Asp.net - How To Initialize A Combobox In InitNewRow
Jun 29, 2011
I'm Trying to populate an ASPXComboBox using the InitNewRow event for inserting a new row, but I'm having problems binding the data to the ASPXComboBox.
I have used the CellEditorInitialize event for editing the row and it works fine, but the same principal on the InitNewRow event comes up with an 'object not set to an instance of an object' exception. However, the business logic function which is called returns a fully populated DataTable.
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Apr 25, 2011
I have a form with multiple comboboxs. Those combo box are not in array. I need to made them start with the first value. Because i do not like to initialize one by one i try to do with the following code but it is seem not working.
For Each Control In Me.Controls
If TypeOf (Control) Is ComboBox Then
Control.SelectedIndex = 0
End If
i am using visual basic 2010.
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Nov 6, 2009
Sometimes there is a need to initialize the singleton class with some helper values. But we can't "publish" a constructor for it. What is the workaround for this?overloading the GetInstance or setting a color is not my idea. The color should be set only once. I would like to be sure that MyPainter paints ONLY with the initialized color. Any default color should ever be used.
For more clarity I provide a sample:
''' <summary>
''' Singleton class MyPainter
''' </summary>
Public Class MyPainter
[code]....
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Aug 19, 2009
How can i initialize a CBoolProperty? [code]but when i debug. m_bHeight.Value is always true until i set bHeight with false. I want to initialize it to false.
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Nov 1, 2011
Take a look at this code
[CODE]:....................
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Jan 27, 2011
I can create an ArrayList, but, is it possible to create it WITH some elements already?Normally, your arrays are empty, but what if I want to create an array with a few elements already?
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Apr 10, 2006
.Net application failed to initialize
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Aug 11, 2011
The following code:
CodeVariableDeclarationStatement variableDeclaration = new CodeVariableDeclarationStatement(
// Type of the variable to declare.
typeof(string),
// Name of the variable to declare.
"TestString");
Produces the following VB.Net Statement:
Dim TestString As String
What change would I need to make for it to look like this:
Dim TestString As New StringBuilder()
I'm interested in how to get that NEW keyword to appear.
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Nov 1, 2011
working on some partial classes but I ct figure out how to do it.This is my classes:
Partial Public Class Form
Private InfoField() As Info
Private FormgroupField() As FormGroup
[code].....
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Aug 21, 2011
I have created a web application in ASP.NET using VB.NET as code behind file. I am using a COM object of ProvideX.Script class to connect to Sage MAS90 ERP. Everything was working fine in visual studio 2010. Now when I moved to the deployment phase, the problem gets started. I deployed my application in Windows Server 2008 in IIS7. When I run the application I get the following exception.[code]...
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Feb 13, 2012
I define a arrary.
Dim myStr(100) as string.
Then the length of this array is still 0. Then is risky to cross the bound. So how to intialize this array without using a loop?
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Jul 6, 2010
Dim pix() As new List(Of String) = {"*.jpg", "*.avi", "*.mov"}
Dim pix As new List(Of String)() = {"*.jpg", "*.avi", "*.mov"}
Dim pix() As List(Of String) = {"*.jpg", "*.avi", "*.mov"}
Dim pix As List(Of String)() = {"*.jpg", "*.avi", "*.mov"}
Does it matter where the () are?
What difference does New make?
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Oct 6, 2010
is there a shorter way to create an array of 215 boolean 'true's than the following?
Dim ArrayOfBits As Boolean() = {True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True, True,
[code]....
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Jul 28, 2009
I have a program that must initialize a table that is usually about 10-15 thousand records. I have attempted several means to empty the records from it, but it always takes several minutes to accomplish the task or in some cases like a 'bindingsource.clear' command, doesn't work at all. I currently have it working using a simple loop to go through each record at a time and 'removecurrent'. but this seems extremely inefficient and it is quite slow.The real time consumer seems to come in with the tableadapter.update and tableadapter.fill that happens after the loop.[code]
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Aug 2, 2011
I was wondering with Sendkeys, when I try to do sendkeys with a normal letter key on the keyboard with:
Sendkeys.Send("{A}")
Does it send in a char value of the A or the actual keypress?
I have this in a timer:
[Code]...
But when I try to use it, it doesn't seem to be sending "A" and "S" as keypresses. With F9, I go into notepad and it does in fact alternate between the two as I can see "A" and "S" in the text area, but when I can't see whats going on, and I need a keypress of those two keys, it doesn't seem to work.
