Asp.net Mvc - Appending Variable To Viewbag Name In For Each Loop?

Nov 1, 2011

I have a mvc 3 vb.net app that I need to generate several viewbags for... I tried the following code to just drop a variable at the end of the viewbag name after each loop but it wont take it.. It says "Object variable or With block variable not set." when it his the viewbag.status(p) line on the second pass it makes through the loop...

Dim p As Integer = 0
For Each registrant In b
Dim _regi As attendance = registrant

[code]....

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Asp.net - Appending String Variable Text After Appending A Line Throws System.OutOfMemoryException?

Sep 28, 2011

I'm appending string variable text after appending a line throws System.OutOfMemoryException?
Can any one explain why it is throwing error.

str+="something Text"
str+="something Text"

and lastly I assign it to a lable text When I assign the value of str it throws exception.....

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Asp.net Mvc 3 - Late Binding Issue With MVC3 ViewBag?

Feb 18, 2011

I'm trying out MVC Scaffolding in a VB.NET MVC3 project and running into an issue with late binding with Option Strict set on (and I want it on).

This works in C#:

public ActionResult Create()
{
ViewBag.PossibleTeams = context.Teams;

[code].....

causes the compiler error Option Strict On disallows late binding. I took a look at the documentation here: [URL] but it wasn't very helpful.

I notice that a new empty application in C# uses the ViewBag in the HomeController but the VB.NET version uses ViewData, so maybe this is a VB.NET limitation.

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Pass Additional Data In A ViewBag To EditorTemplate From Partial?

Mar 1, 2012

I have a partial view[code]...

In this partial view I create new ViewDataDictionary to pass additional data to my editor. In the editor I access ViewBag.Classes and its value is null. However, when I debug I can see that the ViewBag contains "Classes" key. Here a screen dump:

Why is this happening to me and what can I do to pass this value from a partial to editor template?

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DIM A Variable In A Loop - How To Name Each New Variable Differently

Sep 7, 2011

here is some simple code:

0: dim varA = 0
thread.sleep(1000)
GoTo 0

I was wondering how do I name each new variable a different name each time through the loop (i.e. varA1, varA2, varA3)

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Variable-name In A For Loop?

Nov 16, 2009

Im looking for help with trying to vary a variable-name in a for loop:

For b = 1 To Count

' the below image_var(b) varible needs to vary on each iteration'
Dim image_var(b) As New LinkedResource(Server.MapPath(myArray(b-1)))
' need also to have the b in myArray(b-1) bit work through the loop too'
' that is I''m after the array index b minus 1'
image_var(b).ContentId = "imageContentId_" + b.ToString

[Code]...

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For Loop Control Variable?

Jul 15, 2009

What type can i assign a for loop control variable? I want the for loop to be the output file of a calculation, but i can not define it as anything, and i do not know how to write it so that the output is actually what the code spits out once the code has finished running.

[Code]...

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For Loop For A String Variable

Feb 23, 2010

this is my code -

for i as integer = 0 to rows.count - 1
output &= "Name =" & row(i)("Name")
output &= "lastName =" & row(i)("lastName")

[Code]....

is there a way to make a for loop and run applicant 1,2,3,4.... in one shot?

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Loop - .net For Each Private Variable?

May 10, 2012

I'm working in VB.net and I want to create a generic ToString. is there a way to do a "For Each" in "Me".

[Code]...

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VS 2008 Loop With A Variable?

Jul 11, 2009

i have a program that is going to be disabling services depending on what is selected by the user via check boxes, and it would also add to the log if it failed or succeed ( the dim xfailed as integer ). There are a total of 73 options for services and i didn't feel like copy and pasting IF THEN statements for all 73. I was wondering if i could make a loop out of this?

The x would be the service name - ex. "Themes"

Dim x as serviceprocess.servicecontroller = new serviceprocess.servicecontroller(x)
dim xFailed as integer
Try

[code]....

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Accessing A Variable Dimensioned In A For Loop?

Nov 19, 2009

The subject almost sums this up. I have dimensioned a variable 'y' inside a for loop. If i then try and access this outside of the for loop I cannot. What is the reason for this and how can I correct it? Unfortunately I am not able to Dim the variable 'y' outside of the for loop.

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Defining More Than One Variable In A Vb2005 For Loop

May 14, 2009

Is it possible to define two variables in a vb2005 For loop in a similar way that jscript does it?

the javascript example is

for(i=0,l=0;i<20;i++){}

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Dimension Of Variable Inside For Loop

Mar 30, 2010

Using VB.NET .NetFramwork 3.5. This fails and strikes me as odd. Is this correct behavior:
Public Sub TestForEach()
For index As Integer = 1 To 10
Dim z As Integer
Assert.AreEqual(0, z)
z = index
Next
End Sub
I would expect z to always equal 0 as I thought the dim-ing of an integer would set the value to 0. If you run this. It fails at the second loop. For some reason z retains it's value of 1. I know I can manually initialize z to = 0, but I wanted to know if this is a bug or expected behavior.

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Holding Loop Number In A Variable

Jan 12, 2010

I have a button that searches through a binary file to bring up customer information with the following code:

[Code]...

My problem is, I need to create a variable which holds the record number, so that the record can be edited, and put back into the file at its previous location, how would I implement this? Not sure about the code.

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IDE :: Change Value Of Variable In Loop During Runtime?

Jan 26, 2009

I'm multiplying X*Y*Z in a loop of 200 interations Y is declared as a constant. A timer can cause the loop to pause for 10 seconds.

