I'm getting an ArgumentOutOfRange error when using substring function in .NET. I'm new to .NET so probably doing something wrong. I have a txtField, which is a text field component in GUI. I'm using Microsoft Visual Basic 2010 Express
txtField.Substring(txtField.Length-4,txtField.Length-1)
If txt.Field contains only numberic values it works ok, but as soon as the text field contains characters it breaks.
I am using ASP.NET with VB.NET. This is my code
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I just want to trim the value to give me the 20.00 and convert it ToDouble End Result Must be 20.00 C# code will also help me undertand what needs to happen and why I am getting the error messsage Index and length must refer to a location within the string. Parameter name: length
I'm trying to create a valid RegEx replacement pattern for correctly formatting specific .XML file names. Specifically, if a file name does not begin with a prefix, let's say, ACE_. If the XML file name and extension does not begin with ACE_, prepend the string ACE_ to the file name.For example, if my input source string is the following:
Widgets.xml
I would like to execute a single RegEx Replacement that would result in the string being:
ACE_Widgets.xml.
Conversely, if the string already begins with ACE_, I would like it to remain unchanged. Also,how can I include the pattern ".xml" to ensure that the string pattern for the file name and extension ends with ".xml" in the same matching pattern for the RegEx Replacement pattern? As for the match, I have some luck with the following:
^ACE_{1}[dD]+
Which indicates there is a match for the pattern if the input string is ACE_Widgets.xml and no match if the string is Widgets.xml
The RegEx pattern would suffice, but if you need to know the language in which I'd like to use the replacement pattern is in .NET 4.0 in either C# or VB.NET.
The following posting is close to what Im looking for, but with the inclusion of the *ix directory path prefix, and the use of preg_replace() in PHP, I'm having a bit of a struggle getting it to work with what I need to do:
Regular Expression: How to replace a string that does NOT start with something?
How will I select a substring with 2 criteria? I have a Richtextbox where I select a number after a : with this code; For Each line As String In Richtextbox1.Lines Dim equalsPos As Integer = line.IndexOf(":") + 1 txtFound.AppendText(line.Substring(equalsPos, line.Length - equalsPos)) Next This is working ok, but the whole line.length is appended for number2. The line ex. Some text:my number some text-my number2. I want my number appended to txtFound, and my number2 appended to txtFound2. With my code only number2 can be appended correct.
View 4 RepliesI am trying to remove VB6 type code and use VB.Net code, in particular, remove "Left" and use "Substring". This code does not do what the old style code does. It seams to ignore the first two chars and forces the msgbox prompt no matter what I type in the textbox (at "Leave").
Private Sub TextBox5_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox5.Leave
If TextBox5.Text = "" Then
'Do nothing
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I have a piece of code that I am using a for next statement and stepping through a string a little bit at a time. The problem is I get an error towards the end of my loop because my substring goes beyond the bounds of my string.
Dim Right As Integer = StartNumber.Value
Dim left As Integer = LengthNumber.Value
Dim i As Integer = 0
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Also my streamwriter is not writing to my file?
I have a string that contains a file location[code]..."
I want to get a substring of String 1 that does not contain the name of the actual file (e.g. "C:SomeDirectoryEntries")
Which one would you prefer to extract a sub-string from the given string and why?I am thinking that since Left and Right are VB functions and not .NET functions, they may cause problems in the future in terms of compatibility.
View 3 RepliesThis question was resolved in C#, and I don't know how to do it in VB net. I want to search through a directory of files and see if my string is contained within any of the filenames. Then I just need a bolean answer if it exists or not. I know how to use the file.exists...this is not what I need. The link below is to the C# response. How to check if filename contains substring in C#
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Example i have string =D:aaabddddd.jpg
string =D:aaabdddddfsdfsdfdd.jpg
i want to flexible sub string from right to ""
so answer=ddddd.jpg and dddddfsdfsdfdd.jpg
My problem is at SubString will do the job for me, but next string could look like this: 101OldGranny91222 So I can't determind the number - for the split - of char in the string, because it changes depending on there name etc.
View 4 RepliesExample : Dim t as string="My game is football"
How can i write flexible code substring word?So Result is
My
Game
Is
football
I have a text label, split half-and-half with a "/".label1.text = "I like dogs/I like cats"This will not be the same text (and not the same textlength)every times. I need to delete everything before the "/" with only a button. (for example, delete "I like dogs")
View 6 Repliessubstring and the indexOf method
I have this problem that I'm going in circles on. The error message is "no accessible IndexOf can be called with these arguments."
