String Manipulation using vb.net

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VB

How to find particular letter,how many times occur in the given string pl give me solution

Posted 29-Jun-11 22:41pm

IdhayaRani

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Sergey Alexandrovich Kryukov 1-Jul-11 2:06am

My reason for vote of 1: too lazy to look at standard MSDN documentation which comes with every type and type member.
--SA

3 solutions

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Tarun.K.S · Answer 1 · 2011-06-29T22:54:00

Solution 2

You can do it the LINQ way:

C#

string s = "How are you doing?";
int count = (from char c in s.ToCharArray()
             where c.Equals('o')
             select c).Count();

This will return 3.

Update : The VB version(thanks to Simon):

VB

Dim s As String = "How are you doing?"
Dim count As Integer = (From c As Char In s.ToCharArray() _
                        Where c.Equals("o"c) _
                        Select c).Count()

Posted 29-Jun-11 22:54pm

Tarun.K.S

Updated 29-Jun-11 23:47pm

v3

Comments

Simon_Whale 30-Jun-11 5:39am

There is a sutble difference in VB and that is changing the

c.Equals('o')

to

c.Equals("o"C)

but thanks learnt something new today :) +5

Tarun.K.S 30-Jun-11 5:42am

Thank you! :)
Aah that's right, didn't notice the VB.NET tag, silly of me!

Sergey Alexandrovich Kryukov 1-Jul-11 2:06am

My 5.
--SA

Tarun.K.S 1-Jul-11 3:03am

спасибо SA!

Simon_Whale · Answer 2 · 2011-06-29T23:31:00

2 methods that I know

1. Loop method with Substring

Dim s As String = "How are you doing?"
Dim Counter As Integer = 0
Dim CharToCount As Char = "o"

For i As Integer = 0 To s.Length - 1
  If s.Substring(i, 1) = CharToCount Then Counter += 1
Next

MsgBox(Counter)

2. LinQ thanks to Tarun K.S

VB

Dim s As String = "How are you doing?"
Dim Count As Integer = (From c As Char In s.ToCharArray Where c.Equals("o"c) Select c).Count

Prerak Patel · Answer 3 · 2011-06-29T22:48:00

Solution 1

Logically you should loop and count.

But easiest is, you can use String.Split

YourText.Split("c").Length - 1

What it does is, split your text using character.

Text = abcdcbac <br />
Split = ab,d,ba,<blank>

You can subtract 1 to get the count. ;)

Posted 29-Jun-11 22:48pm

Prerak Patel

Updated 29-Jun-11 22:52pm

v3

Comments

Sergey Alexandrovich Kryukov 1-Jul-11 2:08am

Not really effective, but original non-standard idea. I voted 4 this time.
--SA

String Manipulation using vb.net

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String Manipulation using vb.net

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