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   ► KBProgrammingVB.NetTool Basics   Print This     
  From the November 2014 Issue of Prestwood eMag
 
VB.Net Tool Basics:
VB.Net String Concatenation (+ or &)
 
Posted 13 years ago on 11/10/2008 and updated 1/1/2009
VB.Net Code Snippet:
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KB101595

VB.Net String Concatenation

To concatenate two strings, use either the + or & operators. The & operator implicitly converts numbers. If you use the + operator to concatenate a string and a number, you have to cast the number as a string with CStr.

Alternatively, you can use the System.Text.StringBuilder class which frequently but not always provides faster code.

Syntax Example:
Dim FullName
Dim Age
  
//You can use + for strings.
FullName = "Prestwood"
Console.WriteLine("Hello " + FullName)
 
//For implicit casting, use &
Age = 35
Console.WriteLine(FullName & " is " & Age & " years old.")
'Implicit casting of numbers.
'
'This works:
MessageBox.Show(3.3)
  
'This fails:
'MessageBox.Show("" + 3.3)
  
'This works:
MessageBox.Show("" + CStr(3.3))
  
'Implicit casting &. This also works:
MessageBox.Show("" & 3.3)

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Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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