Jump To A Next Case Statement?
Jun 20, 2009
I am not sure what to do with the following. The code below reads from a massive list of phrases, checks for a certain conditions and if all succeed a) adds the output to the new_question list b) keeps the value of the variable incremental to "level_0".
If the fourth "if statement" fails, the code changes the value of the variable incremental to "level_1" and jumps to a second case statement. The problem is that for certain input the code fails form the "third if statement" and execution refuses to jump to "level_1" (bacause the fourth "if-statement" must fail as well). I tried moving the "incremental variable" between the third and the fourth "and if" but since the code reads from a list of phrases even if it returns true, execution jumps to level_1 (as some phrases fail from the third "if statement"). I hope I am making sense
[code]...
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Oct 18, 2011
Say I have this in VB.NET:
Dim executeB As Boolean
Select Case myVariable
Case "a"
'some code
Case "b"
'some code
Case Else
End Select
If myVariable is "a", control will go into the first case statement. Now let's say if myVariable = "a", but inside a's case block, I find that executeB is true, is it then possible to jump to the second case?
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Mar 21, 2006
When my form loads it adds some handles (using AddHandler) to a sub (showStatus). What this sub does is checks which control activated the sub (using sender.Equals) and displays text in the status label (status) accordingly.For this I use an If...Then statement for each possibility. There are many possibilities and my code get cluttered. Is there a way to do the same thing with a Select...Case statement. I tried: Select Case sender Case tbOne : status.Text = "blahblahblahblahblahblah" End Selectwhere: tbOne is a textbox, status is a StatusLabelIt gives me an error though, saying "Operator '=' is not defined for types 'Object' and 'System.Windows.Forms.TextBox'."Any ideas on how I can get this to work with a select case statement?
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Oct 31, 2011
I have coded a case statement that changes the background colour of a panel. [code]When the code is run, it works for the case of colour1 that is NOT 1 or 2. However, when the colour1 is 1 or 2, it is supposed to pick a number from set array and run another case statement. Instead, it only picks the last value (for 1, this is 5, and for 2, this is 7).
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Oct 28, 2009
i have a program using a select case to convert letters to special charaters. My question is how can I get the code to read upper and lower case letters without having to put the upper case letters in my select case statement. Example: Part of my code is
[Code]...
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Feb 17, 2010
Does anyone know the keyboard shortcut to jump from the start of a For / For Each (or If, While, etc.) block to the end of it in visual studio if you're using vb.net? I found the following which I thought would work but doesn't : Go to Matching Brace in Visual Studio?
Following the comment there I checked Tools/Options/Environment/Keyboard for the Edit.GotoBrace command which is mapped to Ctrl + å in Swedish.Vb.net doesn't use braces per se, but in the following example:
For Each Foo in Bar
Do lots of stuff
Next
I would have thought that the same command should jump me from the For Each to the "Next" but it doesn't do anything. Is there another command (or should that command work but something is broken locally?)
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Jun 23, 2010
A co-worker wants to convert the following IfThenElseIf statement into a Select Case statement.
Explain why this is not possible.
If temperature = 100 Then
X = 0
ElseIf population > 1000 Then
X = 1
ElseIf rate < .1 Then
X = -1
End If
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Jun 19, 2012
It looks like impossible but...
Try
Select Case command
Case 1
smth()
Case 2
[code]....
Firstly Case 2 runs. Throws exception. And right after this debugger shows that next processed statement is Case Else. Only after Case Else throws own exception Catch block start working. I've never seen this trick. Why can this happened?I'm sure the block is entered once (not like this:first enter hit Case 2 and second hit Case Else).
Update:-To Matt Wilko. Thank you for answering. I've switch to Strict On in Options of VS2010 but nothing has changed. Command is variable, not function. Watch tool shows that on each step Command is the same ( Command = 2).
Fixed. Yeeaaaahhh. I simplefy code to
Try
Select Case 2
Case 2
[code]....
and change project to Console app. This works as I mention. The fix was in Release mode. I was debugging in Release mode. When I switch to Debug mode everything goes as it should.
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Jul 11, 2010
I'm building a listview search feature in my app. (See the code below). It works really well, except if you search "T" then the code removes all items, if you search "t" then it removes every item except for those starting with "t". Is there any way to make a 'like' statement, or use some kind of wildcard to make the statement not case sensitive?
For Each itm As ListViewItem In ListView2.Items
If itm.Text Like TextBox1.Text & "*" Or itm.SubItems.Item(1).Text Like TextBox1.Text & "*" Then
Else
[code].....
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Oct 26, 2009
how would you change this if..then...else to a case statement? i've done simpler ones but this one i dont seem to be able to do it..
[Code]...
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Mar 6, 2011
i just have an error about this code:
[Code]...
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Jun 3, 2011
I just replaced a different segment of code with the select case statement and it works fine. However I don't understand what the dim is for after you do "Select case [variable name here]"
I currently just dimmed a value as nothing. I didn't specify any data type for my variable I'm using for this case statement. But it works.[code]...
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May 4, 2011
I was reading an interesting article here and it made an interesting point about the 'case' statement in vb.net vs the 'switch' statement in C#, which I've pasted below:The following Visual Basic Select Case statement can't be represented in C# with a single switch statement:
Dim Condition As Integer = 55
Select Case Condition
Case 1, 3 To 5, 10, 12, 14, Is > 50
[code]....
