I try to determine the lenght of a string variable, but get the wrong outcome when using: testje = Len(testSTR). When I insert the following line of code: testje = testSTR.Length the answer is still wrong but when I click "Length" I see the correct value. How to get at that value, so I can use it?
View 11 RepliesI am trying to determine the length of a string in pixels.
I created a little test program for myself and placed three labels on it, each with the same font in a different size. I set the width of the label to 1024, the screenwidth. I used the same test text for each label, cutting it off at the last character that shows, so there is not hidden text running off the label to be included in the string width count.
What I have found is that the width of the string is being reported as wider than the label, even though, as I just mentioned, there are no characters running off the edge of the label. So, something's awry. Does anyone know how to get an accurate width?
Here follows the whole test code. You can drop three labels on a form and run it to see what I mean.
Code:
Option Explicit On
Option Strict On
Public Class frmMain
[Code].....
Do you know of a way of knowing the lenght a string will ocupy on a .DrawString using PrintDocument?
What I want to do is to break up a string in case it won't fit on the page, do not sugest to search for the lenght of the string itself because I am not interested in the number of characters, as you may know, PrintDocument "draws" the text on the page so on proportionate fonts, the number of characters is independent on the lenght of the output.
this is the line that prints the text:
vb.net
e.Graphics.DrawString(strText, New Font("Arial", 12), Brushes.Black, 10,10)
Of course I could use monospaced fonts like courier or the like but... well, I don't want to.
Using VB or C#, I am getting a string of variable length from the database. This information is sensitive information that only certain users will be able to see.I have two cases that will use the same logic (I think).scenario 1: replace all characters with xscenario 2: replace all characters with x except the last 4 characters (assume length > 4 - this check is being done).I thought that this would be easiest using Regex.Replace(input, pattern, replacestring). As opposed to a lot of string handling with substrings and forcing a length of 'x's.
View 2 RepliesI am writing a program for my intro to programming class. we have to make a bar chart using asterisks to show the bar items. he said we have to use nested loops. that i understand, but i can't figure out how to add the asterisks into the string without causing them to all be on separate lines.
View 3 Repliesthis is not working?
[Code]...
End WhileI am trying to read from the ": " to the end of the line. I keep getting this error: Index and length must refer to a location within the string. Parameter name: length
am getting the above exception while swaping Items in the list(lstRoutePriority).PFB my code
if (lstRoutePriority.SelectedIndex > 0)
{
//Swap the two items
[Code].....
Is there a way to get the time length of an mp3 in VB.net? I have TagLib, but it doesn't seem to have any functionality for it.
View 2 RepliesI want to determine size/length of an array that is, how many elements are in my 1 dimen array, can't seem to find the right method that works.
View 9 Repliesdetermine the length of the value/string returned from a regular expression and convert it to a different string layout Alternate:replace the . with a / in the regular expression?replace a character with another character in a regular expression AND determine the length of that expression to replace it with a string output using that regular expression?IE if the regular expression returns 3.0.4.u1, i need this to read c3/0/4 up 1 instead.Below is the code I have so far (cut from the total program)
' original text
Dim myText As String = rawData
' capture the interface pattern (first # in string)
Dim interfaceUS As String = "s(d.d.d.ud)|(d.d.ud)"
[code]....
I am trying to program the hamming code in vb... theoretically i understand and know how to do everything, first problem I've encountered is dynamic arrays in vb.net ... is it possible to determine the length of an array from the number of items entered in it, since I have no means of figuring out an exact number or length prior to several mathematical function which outcome will be the data .. directly saved to the array !!
View 4 Replies"Index and length must refer to a location within the string. Parameter name: length" whenever I run this code
[Code]...
If using the following in an if statement I get an error: If trg.Name.Substring(4, 6).ToUpper <> ("ABCDEF") Then I get the error: "Index and length must refer to a location within the string. Parameter name: length"
I assume this is because the string (trg.name) is too small for the 4, 6 substring. What would be the correct method of working around this problem? VB.net Studio 2008.
I have an integer that is storing the result of a division between two numbers. I usually receive an result that looks like 5,2496874654. How can I limit the variable length so it looks more 'approximated', like 5,25?
View 11 RepliesMe and my coworker were discussing variable names today because we both have completely different naming conventions...but we were wondering is the a limit on the length of the variable name??? is it posible to do this: dim
ItsPeanutButterJellyTimePeanutButterJellyTimePeanutButterJellyPeanutButterJellyPeanutButterJellyWithABaseBallBatPeanutButterJellyPeanutButterJellyPeanutButterJellyWithABaseBallBat as string = "lol"
I'm looking for a way to search a string variable for two words and copy the text in between them into another variable. This needs to be done as many times as the match occurs.
View 3 RepliesI am new to VB.NET but used to write a lot of code in VB 6.
