I have been having this error on my application. ERROR: System.ArgumentOutRangeException: startIndex cannot be larger than length of string.
Private Sub DataReceived(ByVal sender As Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort1.DataReceived
Try
Dim str1, str3 As String
[code]....
I am creating a custom checkbox control to add a div after each checkbox in a checkboxlist.The class is below.
Imports System.Web.UI.WebControls
Imports System.ComponentModel
Imports System.Globalization
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this is not working?
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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].....
I have a windows form that has custom alpha blended controls and a Graphical User Interface. One of my users has a larger system display enabled (125%) and the application expands by 25%. Is it possible to stop this happening and have the application stay at the normal size that I developed it at?
View 3 Replies"Index and length must refer to a location within the string. Parameter name: length" whenever I run this code
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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 a page that upload files to folder depend on user primession everything was ok but today i notice that this page give this error StartIndex cannot be less than zero.Parameter name: startIndexDescription:An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
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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]....
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]...
I am getting the following erro message: "Unable to cast object of type 'System.String' to type 'System.Predicate`1[System.String]'." on the line of code: If Not StrgFrag.Exists(wrd) Then I was expecting a True/False response and assumed it would work given that wrd is a String variables and StrgFrag in a List(of String). Do I need to reference the wrd variable differently? Dim StrgFrag As New List(Of String)
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I'm writing some code that takes a report from the mainframe and converts it to a spreadsheet. They can't edit the code on the MF to give me a delimited file, so I'm stuck dealing with it as fixed width. It's working okay now, but I need to get it more stable before I release it for testing. My problem is that in any given line of data, say it could have three columns of numbers, each five chars wide at positions 10, 16, and 22. If on this one particular row, there's no data for the last two cols, it won't be padded with spaces; rather, the length of the string will be only 14. So, I can't just blindly have
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If I have a string Metal is hot : Metal length is 5 cm ; Metal is red. I want to get the sub string that is talking about length: hence I want to extract "Metal length is 5 cm".
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Value of type 'System.Func(Of String, String)' cannot be converted to 'System.Converter(Of String, String)
Why? They are both effectively a function pointer (or delegate?) to a function that accept a string and return a string.
My text file lines look like this
------------------------------------------------------------------------------
AGILENT 3070 FIXTURE WIRING REPORT Sat Mar 07, 2009 06:43:05 PM
/var/hp3070/boards/Celestica/wbf303/fixture/wires
------------------------------------------------------------------------------
Fixture Type : Agilent SimPlate Express
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but this line Dim Iend As Integer = line.IndexOf(")", Istart) give me error
"Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: startIndex"
System.Security.Cryptography.CryptographicException: Length of the data to decrypt is invalid.
My Code:
' Decrypt textfile with Rijndael encryption
Public
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How can I count the length of a string and also how many special characters are in the strings.
For instance if I have this string: $how*
How can I count that string is 5 chars long and that there are 2 special characters in the string. (special characters are the $ and
I think that I am going to have to use the .length method to count the length of the string.
i had the code belowing workin fine before but all of a suden i have a error init
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I was trying to grab the string length of readData but when I try msgbox (readData.Length),
its giving me a large numeric digit instead.
Dim readData as string
serverStream.Read(inStream, 0, buffSize)
Dim returndata As String = _
System.Text.Encoding.ASCII.GetString(inStream)
readData = "" + returndata
msg()
Is there any way to set max string length in a class used in a VB.NET web service so it gets into the WSDL as a maxLength attribute?
View 1 RepliesWith setting the string length. I have got a streamreader reading from a .doc file into a listbox and then i want to set the string length of how long it to be and then if longer to go to the next line so it will fit in the listbox as the listbox you cant scroll accross but you can up and down.
Ive done this so far:
Try
Dim file_name As String = "K:\Uni\Year 2\Visual Basic\Report\MSDN\Absolute Beginner's Series VB Lesson 1\01 VB Lesson Transcript.doc"
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I have the below code that if there is no .wav file in the current directory then it goes to the default windowsmedia directory to play a random .wav file.
But for some reason if there is no file in the current folder it will not go to the windowsmedia folder, do I have something wrong?
Dim FileNames As String() = System.IO.Directory.GetFiles(".", "*.wav")
Dim FileNames2 As String() = System.IO.Directory.GetFiles("C:WindowsMedia", "*.wav")
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I've created some classes that will be used to provide data to stored procedures in my database. The varchar parameters in the stored procs have length specifications (e.g. varchar(6) and I'd like to validate the length of all string properties before passing them on to the stored procedures.
Is there a simple, declarative way to do this?
I have two conceptual ideas so far:
Attributes
public class MyDataClass
{
[MaxStringLength = 50]
[Code]....
This seems like a lot of work and will really make my currently-simple classes look pretty ugly, but I suppose it will get the job done. It will also take a lot of copying and pasting to get this right.
I am working on a program that will take in a string of length 7 containing either R,G or B for the colours. The program will then check that the string if 7 in length and if it contains any other characters than R, G or B then it will be invalid. I created this code but when I enter the right string length and characters it always gives me the error for not having the right string length.
Private Sub get_cars()
Dim Letter As String
Dim valid As Boolean
Dim position As Integer
txtPosition.Text = position
[Code] ......
How can I create an empty string that is a certain length?
View 5 RepliesI am having some problems declaring a fixed lenght string in vb.net. I am studying code for using webcam in vb.net, although the code is from vb6 but I am told it works in dot net. Everyting else seems to be working except this line[url]...
View 3 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
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Here's my
Private Sub CmbLabour1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles CmbLabour1.KeyPress
If Char.IsDigit(e.KeyChar) = False And Char.IsControl(e.KeyChar) = False Then
e.Handled = True
[Code].....
I have a program with 136 textboxes.
I want to be able to take a string that is entered into a textbox, and then put character 1 of the string in Textbox1, char 2 in TB2, char 3 in TB3, etc.
Also, how do I check the length of a string, like strlen in PHP?
Im working a lot with normal strings and during my development process strings with lengts of 10.000+ characters are being processes which makes it a my application run slower.Is it possible to shorten the length of any of string, in a way in which it also can be reversed?
View 16 Replies