VS 2008 : Changing An Expression Depending On Boolean?
Mar 18, 2011
I have a basic bubble sorting algorithm that can sort either A-Z or in numerical order with just the change of a "less than" or "more than". However, I have to use the code twice in order for it to sort correctly.
'Sub Sort(ByVal array As Object)
'--A-Z
If Array(i) > Array(i +1) Then
[code]....
Anyway, if there is a way to do it, that'll allow me to have just one sort instead of having two sorts which use the same sorting algorithm, but just a different comparator.
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Mar 15, 2009
Say I have a generic list that is a list of a structure.
[Code]....
I always get an error that it's a value and cannot be set. Is there a way to change it without having to make a local copy of the item, then set the item on the list to that local item?
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Jun 7, 2010
This is just an efficiency question really.. I'm interested to know if there is a more efficient or logical way that people use to handle this sort of scenario.
In my asp.net application I am running a script to generate a new project my code at the top level looks like this:
Dim ok As Boolean = True
ok = createFolderStructure()
If ok Then ok = createMDB()
[Code]....
I create a boolean and each function returns a boolean result, the next function in this chain will only run if the previous one was successful. I do this because an asp.net application will continue to run through the page life cycle unless there is an unhandled exception and I don't want my whole application to be screwed up if something in the chain goes wrong (there is a lot of copying and deleting of files etc.. in this example).
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Jan 17, 2011
This is probably a really basic (no pun intended) question, but I can't seem to find an answer anywhere.Why does the result of func1 return False and func2 returns True? On every other test I have done, integer 1 is converted to boolean true and 0 to false. Works ok if I just set rtnValue to 1 or 0.
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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...."
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Jun 24, 2011
I am developing a VB.NET ASPX file and am trying to run a string query in VB.NET, but now I get the above error message. How can I determine the cause? Some of the code in this
[Code]...
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Nov 17, 2009
From what I read it is a good convention to name a method that returns a boolean value with the prefix of "is" or "has". So in keeping with this convention I am trying to name a method in my program with this prefix but I am running Specifically I have a class called Day. It is a simple class with a few data members and one method that returns a boolean value of true or false. The name of the boolean variable is isSpecialDay. This class has a method called isSpecialDay which takes the date of the day, applies some criteria to the date and then sets the variable isSpecialDay to true or false. My problem is that the boolean variable is named isSpecialDay and so it the method. What should I do?
Public Class Day
Private TheDate as String
Private DayName as String
[code].....
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Aug 7, 2010
I have added two checkbox controls chkBox1 and chkBox2. What I want to do is that when both the chkbox are same meaning checked or unchecked the label should be On and if both are not same label should be Off.
[Code]....
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Oct 27, 2011
After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
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Jun 9, 2009
I'm wondering if I can run different code, depending on what OS,My product is on?
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Nov 16, 2009
Im currently trying to get button depending on what the background is to do something
EG:
if Button19.BackgroundImage = my.resources.play then
AxWindowsMediaPlayer1.Ctlcontrols.play()
This doesnt work, but is there any other method of doing this?
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Feb 27, 2010
I am using webbrowser control to pull html elements off a webpage from within my home made browser. The browser it's self is actually a bot. Now, I found elements for text boxes and such to login . Now I am trying to get it check the page for certain elements on every load. This way if I get logged out it will auto login. My problem is I am getting "cannot convert to boolean blah blah blah" in a line and after hours of research on msdn and google I can't fix the problem since I am noob. Heres the code. And the error resides on the line with a "arrow" next to it.
Code:
Private Sub Connect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Connect.Click
WebBrowser.Navigate(AdressBox.Text)
While WebBrowser.ReadyState <> WebBrowserReadyState.Complete
[code].....
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May 13, 2012
I would like to know how would i make a histogram go up and down depending on the value in the textbox.
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Jul 19, 2009
How would i go about checking a file extention to see if it is either
'.exe' or '.ex_'
What i need to be able to do is that if the extention of the file is '.ex_' then that file is copied to another folder, or if the file extention is '.exe' then it is passed onto another routine that will compress is.