How do i declare a variable length array in VB.NET?
In VB6, i would just put:
Dim sArrayList() As String
But when I do that in VB.NET, it highlights my array name and says "unused local variable". What do I need to do to get it to work without an error?
G10L41T20P0C15D1.2S1I0E1.2H4.7262K0.J0Q1450N000000 01
G10L41T21P0C19D0.87S1I0E0.875H5.9386K0.J0Q884N0000 0001
G10L41T22P0C2D0.53S1I0H7.3233K0.159B0J0Q236N000000 01A0.
[code]......
I need to truncate to sertain amount of decimals for example : dim x as double;x= 6.98455 textbox1.text = x that mean textbox1.text= 6.98455 I need textbox1.text= 6.99
View 4 RepliesI'm trying to call the GetInterfaceInfo Windows API - it accepts a structure as one of its parameters and this structure has a member that is an array. The API populates the contents of the array when it is called and there can be any number of items in the array. How can I define such an array in my structure?
If I just use a normal .NET array like so then the program just crashes (no exception thrown)
<StructLayoutAttribute(LayoutKind.Sequential)> _
Public Structure IP_INTERFACE_INFO
Public NumAdapters As Integer
[Code]...
and this works fine, but the problem is I have to define the SizeConst attribute as you can see to something large (64 in this example) so that the API doesnt fail because the array wasnt big enough. Firstly this is a waste of memory as in most cases the number of items the API sticks in the array will be less than 10, but secondly if there was ever a case where the API wanted to put more than 64 items in then it would fail.
Using ReDim to set the length of the array at runtime seems to have no effect, and that SizeConst attribute has to be set to a constant value so there's no way I can dynamically set it.
Is it possible to have a 2 dimensional array of a type struct such that the size of the last dimension can vary by element of the first?eg:-structure mydatadim param1 as integerdim param2 as byteend structuredim main_array(100,10) as mydataThen at anytime change the size of the last dimension like...redim main_array(10, 5)redim main_array(15,7)leaving all other array entrys' last dimension unchanged and independent??VB2005 starter
View 3 RepliesI have 2 arrays X(n) and Y(n). I would like to pass them between subroutines:
Sub sub1()
...
call sub2(X,Y)[code]...
The problem comes when n can be changed in sub1 say a textbox. How do you transfer an array of variable length between subroutines?
I have a problem when debugging a code. On top of class I declare an array, and the length of array is an integer variable which is applied value below declaration of array.
E.g. class declaration
Dim array1 (2, integer) as string
Public Sub
integer = 5
End Sub
So basically, array is created with integer being 0 or whatever, because it is declared before integer was assigned a value. But the problem is, I need it to be declared at class variable so I can use array in different subs.
I am wanting to create 2 tables called Stores and Locations. Locations is a table containing a unique location_code and a location. Stores is a table containing a unique store_code a store name and a variable number of location_code's and a relationship is set up between the 2 tables.
creating the Stores table in particular the location_ code. Can rows in a table have differing numbers of columns? as a particular store type could be in many diferent locations. I feel it should be possible to set up some sort of array of Location_code's in the Stores table.
when i transfer the bytes sent by the client program to a string the string length is affected.when i put the bytes sent by the client program to a message box. it returns the corrrect text. but when i check the length it will return 8192 or higher. but the actual size is just 5.
My Code
Dim tcpClient As TcpClient = tcpListener.AcceptTcpClient()
RichTextBox1.Text = RichTextBox1.Text & vbNewLine & "Connection accepted."
' Get the stream[code]....
How do I declare a fixed length variable array?[code]...
View 1 RepliesHow do I declare a fixed length variable arra
Structure MyInformation
<VBFixedString(4),System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValTStr,SizeConst:=4)> Public ReturnStatus As String
[code]....
While using the Socket.Receive method to receive messages through network, you should define a variable as the buffer and you have to specify the length like this: Code: Dim _ReadBuffer As Byte() = New Byte(LENGTH) {} My question is: What is the bad thing about increasing the length of this variable even if the received messages are sometimes shorter? (i.e. if some body let it 10000).
View 1 RepliesI am having some trouble with an array full of data which I am trying to process. The data has been picked out of an Excel spreadsheet and contains items such as phone numbers. The problem is that when I drop this array back into a spreadsheet, Excel being clever, decides that some of the phone numbers are numbers and removes the "+" from the front.[code]...
I know that adding a ' in front of the + will remedy this. What I need to do is find out which of the numbers in the array are actually numbers and which have spaces/characters in them. IS there a quick way of doing this without having to search through each individual character of each array position?
I have a long string like this
dim LongString as String = "123abc456def789ghi"
And I want to split it into a string array. Each element of the array should be in 3 characters length[code]...