Test Two Conditions In A Case Statement?
Apr 1, 2012I am trying to figure out how to test two conditions in a Case Statement.[code]...
View 2 RepliesI am trying to figure out how to test two conditions in a Case Statement.[code]...
View 2 RepliesI have an application that contains both test code and production code. The test code points to the test files on the local machine while production is located on the server. I comment out the production code when testing. To save some time I figured I would create a Global Variable integer called pTest and encase the test and production code in a Case statement so that if I set pTest=1 then the test code will run and if pTest=0 then production code will run.
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I'm programming a utility for a game, and at the moment I am adding chat commands for it. They use the Select Case type, but I want to be able to use multiple conditions for 1 case.
Current
Case "/lame"
If sParameter = "announce" Then
AnnounceMsg("^1No Laming
^7Laming consists of
^5* ^7Attacking someone with
^5- ^7Weapon Down
^5- ^7Chatbubble Up")
[Code] .....
I get an error:
Conversion from string "/lame" to type 'Long' is not valid.
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?
View 13 RepliesI 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).
View 3 Repliesthe testBoolean is set to the value True, but for some reason when debugging, it step through both conditions, so in the end the button1.visble becomes False, but I want it to be set to True.[code]....
View 14 Repliesi 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
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So I am trying to evaluate 3 conditions in an if statement. Its not working how I would assume it should. I basically want to do this:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 And (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
If I write it in that manner it gives inconsistent results. If I workaround by writing it this way it works perfectly:
vb.net
If PGN = &HEF007E And PGNData(0) = &H58 Then
If (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
Endif
What is the proper way to do this with only one if statement?
I currently have an If...Then statement that checks if all fields of a form have been filled before saving the info in a file. I'd like to be able to tell which field has not been filled to give the user a dynamic message (at the moment, it only tells them that the checklist is not completed ) :
If (txtNoDemande.TextLength = 8 _
Or txtNoDemande.TextLength = 13 _
And txtDateLoad.TextLength <> 0 _
[CODE]...
Is there a way to determine which of these conditions is false without having to do a seperate If statement for each ?
I am trying to write a Function which will return a data table, filled with a data from a database.
The Function will accept 6 diffrenet parameters as Optional. Each one of them will be an additional condition to be added to a where clause, if it`s provided when the function is beeing called.
Is there any method in .NET to simply add a new condition to the where clause?
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
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
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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.
I'm working on my first project using LINQ (in mvc), so there is probably something very simple that I missed. However, a day of searching and experimenting has not turned up anything that works, hence the post.
I'm trying to write a LINQ query (Linq to SQL) that will contain a multiple number of conditions in the where statement separated by an OR or an AND. We don't know how many conditions are going to be in the query until runtime. This is for a search filter control, where the user can select multiple criteria to filter by.
select * from table
where table.col = 1
OR table.col = 2
OR table.col = 7
'number of other conditions
Before I would just construct the SQL query as a string while looping over all conditions. However, it seems like there should be a nice way of doing this in LINQ. I have tried looking using expression trees, but they seem a bit over my head for the moment. Another idea was to execute a lambda function inside the where statement, like so:
For Each value In values matchingRows = matchingRows.Where(Function(row) row.col = value)However, this only works for AND conditions. How do I do ORs?
I have a form that contains multiple conditional or if statements on several defferent for controls.
Example: Radio Buttons, TextBoxes and CheckBoxes.
I am intending to create an order form(demo) where the user can select multiple products.
I have a default order number that changes by one everytime an order is successful.
An order is only successful if all the information on the form is entered correctly.
My question is where do I insert the code for the order number?
Basically for the order number I have a counter that count by increment of one if an order is successful.
Meaning when the user hit place order, and all the infromation is right, then the order numer goes to 1 from zero.
Where do I add the condition for the order number since all the fields must first be completed.
Do I have to create a whole line of if else statements?
I'm using VS 2010 Professional built-in test cases. I've got a class that has a read-only property that looks something like this:
Private _server As IServer = Nothing
Public ReadOnly Property Server()
Get[code]......
In my test cases I want to make a fake server implementation so I can test some of the class methods without actually hitting the server. I've looked around and have seen the InternalsVisibleTo attribute, but that seems to only allow access to Friend-level members. Is there any simple way to get access to these members, aside from declaring them Public/Friend?
I'm still trying to understand and use Use Cases and Test Driven Development, but having a hard time crossing the line. I'm hoping someone can provide a good example of how setting a datasource and/or databinding a gridview could be accomplished using Test Driven Development. Here is my pseudo approach at it.
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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
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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..
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i just have an error about this code:
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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
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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]...
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
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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.
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?
View 9 RepliesI'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]
View 2 RepliesIs 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")
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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]
View 3 RepliesI 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?
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.
View 2 RepliesIs 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")
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.
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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.