String Concatenation in ASP.NET

Posted Date: 01 Sep 2007	Resource Type: Articles	Category: .NET Framework
Author: Kamal	Member Level: Gold
Rating:	Points: 10

An example of how strings can be concatenated with the StringBuilder class

If you concatenate a string like this:


        Dim s As String = ""  
        s &= "This "  
        s &= "is "  
        s &= "an "  
        s &= "example "  
        Label1.Text = s   

        Dim s As String = ""
        s &= "This "
        s &= "is "
        s &= "an "
        s &= "example "
        Label1.Text = s

then you actually end up with 5 strings in memory rather than just the original one that you created. This obviously isn't very efficient.

Instead, you can use the System.Text.StringBuilder class which is both quicker and uses less memory as only one object is created:


        Dim sb As New StringBuilder   
        sb.Append("This ")   
        sb.Append("is ")   
        sb.Append("an ")   
        sb.Append("example")   
        Label1.Text = sb.ToString()

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