Baring in mind that there could be a number of files in that folder.
I already have a routine that will compress the files, just need the above.
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Aug 2, 2009
I have four textboxes that only accepts numeric data.On each box is a corresponding checkbox.I want to have a button that will get the total sum of all textboxes wherein their checkboxes are on checked state.
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Jan 1, 2010
i am making a progrom to calculate delivery charges this depending on weight of the item.i enter the weight of the item in a text box i need it to calculate the shipping cost, currently i have something like this but it is wrong. [code]
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Apr 23, 2012
I have the following code, where I want to use data from the database in an if statement, however it doesnt work, the error of conversion of string to boolean appears.
If "Staff.Welcome.Text = 1" Then
WelcomeRead = True
End If
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Mar 5, 2010
I ran some code through an automatic translator for C# to VB, and it translated some code like this:Public Property Title As [String]How is this different to Public Property Title As String
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Jan 27, 2010
i have a problem with my code: [code] At the bold part, when i goto debug my program i get the error "Conversion from string "TrueFalse" to type 'Boolean' is not valid."
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Jan 23, 2010
I got this Error. below is my code.
GenerateTheList is function.Need help
Private Sub buttGenerate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttGenerate.Click
Dim thread1 As New Thread(New ThreadStart(GenerateTheList))
thread1.Start()
End Sub
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Mar 21, 2010
While looking in the dataset designer for a database table I am doing in visual basic 2008 I found a line for expressions under the property menu for a specific column. I need to know the code that I would put in this expression line so that this column adds up the numbers I input into three other columns and displays that number in the column. I need it to automatically calculate this for each row in the database table.
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Oct 12, 2010
I am trying to write following expression on a datacolumn. But it results in error:Replicate('*', nLevel) + NameWhere: Replicate() is a user defined function (in a module). nLevel and Name are two other columns in same data table.
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Jun 12, 2012
I am using Flee to build a formula builder. It works great but the only problem I'm facing is that Flee doesn't understand Generic Methods I guess. I have a function called IIf declared in the expression context I'm using. [code]How can I work around this. I mean cannot , in sense, write all possible overloads of the function of all .net primitive types. What approach should I take.
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Apr 14, 2010
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.InvalidCastException: Conversion from string "" to type 'Boolean' is not valid. ---> System.FormatException: Input string was not in a correct format.
at Microsoft.VisualBasic.CompilerServices.Conversions.ParseDouble(String Value, NumberFormatInfo NumberFormat)
[Code]....
When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.
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Jun 3, 2009
im in the mists of making a hangman game and i almost done and i just stumbled upon a error here is all the code
Public Module Module1
Public letter1 As String
Public letter2 As String
[Code].....
i get the error in the title on the bold underlined text after i input a letter thats not in the word
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Apr 9, 2009
After moving afew things baout on my main form i am getting an error:Expression does not produce a valuein mainly this line of code (various ones are all over my application)
If (checkboxTurnOnDebugging.Checked = True) Then
'Display code for debugging
formDebug.debugTextBox.Text = HTMLResponse
[code].....
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Feb 1, 2010
is there any perfect tool of converting C# and lambda expressions into vb.net code.
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Feb 3, 2011
IM doing an assignment for college. ITs saving records to a file, and getting them back basically. So really not that hard.
The error is occuring around the following line of
[Code]...
basically all I've been doing so far, is formatting the output fields to show dates correctly. And I believe I'm getting this error. There is data in the form becasue i wrote it there to test it.I think im saving this right, but it seems ODD that its not working for me.
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Mar 8, 2011
I have a string that likes 1234_a34_b789 There are at least two "_" in the string. It cann't be the first or last letter. What is the regular expression pattern?
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Nov 26, 2011
I am trying to make a program to configure IE's proxy settings. I have made this code to change the settings:
Public Class setproxy
Public Structure Stwruct_INTERNET_PROXY_INFO
Public dwAccessType As Integer
[Code].....
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