My professor said that "to search for the string Los Angeles and substring will return it from the textbox, but it needs to know what position to start returning a word at, and that is where the IndexOf comes in." Does that mean substring and IndexOf are used together? That's what I did and may be the problem. Here's the code:
Private Sub btnOrder_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnOrder.Click
'Declare variables
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Can a substring have mutiple arguments? I am pulling a substring from a drop down list into my database for records, the string is between 6 and 8 numbers, is it possible to pass more than one argument to make this work?
Sample data:
DropDownList
123456 | Name
1234567 | Name
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I want to sort the binding source column (Product Code) which formatted like (AA-AAA AAA AAAA)
but i do not want straight sort on product code column, i want the sort as :
substring of 1,2 + 8,3 + 3,3 and then the rest of the column.
I know i can do it in the table direct using the OrderBy and the substring function, but the problem is that sort is not static it is dynamic according to different status means it change the substring order.
I am working on a simple Point of Sale Program for my Intro to Visual Basic class. I am trying to pull a substring with a decimal point (ex 0009.50) from the string I get from my readline and turn it into a decimal value for calculating money values. Something is wrong with they way that I am converting and I can't find how to to it write in my book.
Private Sub addButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addButton.Click
Dim currentLine As String = String.Empty
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I'm trying to remove a sub string after the last occurrence of a ".". [ocde]...
When I debug, I get an argument out of range exception for the second, counter, parameter; dummy in this case. I'm not sure why; the total length of my test string is 72, when debugging, the dotIndex is 68 and the length is 71, so I'm within the bounds of the string.
This is a tricky situation. I want to extract a certain substring from the strings given below, using VB 6.0. I process each string (row) in a for loop one by one.
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I want to keep away from string object. I have a stringbuilder object, and I want to know if it contains 'Firefox'.
View 6 RepliesMy application is in VS2008 coded in Vb.net. I have a datagridView which is getting populated from the Database.I has RegNo,RollNo,Name etc fields.The data in the Name column of database is coming from 3 columns of a certain table from database. This is how im concatinating it and displaying in datagrid.
SELECT StudAllocDtls.RegNo,StudAllocDtls.RollNo,AdmittedStudents.SurName + ' ' + AdmittedStudents.FirstName + ' ' + AdmittedStudents.LastName
My issue is i want to save this data in some other table which also has Surname,FirstName,LastName columns in the database. Im not able to split the column data present in datagridview cell into three fields. For Example:Name column in datagridview is having Name : Sachin Ramesh Tendulkar. I want to divide this string into three like : Sachin for Surname,Ramesh for First Name,Tendulkar for LastName.
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I'm filter my Listview with cboMonth my format date MM/dd/yyyy..Now I want change my format date dd-MM-yyyy.[code]
View 11 Repliesgot a string "Douglas". how do i extract a substring from the given string? how do i add a character or string in the middle of the word?
View 2 RepliesI have created a program which opens a file, eliminates the delimiters and save the info into another file.What I need is to reach a specific numbers of characters in the string (which is between 14 and 19 and tells us the date) and to compare it with the current date. If the date is equal or later than today's date , save all lines in to another file. Pease help me to walk through the string and get the substring and finally compare with the current date.
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I have a question involving the string replace function in Visual Basic.[code]...
View 1 RepliesI want to search for a substring in a textfile and delete this substring. How can this be done?
View 2 RepliesI have a column in my GridView which pulls in an individual's name. Unfortunately, the name is contained in one column in the database - both first and last. I'd like to sort on the last name, not the first...is there a way for me to tell the GridView to sort based on a substring? [code]...
View 1 RepliesMy assignment in Visual Basic 2010 is to build a order form that has two text boxes, one for the name and the other for the address. And we're suppose to use the IndexOf method on the address. I understand that IndexOf returns the position of a character and the number of characters. What would be the purpose of using the IndexOf method on the address in this instance? I don't understand what I would be searching for when the user types in it's address that's going to be numbers and string characters. I think I understand what the IndexOf method does, somewhat, but why and what would I use it to achieve?
View 3 RepliesThis code for a masked text box isn't functioning correctly. When I type "PM" at the end of the text, it detects it as false, and shows me the message box.
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This code for a masked text box isn't functioning correctly. When I type "PM" at the end of the text, it detects it as false, and shows me the message box.
If MaskedTextBox2.Mask.Substring(2) = "PM" = False Then
MsgBox("I have detected that you've put something else rather than AM or PM in the last two spaces.", MsgBoxStyle.Exclamation + MsgBoxStyle.OkOnly, "Error")
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