During this 10 sexond pause I would like to change the value of Y. It needs to be changed only for this run, not a permanent change which can be done in the declaration.

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Loop Variable Declaration Efficiency?

Jan 27, 2012

wondering about the relatively efficiency of declaring oop variables in the loops, emselves, or declaring them before first use. Here are some examples:Declare early:

Dim ix As Integer
Dim currentNode As System.Xml.XmlNode
For ix = 1 To 100

[code].....

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Variable Declaration Inside A Loop?

Aug 26, 2011

For i As Integer = 1 To 10
Dim j As Integer = 10
Next

now my question is, Is memory allocated to j every time its executed inside for loop? or only value of 10 is assigned on subsequent iterations?

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Loop Through A Datagrid Column To Add Values To A Variable?

Feb 9, 2010

how to "loop through a datagrid column to add values to a variable

in VB6 it was something like:

do while not .eof
myvariable = myvariable + datagrid1.collumns(6)
loop

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VS 2008 Using Loop Variable As Array Selection?

Oct 10, 2009

Lets say I have declared an array by doing:

dim array()

Also have a variable:

dim loopsize = 10

Then i do this:

for loop = 1 to loopsize
array(loop) = 5
next

What i wanted to do with this is from array(1) through to array(10), the values will be changed to 5. But vb will not allow this and crashes.

Why doesn't this work and how can i make it work?

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.net - Place Server Side Variable In Javascript Loop?

Dec 29, 2011

I have a Server side variable by the following code

Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get
Return mgps.ToString
End Get

[Code]...

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Create A Nested Loop With A Variable Amount Of Nests?

Aug 28, 2009

OK, after trying to get this working for a couple of days now I decided that I would turn to the experts here. I am trying to create a nested loop with a variable amount of nests. Let me elaborate. I have a program that first asks for the minimum and maximum amount of loops, I currently have a SELECT CASE statement that addresses each level of nesting individually.

Dim cMin As Integer = InputBox("Min")
Dim cMax As Integer = InputBox("Max")
Dim c1, c2, c3 As Integer

[Code].....

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Method To Append Results Of For Loop In Variable While Running?

Feb 8, 2012

While a "for loop" is running in VB.net, C# or Python which method can be used to append each result to a variable?

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Place Server Side Variable In Javascript Loop?

Dec 29, 2011

I have a Server side variable by the following code

Dim mgps As New Text.StringBuilder
Public ReadOnly Property GPS() As String
Get[code]..........

and replace the store_locations with GPS but my map become empty.

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Using Timer In Do Until Loop - Putting Single Variable Into Label

Mar 11, 2010

I'm trying to use the timer (not a Timer object) in a Do... Until loop. I want the loop to put a single variable into a label. When I do this it works and puts the value into the label (lblOxygenReading):

If btnGetOxygen.Text = "Get Oxygen Reading" Then
Select Case True
Case rdoColorWhite.Checked
strCurrentColor = "White"
Case rdoColorRed.Checked
[Code] .....

It goes through the Do loop and the For.. next loop but doesn't change the label. Visual Studio doesn't show any errors when I'm writing the code, but when I run it, it hangs somewhere.

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Assign Server Side Loop Variable To Client Array?

Dec 29, 2011

Code of my web page.I made changes according to ur suggestions but title is invisible or not displaying what has missed by me [code]...

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[2008] For Each Loop To Grab A Piece Of Data From A Regex & Variable

Feb 28, 2009

I use a simple for each loop toi grab a piece of data from a regex like:

[Code]...

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Variable Declared Inside A For Loop - Make This To A Compile Time Error?

Mar 27, 2012

Today I investigated a logical bug in our software and figured out that this is related to the way VB.NET thread variables inside a loop.Let's say I have the following code:

Dim numbers As New List(Of Integer) From {1, 2, 3, 4, 5}
For Each number As Integer In numbers
Dim isEven As Boolean

[code]....

The problem is that isEven is declared but not assigned.In this specific case, it would be correct to write dim isEven as Boolean = false but I haven't done this.In VB.NET, a variable that is declared inside a for loop keeps its value for the next itaration. This is by design: [URL]but this is also dangerous pitfall for programmers.

However, until now, I haven't been aware of this problem/behaviour. Until now.Most of our code base is C# anyway, which doesn't allow the use of an uninitialized variable, so there is no problem. But we have some legacy code that is written in VB.NET that we have to support. So the best thing would be to generate a warning or even an error in this specific case.But even with Option Explicit / Option Strict this does not generate a warning / an error.Is there a way make this a compile time error or maybe a way to check this with FxCop?

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Evaluates Loop Condition In Do...Loop Statment To Determine Whether Loop Instructions Should Be Processed

Mar 14, 2011

Makes the following statement about the code below:

**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.

Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?

See below.

Option Explicit On
Option Strict On

Imports System.Globalization

[CODE]...

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.net - Appending To New Line?

Oct 28, 2010

i have the following code which appends a text base file knowen as a .pgp file; all works fine except that everytime i launch this app i append the text in one continual line i need the text to appned to a new line eveytime it is used.Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

[Code]...

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Appending To A Variables Name?

Sep 22, 2011

s1nickelFrontImage is a declared variable, and I have others similar to it, they run up to 10.

how can I append/change the variable 's1nickelFrontImage1' to 's1nickelFrontImage2', and so forth, until LOOP is complete.(always increases by 1)

Do While ac1IMGPtoCCount > 0
ac1ImgPtoCString = ac1ImgPtoCString & s1nickelFrontImage1
ac1IMGPtoCCount = ac1IMGPtoCCount - 1
Loop

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