Argument 'Length' Must Be Greater Or Equal To Zero
Feb 12, 2010
This makes no since to me I have a textbox that the user will put in information that I need to cut off so I wrote this code
txtMatID.Text = Trim(Mid(txtMatID.Text, 1, (InStr(txtMatID.Text,
"-") - 1)))
The user will imput a number value then a - then some words after that. I just want the number value. But when I try to debug the app it breaks on this line of code with this error. Argument 'Length' must be greater or equal to zero.
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Jun 13, 2011
In my decryption statement I am getting
Argument 'Length' must be greater or equal to zero. is this statement wrong
DecodedStr = Mid(DecodedStr, 1, InStr(DecodedStr, Right(DecodedStr, 4)) - 1)
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Sep 26, 2011
I disabled an exception because it was bugging me i couldnt find an intermittent error. My program reads textmessages from a phone, however a problem sometimes arises, and I am slowly pinpointing the areas of the code that cause issues. I have found however that it is sometimes here:
'Get a string of certain length
Shared Function GetString(ByRef PDUCode As String, ByVal Length As Integer) As String
[Code]....
check to see if length is zero AND thereofre try again in a moment, (because it usually works second time for some reason). I can think how to get around the exception
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Feb 1, 2012
below coding for the 'Length' error...
Public Sub ProcessFTAlchemyFiles(ByVal PathPlusfilename As String)
Dim ParserFile As String
Dim Sections() As String
Dim StationType As String
Dim ts As StreamReader
[Code]....
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Nov 1, 2011
I get this error when clicking on any of the letter buttons in my repeater. The sql statement I have works in sql server, but on my page it just errors out. The only thing that is different is that in sql server I change '@CompanyID' to an actual ID and '{0}' to 'a' so the query will run. All the posts I have found online with this problem say something about this-->{0}, but I don't see anywhere that I might be trying to pass more than one argument or have this wrong.[code]
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Feb 2, 2012
I created a .NET application that reports to a log file the contents of a registry key. My code works perfectly but it is choking on one of the string values found in the registry. The code that works normally is below.
[Code]...
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Apr 18, 2009
Sub Users_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Users.Click
Dim fmtstr As String = "{0,-15} {1} {3}"
[code]....
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Jun 21, 2010
In my application, a string generated its length can varying from 1 to 100 (not using random number algo). But I want if length is less than 7 than need to add integers 1,2,3.. untill its size reach to 7. I implements it using while loop as :
If generatedUserName.Length < 7 Then
Dim count As Int32 = 0
While generatedUserName.Length < 7
[Code].....
Is any other better way such as enbuild function Tostring() with some parameter?
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Feb 1, 2011
I'm wondering how to evaluate an expression using the assert object. The idea is to check if a string is longer then what is minimally acceptable. For example, Assert.AreEqual(stringName.length, >5). I know this method doesn't work but the concept is what I'm trying to get across. Is there a way to test this?
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Sep 12, 2010
I need to app to go through all the elements <div class="address"> and check the length of the text inside it. if its less than or equal to 2, then it needs to skip the following line and check the next <div class="address">Here is my code:
Dim content As String = ""
Dim web As New HtmlAgilityPack.HtmlWeb
Dim doc As New HtmlAgilityPack.HtmlDocument()
doc.Load(WebBrowser1.DocumentStream)
'this is where I need to check if text inside divclass="address" is <= 2
Dim hnc As HtmlAgilityPack.HtmlNodeCollection = doc.DocumentNode.SelectNodes("//div[@class='address']/preceding-sibling::h3[@class='listingTitleLine']")
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May 19, 2012
In the following LINQ query, i would like when the Loc=Locale.Gr all the records with GrID=100 returned and when the Loc is anything else all the other records with GrID <> 100 returned.How can i achieve this one? I tried something like the following, but it is totally wrong.
PrivateSub Test(Byval Loc as Locale)
Private Const GrID as integer = 100
Dim Query = From c In Mob Where c.CountryID = IIf(Loc = Locale.Gr, GrID, <> GrID) select c
End Sub
[Code]...
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Dec 5, 2011
I made this procedure re-use a select query:
[code..]
And I use it like this if I would want the selected value placed in a textbox and it works fine
[code...]
However if I want the value to be passed in a string like so:
[code...]
The string ends up having an empty string value. How do I assign the value I queried to that String?
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Mar 8, 2012
How does one check to see if the system time is equal or not equal to a specific time? So, say I want to perform an action if your system time is between 6pm and 6am. Or something similar?
