Evaluate To True Or Falst In An If Statement
Jan 8, 2009I am use to coding in php and everything does not need to evaluate to true or falst in an if statement. I have this [code] How would I make that return true or false?
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Why Does This Evaluate To True
Jul 26, 2011This is probably a basic question, but I have never used this syntax before. Can someone tell me in detail how this expression evaluates to true? [Assuming IsOdd is a boolean type].
Dim i As Integer = 3
IsOdd = (i And 1) = 1
In What Circumstances Will The Following Boolean Expression Evaluate To True
Jun 5, 2010"In what circumstances will the following boolean expression evaluate to true?
strAlphabet.indexOf(StrCharacter) >= 0 And _
strAlphabet.indexOf(StrCharacter) < 0
Once you have answered that question, you should be able to complete this description: the expression indicates whether strCharacter is ..... but is not...."
Evaluate 3 Conditions In An If Statement?
Dec 9, 2011So 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?
Windows - Evaluate Two Function In One Statement?
Feb 25, 2011I am using a two-dimensional array of 10 elements, but my code is extremely slow.
[code]...
I create a new empty array with every iteration of the for loop. Is there a way I can use the same array but just clear it instead?
Windows - How To Evaluate Two Function In One Statement
Apr 18, 2012How to declare two object in one statement for vb.net?
Example
If IsNumeric(TextBox1.Text),(TextBox2.Text) Then
lbl_answer.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
Else
MsgBox("Error only number can be calculate")
End If
I can do
if isnumeric(textbox1.text) then
But I can't say
if isnumeric(textbox1.text), (textbox2.text)
How can I do so?
Make Program Case Statement Evaluate All Cases?
Jul 15, 2010Is there a way to make a VB case statement evaluate all the cases? Similar to a java switch statement (without the break).
View 5 RepliesReturn Statement Which Is True In An If Statement?
May 24, 2012Return statement which is true in an if statement
View 3 RepliesForm To Be Hided If The Statement Is True?
Aug 19, 2009I don't see why this code is not running. I want the form to be hided if the statement is true, but what it does is only open the other form but not hide this one.
Dim fileExists As Boolean
fileExists = My.Computer.FileSystem.FileExists("C: est est.tx")
If fileExists = True Then[code].....
IF Statement Always Returning False EVEN IF Condition Is TRUE
Mar 26, 2009I'm not reciving any errors at all this is Still my homework on the Compound Intrest and it's due tommarow and well an if statement isn't working
Private Sub btnCalc_Click(ByVal sender As Object, _
ByVal e As EventArgs) Handles btnCalc.Click
Dim decAmount As Decimal = 0D
[Code].....
VS 2008 If Statement - Next ListBox1.SetSelected(j + 1, True) Will Select The Same Value?
Aug 24, 2009I have a bunch of code with IF..., when this code is run ListBox1.SetSelected(j + 1, True) it select the next value but j is still 0 so the next ListBox1.SetSelected(j + 1, True) will select the same value. How can i update j?[code].....
View 16 RepliesHow To Make A Statement Run If All Conditions Are True From Multiple Condition Or If Statements
Mar 22, 2011I 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?
Getting Error " Only True Type Fonts Are Supported. This Is A Not True Type Font"
Oct 2, 2010i am using VS 2008 and just started to work with XAML and WPF. while opening in page(.xaml) in design mode i'm getting the error like this "Only TrueType fonts are supported and this is not a TrueType font".
View 7 RepliesEvaluate A Lastname And Then Set A Value
Aug 1, 2010I'm trying to evaluate a lastname and then set a value. so first two characters of last name btw M-MI would be M1, MJ-MZ would be M2
View 1 RepliesEvaluate All The Expressions?
Jan 4, 2010if i do not need to evaluate all the expressions, am i right to say that there are benefits and no disadvantages of using AndAlso compared to using And
example:
if a=b And f=g And y=k
can be better done with:
if a=b AndAlso f=g AndAlso y=k
Evaluate To False In .Net?
Sep 8, 2011I have this code and it evaluates to false instead of a string. All its doing is building a string.
[Code]...
Inter-Program Variables - If A Variable In Form1 Is "True" Than, How Can Make A Variable In Form2 Turns To "True" Too?
Feb 11, 2012I know that
Public Incognito As Boolean
is a variable called "Incognito" that is class-wide that is a boolean.My question is that is there a form-wide variable form that can like communicate with different forms. So if a variable in form1 is "True" than, how can you make a variable in form2 turns to "True" too?
Asp.net - Unable To Evaluate Expression
Apr 24, 2012I am using a class to check for certain words in my application to prevent SQL Injection. In the class, there is a for loop that tries to match a specific word with the words from a blacklist. If there is a match, I must redirect to the system's error page. However, when a match is found and I try to redirect, I keep getting the error "Unable to evaluate expression."
