Strings in VB.NET
In this article I will explain you about Strings in VB.NET.
A string in VB.NET is simply a set of 16-bit bytes arranged in sequential memory locations. In other words, a string is simply an array of Unicode characters. VB.NET includes a variety of standard functions to recognize this data organization as a string and emulate the actions provided by operators on true string types in other languages. VB.NET prevents functions from writing outside the bounds of the string's memory area. The example given below is a Console application that shows some basic manipulation of strings. The program prompts the user for a string, a character to be found, and a character to replace the found characters. The program illustrates simple string initialization, assignment, concatenation and indexing.
Example of Replacing characters in a string
// a string is an array of characters
Class TheReplacer
Shared s1 As String, s2 As String
Shared c2 As Char, c3 As Char
Shared Sub Main()
Try
System.Console.Write("Please enter a string:")
s1 = System.Console.ReadLine()
System.Console.Write("Please enter a character to be found:")
Dim temp As String = System.Console.ReadLine()
c2 = temp(0)
System.Console.Write("Please enter a character to replace the found chars:")
temp = System.Console.ReadLine()
c3 = temp(0)
Finally
End Try
Try
For i As Integer = 0 To s1.Length - 1
If c2 = s1(i) Then
s2 += c3
Else
s2 += s1(i)
End If
Next
Finally
System.Console.WriteLine(vbLf & "New string:" & s2)
System.Console.ReadLine()
End Try
End Sub
End Class
The example above, has this output:
Conclusion
Hope this article would have helped you in understanding Strings in VB.NET.