Sorry if this is an inadequate method for doing it, if you have a better method then sure i'd like to know, but this is just a really quick test.
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Jun 6, 2012
After i upgraded my project, i get this :'UPGRADE_WARNING: Event Text1.TextChanged may fire when form is initialized.And when i run project, it fires and do bad stuff, what can i do?
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Nov 26, 2010
Assuming the array has 216 elements:
Dim Data As Integer() = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
[code].....
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May 14, 2010
Have a look at this code:
Public Class PropertiesTest
Dim num1 As Integer
Dim num2 As Integer
Public Property Assign() As Integer
[Code] .....
Here Assign property is initializing and returning more than one values, but without any use? Since, when I create object of this class , it is returning only one value. So what is the use of allowing such type of initialization and return statement?
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May 2, 2010
I am making a simple home inventoy windows form that uses writing to a text file, reading to a text file, and arrays of structures. The first two I have a good idea how to handle but, the third one is where i have a little trouble. I dont know how to initaializing the data in my structure, how do i initialize the initial position since it has no length? I have initialized them in my module [code]now i need to assign the first value to it, but im not really sure how without anything in it to use my length method
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Sep 7, 2010
I am trying to install my vb.net application on the other system.I have installed the whole vs on this system too but still getting the error "Application failed to initialize properly".I have .net2.0.This appl can be installed on the system where it is developed.
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Jan 18, 2011
In java I use the Desktop application as under;Create JFrame Add JdesktopPane and in the Jframe constructor intilize the all the child forms and then in the events i use child form.visible method.But in the VB where is best technoque to use child forms to initilize?i also need a piece of code for the application to learn how effectively i use the VB to develop MDI application.
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Aug 23, 2011
I was looking on the interweb to see if there were any good examples on how to initialize shared members within a class while still initializing instance variables.[code]How do I initialize both instance and shared members without re-initializing the shared members every time an object is created from a class?
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Sep 15, 2011
In C#, I can declare an array variable like this: object[] Parameters;
And initialize it like this: Parameters = new object[20];
In VB, declaring and initializing an array is easy:
Dim Parameters(19) As Object
Dim Parameters As Object(19) ' Alternative Syntax
How would I initialize an array variable that has already been declared in VB.NET? Parameters = New Object(19) doesn't work.
For example, how would I translate the following to vb.net?
int value = 20;
object[] Parameters;
if (value > 10)
{
Parameters = new Object[20];
}
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Dec 9, 2005
When i try to run my app I get this exception "Configuration system failed to initialize"I recently added a datascource to the app and am assuming that something has gone wrong there but it was all working ok and then this error just started.I assume it's a problem with my appconfig file which i'll post here I cant see anything wrong with it but.!!I've tried deleting the ConnectionString Section but nothing helps and i cant run my app at
[Code]...
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Nov 24, 2009
I have an .NET winforms application(A). I am calling another .NET exe(B) file from the winforms application. When executes, it throws the following error.
I haven't kept any configuration file for the second exe file(B).
"Configuration system failed to initialize"
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Feb 2, 2009
So i've coded a simple vb project in MS VB 2008. I then copied the contents of the 'bin/release' folder, and tried running the program on another machine. I'm getting 'the application failed to initialize' error. I'm assuming this is because i'm missing certain files, dll's or something. Or should I have copied the obj/release folder?
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Jan 17, 2010
I have made some custom .dll's or components and then I downloaded custom webkit component and it didn't work perfectly(I mean that I always get some error code with this error: An error occurred creating the form. See Exception.InnerException for details.The error is: Failed to initialize activation context. When I try to debug the project). And if I have made a new project, and make a component with user control, and I haven't saved it yet, it will work fine, but until I save it then it will give me a designer error.
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Jun 27, 2011
I'm trying to create a group of engineers (a class) at a specific location (also a class) -- my code is bombing with a NullReferenceException at _engineers.Add(e), and I'm not sure why.[code]
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Oct 4, 2011
[URl] The code in question is specifically at line 143. Whenever I try to access a label in the array like so Dicelbls(0).Text I get a null reference error. Obviously I am not declaring the array right?
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Apr 16, 2009
There are several times in my code when I need to determine the width of some text. Under VB6 I would use the .textwidth() method pretty much any time I wished.Under VB.NET it appears that the paint event is the only place I can gain access to an initialized graphics object and from that the measurestring() method.Do I have to use a flag in the paint event when want to auto-resize my splitterbar position or is there another way?
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