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Apr 17, 2009
this 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
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Feb 17, 2011
am getting the above exception while swaping Items in the list(lstRoutePriority).PFB my code
if (lstRoutePriority.SelectedIndex > 0)
{
//Swap the two items
[Code].....
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Jan 6, 2010
I have a field displaying on a datagrid that the user has asked to be variable length based on the data that is returned. Is there an easy way to determine how many characters are returned for a field and then converting that to a pixel length so that I can change the length of the field in the code.
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Mar 23, 2009
"Index and length must refer to a location within the string. Parameter name: length" whenever I run this code
[Code]...
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Jul 21, 2010
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.
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Sep 1, 2011
I am working on my program as I have created picturebox1 and splitter1 in my program. I am coding on the if statement as I am trying to compare on the value that if they are less than 184, then do something.
Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
If Splitter1.Location <= New System.Drawing.Point(184, 0) Then
[Code]....
I know that I can't compare the value using with <= which I will only have to use = instead of <=, but i still want to compare with the value that if it less than 184, then do something.
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Feb 14, 2011
How should I write not greater than 0 in VB.NET?
psuedocode:
if x is not greater than 0 then
do something
[code]......
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Nov 5, 2011
im working on a project that is calculating the total population for given countries and its in the hundreds of thousands. And i need to output the population with the ,'s in the appropriate places.Ex. population 123456789 i need to output it in a listbox as 123,456,789 so im looking for a converter function or something built in that takes my value
[Code]...
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Mar 5, 2009
How to compare Two Dates if it is Less Than or Greater Than?? I want to know the code that shows an msgbox "Date Past" if the date in a datepicker is already past.
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Jun 12, 2009
Im trying for a message box to pop up with a price, depending on the time. Before 11:30 costs £3.00, afterwards costs £4.50. This is what i have tried but it this code gives me the message for £3.00 when the time is over 11:30 Dim day As String = Format(Today, "dddd")
[Code]...
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Dec 14, 2009
Need to return the greater of 3 values. Each value is based on user input and system calculations. Requirement = the greater of (Req1, Req2, Req3) Have tried a number of "If" "Else" and Ifs within Ifs "<" and ">" combinations without consistant results. This may seem simple to some but I am relatively new to VB. My search on MSDN was not fruitful.
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Aug 17, 2010
Say I convert some seconds into the TimeSpan object like this:
Dim sec = 1254234568 Dim t As TimeSpan = TimeSpan.FromSeconds(sec)
How do I format the TimeSpan object into a format like the following:
>105hr 56mn 47sec Is there a built-in function or do I need to write a custom function?
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Jan 12, 2011
I have a string variable that contains the following html data:
<p>
<em><strong>This is some <span style="background-color: rgb(255, 255, 0);">rich </span>text. 3 < 5 is a valid statement. <br />
[code].....
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Dec 15, 2009
I am having the following problem with a chart displaying a value that is heldwithing a variable but 10 times lager. But this is only happening in my programfor a user that is located in the Netherlands.If I run it from the UK or other people run it from other countries the valuesare displayed correctly, it only seems to be a problem for this one userin the Netherlands.I have checked my code and all is correct and there are no Multipliers added tothe value.To show what I mean see below, as I do not have the code to hand as I am currently at work.
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Jun 2, 2010
I have two columns of numbers that hold team scores for different events. I am looking for a OO way to Color the textbox of the team with the highest score in each event. I know the following will not do it (without writing a complex set of If Then Statements) but I think it might paint a clearer picture of what I am trying to do.
VB
Private Sub ColorWinner(ByVal crtl01 As Control, ByVal crtl02 As Control)
If CDec(crtl01.Text) > CDec(crtl02.Text) Then
crtl01.BackColor = Color.Gold
[Code].....
The controls are always going to be text boxes. So basicaly I want to determine the text box with the highest value and act on it without having to write a complex series of nested IF Statements.
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Dec 22, 2010
I've been using the following code to download a text file from the web. It only downloads the first 100,000 bytes of the file which is no good if the file is big. The size of the file I'm downloading can vary from day to day, so I need to be able to download a text file of any size.
Dim wr As HttpWebRequest = CType(WebRequest.Create("http://sooty.postalgroup.co.uk/tempmac/nat-import.txt"), HttpWebRequest)
Dim ws As HttpWebResponse = CType(wr.GetResponse(), HttpWebResponse)
[Code].....
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Mar 8, 2012
I have a DropDownList control and I want to set the SelectedValue to the lowest value in the dropdownlist greater than 0 for example my control drpExample has the following values:[code]I want to use drpExample.SelectedValue = The lowest value greater than 0..The SelectedValue should then be 0.90..Is there a simple way to do this?
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