I've always found the switch statement in C#, with dropthrough and consequentrequirements for a break in each case, to be a bit unwieldy. Is there any reason they haven't enhanced the switch command to allow these situations? W
EDIT AFTER CLOSE: I'm surprised this was closed, really. With the number of extension methods and helper classes I've found online for other things, I thought an enhanced 'case' would be a good chance. I somewhat hoped a luminary such as Jon Skeet may have commented on the background reasoning, rather than the individuals below who've obviously thought 'religious debate' as soon as more than one language is mentioned.
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Oct 2, 2010
I am having difficulties getting a case to behave like I want it to. I have to calculate income tax using a case statement. For example if someone makes $7000 or less then they are charged a 10% tax of their input income, if they make $7000 to $30,000 it will bee 10% on $7000 and 15% on the remainder of input income and so on and so forth.determining how to set up a functioning case statement like this?
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Dec 17, 2011
I've got the following that has got multiple values of a particular variable and I don't want to stack up to a lot of IF ELSE statements to handle them, so I'd be grateful if some one could very kindly modify the code by using the SELECT CASE statement. Also, I'd like dgMarksEntry.Item(7, i).Value and dgMarksEntry.Item(8, i).Value to handle RANK and COUNT the number of items entered respectively. [Code]
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Sep 22, 2010
Is there a way to use the Select Case statment in VB.net for beginswith? Or do i have to use a long elseif? Example:
If text.StartsWith("/go") then
elseif test.StartsWith("/stop")
elseif test.StartsWith("/continue")
[Code]....
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Jul 13, 2011
I am trying to type in the food Pizza, Taco or Crepe and get a picture of the food to come up along with a message box that gives the country.[code]
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Oct 20, 2009
I am not really a fan of if statements. I think they should only be used when comparing different values like this:
Dim status as boolean = false
Dim number as integer = 5
if status.equals(true) then
[Code]....
or msgbox on a different line whatever you want.... What is this rule about that select case should only be used if there more then 2-3 options. Is it wrong to use a select case instead?
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Sep 1, 2010
in combo box string is xxx and yyy and zzz.we have to store the value to each string like xxx=10, yyy=20 and zzz=30. formula is string(xxx)/1.71^(1/2).. if we select xxx formula have to take value 10 or yyy means formula have to take value 20.
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Apr 1, 2012
I am trying to figure out how to test two conditions in a Case Statement.[code]...
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Apr 15, 2010
Is there anyway I can build a Select statement that uses the Contains function? Like this:
Select commentStr
Case commentStr.Contains("10")
Case commentStr.Contains("15")
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Mar 10, 2009
am using VB.NET 2008 and am a complete beginner. am writing a programme that requires the user to select a number from a NumericUpDown control and the number selected will enable the equivalent number of GroupBoxes on a form following a click event.
[Code]...
think that the argument to be passed to the method or sub will be the Case condition but how do I return the corresponding code to enable the GroupBoxes? I have the same issue with resetting all my textboxes to some default text then the user activates more then one event.
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Nov 21, 2009
I am a noob and I am trying to make a simple resistance calculator for practice. I use text boxes to let the user input the current and voltage, and then a combo box for the units and then a list box to display the results. For some reason no matter which units I select it doesn't convert at all. For example 1/2 will always show up as 0.5 in the list box no matter which units are selected from the combo box. Here is my code.....I know that there is more cases but I only put one to see if it
Public Class Form1
Dim unitsA As String
Dim unitsV As String
[code].....
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Mar 23, 2009
My code is:
CODE:
Now i want to know can i use select case instead of if (condition)statement in this code?
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Apr 15, 2011
What is the best way to compare an Int entry from a table in a case statement?Using SQL server 2008 R2, Visual Basic Express with LINQ to SQL.The code I tried doesnt work:
Private Sub UpdateSetOpt()
Dim db = New ACEDataContext
Dim SRM = From q In db.Settings
[code]....
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Oct 17, 2009
I have trouble of writing the select case statement. I am trying to select the first case to change the labels text and if I select the case again then show up the messagebox.
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Select Case test
Case test
Label1.Text = "test"
[code]....
When I selected the button which the labels text have changed and I have selected the button again, but the messagebox doesn't appear on the screen.
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Dec 10, 2007
what is the propert way to use Case statement for;When user click on a button it will show different picture everytime.I do not want a random generator. Just show pictures in order
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Sep 6, 2011
This error occurs occasionally in Production but I can't reproduce it in DEV
System.NullReferenceException: Object reference not set to an instance of an object.
at CommandCenterHeader.ascx.vb:line 23
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
[Code]...
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Jun 4, 2012
I have a case statement which compares data by getting parameter such as "eq,ne,gt,..." and so on. Actually this method will filter data by getting filter parameter and filter value. How can I refactor below code?
[Code]...
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Jul 4, 2011
I want to check the current time with the half an hour time slots (total of 48 starts from 00:00,00:30,01:00,....23:30). Is it possible using select case statement.
I am storing the current time in an object.
Dim datime As DateTime = DateTime.Now.ToString("t")
now i need to do conditional check on this variable. under whichever the time slot the variable belongs, i need to write a value under corresponding timeslot.
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