Splitting strings with C# and VB.NET

3.67 (9 votes)

Examples of splitting strings into arrays using C# and VB.Net, both with the String.Split() method, and the Regular Expressions Split() method.

A textbox can take multiline input when its mode is set to MultiLine. It actually becomes an html textarea element. This example show the use of Split() to break each line of text entered into the box into separate elements of an array. the delimiter is Environment.NewLine, or "\r"

One important note regarding the C# String.Split() method. The string that's passed in as a delimiter needs to be delimited itself with single quotes - not double quotes.

[VB.NET]
'String.Split()
Dim readlines As String()
readlines = TextBox1.Text.Split(Environment.NewLine)
For i As Integer = 0 To readlines.GetUpperBound(0)
  Response.Write(readlines(i) + "<br />")
Next

'Regular Expression
Dim readlines As String()
readlines = Regex.Split(TextBox1.Text, Environment.NewLine)
For i As Integer = 0 To readlines.GetUpperBound(0)
  Response.Write(readlines(i) + "<br />")
Next

[C#]
//String.Split()
string[] readlines2 = TextBox1.Text.Split('\r');
for (int i = 0; i < readlines2.GetUpperBound(0); i++)
  Response.Write(readlines2[i] + "<br />");

//Regular Expression
string[] readlines = Regex.Split(TextBox1.Text,Environment.NewLine);
for(int i = 0; i< readlines.GetUpperBound(0);i++)
  Response.Write(readlines[i] + "<br />");

Date Posted:
Last Updated:
Posted by:
Total Views to date: 45578

1 Comment

- karthikk

nice

Recent Comments

Jon 31/03/2016 21:36
In response to Exploring Prefix: A Free ASP.NET Profiling Tool
We had the exact same experience, finding multiple bugs in an application that we thought was pretty...

ranjith 31/03/2016 05:50
In response to A Better Way To Export Gridviews To Excel
Hello Mike. i am exporting from gridview, because i have some images in my gridview. but i am error...

Matt Watson 30/03/2016 22:19
In response to Exploring Prefix: A Free ASP.NET Profiling Tool
Glad you are loving it! Matt from Stackify...

Dmitry 28/03/2016 04:26
In response to Solved - The Microsoft.ACE.OLEDB.12.0 provider is not registered on the local machine
thank you about the VS 32-bit remark...

federico 26/03/2016 11:29
In response to Request.Form Is Empty When Posting To ASPX Page
thanks!....

Micheal 23/03/2016 00:58
In response to ASP.NET MVC 5 with EF 6 - Working With Files
Thanks for the code. its pretty straightforward. worked for me on my first trial. Perfect!...

Francisco 22/03/2016 20:35
In response to ASP.NET MVC 5 with EF 6 - Working With Files
The post is very good, thanks...

Nick Brown 22/03/2016 13:53
In response to Adding A View
Hi, Many thanks for this tutorial, it's helping me get started with MVC. In VB (VS 2013) I get late...

ferry mae 22/03/2016 13:04
In response to Send form content by email in ASP.NET
do i need to change this? message.To.Add(new MailAddress("me@domain.com")); message.CC.Add(new you...

Keith 22/03/2016 12:02
In response to Creating a Connection String and Working with SQL Server LocalDB
As always worst explanation, but this time you rocked with plagiarism too .. huhh.. copied from Rick...