[Code]....
Evaluate Algebraic Expressions In VB NET?
Mar 30, 2011I am looking for a way to simplify algebraic expressions in VB.NET. It is preferred if you can give me a link to a pre-written library or class.
View 1 RepliesGet Functions To Not Evaluate The Return Until The End?
Jan 9, 2012I have functions in my program that stop after it reaches a Return line but I need the function to continue in case what I want the function to return changes. Is there a workaround for this or a way to force the function to continue after a return?
I made a Test Program to demonstrate the problem. It is a Form that contains only a button.
Here is the source code:
[Code]...
The messagebox always says "It returned False" when if it continued going through the code like I want it to it would have returned true.
How To Evaluate An EntityField For A Given String
Aug 24, 2009I have an LLBLGen Pro project which has generated VB.Net 2.0 Self Servicing code.I have a function to return a list of custom structures based on a search using the generated code.I would like to supply a Dictionary of FieldNames and Values to this function and for each one add a new Predicate Expression to the search.How can I check the String within the dictionary that represents the Field name and work out which EntityField to add the Predciate Expression for?
Dim dbFiles As New AllFilesCollection
Dim dbFilter As New PredicateExpression
If Not String.IsNullOrEmpty(ClientName) Then
[code].....
Can't Parse - Unable To Evaluate Expression
Feb 10, 2009I have this line in some
Integer.TryParse(ThisRow.Item("DatumID").ToString, n)
ThisRow is a datarow. The "DatumID" in this case happens to be an empty string, but is not Null. When I break on this line, and try to evaluate it by highlighting it and pressing Shift+F9, I get the message "Unable to evaluate expression". Interestingly, it is actually evaluating correctly (since the item holds an empty string, TryParse returns False).
I have tested this in every way I could think of (mostly I thought I had left out a parenthesis in my expression, but that wasn't true). So why won't that expression evaluate when tested, even though it is actually working correctly?
Evaluate All Occurrences Of A Field Within A List In .NET?
Apr 6, 2011I am new to VB.NET and I keep telling myself there must be a better way to do what I need to do several times a day which is look into a list and see if that one field is set to true anywhere in that list.
So far, I've been using the For Each statement:
[Code]...
But I know some of the other languages can do something like: if ListOfPlayers(*).isActive == true
which just seems more concise and to the point.
Evaluate An Attribute On A Method At Runtime?
May 17, 2011I have a Winforms project that is loosely based on MVVM. Security is implemented by the domain layer by using the PrincipalPermissionAttribute, [cod]e...
View 1 RepliesEvaluate Conditionals By Hovering In Debug?
Jan 10, 2011I'm reading a tutorial provided by someone at my university, and it claims that if you're debugging a VB.NET program, you can hover over a conditional (e.g. "Age > 13") and it will be evaluated. However, in VB 2010 Express, I am not seeing this functionality.
I believe the tutorial may have been written for a previous version of VB.NET, so I was wondering if anyone could tell me if this used to work and has been removed, or whether it has never existed?!
I am able to hover over a variable and see it's current value, and I can even "Watch" an expression (such as the conditional), but the tutorial claims[code]...
Evaluate Function In VB In Studio 2008?
Feb 27, 2009How can I use the Evaluate function in VB.net in Visual Studio 2008 so that to evaluate a string which consist of 2 variables to be evaluated.[code]...
View 2 RepliesFunction To Evaluate Two Numeric Variables At T And T-1?
Sep 25, 2009I need the create a function with two variables Price1 and Price2 and the following rule:
if Price1 > Price2 at time t and not (Price1>Price2) at time t-1 Then
result=true
else
result=false
I should be able to use a loop to store the time t and t-1 Price1 and Price2 values.How can I do this in VB.net
How To Get / Evaluate Object From Json String
Jul 15, 2010[code] please help me how to get and/or evaluate object from this json string with VB.Net.
View 1 RepliesRead And Evaluate Data From NetworkStream?
Apr 18, 2011I have a device that is continuously sending text over a TCP port and I want to write a VB.net application that will read and evaluate this data. Each line of text that arrives over the port can be of varying length and each value in the line is separated by a comma. I need to separate out these values in order to take various actions based on their contents.
The following code appears to read the NetworkStream fine but when I try to read the data into an array and output one field into a text file the code is only catching a few lines of the high number coming through the port.[code]....
Reflow A Program As Such That It Won't Be Necessary To Evaluate Everytime?
Nov 21, 2010change the program flow- so that it ignores certain precedures.Functionality: a form that displays all users. Optionally a user could check a check box and it would display his age. beside it Program Precedure: Now, I have to recheck everytime if it is checked. Is there a way to make the program just ignore a certain line of code(or something, that whatever it is I can't name). And I'm asking that the program should run without any evaluation whatsever?
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