uninstalled the .net framework 2.0,3.0 and 3.5 and 4.0 and reinstalled frame work 3.5 and 4.0 + restarted the system and also i have tried to repair the frame work installation
but no good results
I'm wondering if you know if there is a better way to write this code in order to speed it up. It has several blocks of if statements filling arrays, like this:
row0: If x < b(1, 1) Then a1(i, j + 1) = 0
If x > b(1, 1) And x < b(1, 2) Then a1(i, j + 1) = 30
If x > b(1, 2) And x < b(1, 3) Then a1(i, j + 1) = 60
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I have a Parent Class Called Fuselage that containsfour child classes called Forebody, CenterBody, AftBody, and CrossSection. CrossSection classcontains objects common to Forebody, CenterBody, and Aftbody (example: width). How do I access thewidth property in CrossSection from within the classForebody?
Public Class Fuselage
Dim Forebody As ClsSection
Dim Centerbody As ClsSection
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When starting my application, I have a couple of classes which are required to read certain files in order to create a set of default data. The logical place (to me) to do this is in a Shared class constructor; the idea would be to throw a class-level event if the reading of the defaults file fails. Unfortunately, this does not work as attempting to access such an event, in order to attach a handler to it, fires the class constructor before the event has been attached. In a failing case, the constructor starts, fires the fail event, the constructor completes, and then the event handler is attached, after the event has fired.
The only other solution I can think of is to give the class a "typeInitialisedSuccessfully" boolean property and put a try/catch block around every call to construct an instance of the class, which seems unnecessarily kludgey to me. Can someone suggest a more elegant solution?
EDIT: Because this is a fundamental Class, used in one form or another across nearly all of our software tools, I would greatly prefer a solution that will notify future programmers that the type initialiser needs to be called, which is why I initially went towards the Shared Constructor as a solution.
I have developed a windows forms desktop application using vb.net 2005. It is installed on client computers using a setup package.
One of the clients wants to redistribute the setup package to other users.
He wants to provide the users with an initialization file containing the database server name which they will be using, so that it is available when the application is installed. They are apparently incapable of physically typing in a server name themselves after installing the application.
Is there any way I can include a separate file with the setup package which the application can find after it has been installed?