Count how many "comma's" are in a line.

[Datadayne]

I need a code to count how many commas there are in a richtextbox line. If there are 4 or more comma's then do something, else delete line.

Im not sure if regex is required for this.

[motil]

you can just split the string with the comma as the delimiter and check the array length.

[Datadayne]

Im splitting the line like this. Dim parts As New List(Of String)(Regex.Split(RichTextBox2.Text, ", ?")

How do I check the array length?

[motil]

No.
try this

Dim Count As Integer = RichTextBox.Text.Split(New Char() {","c}).Length

[.paul.]

or you could use LINQ:

Dim str As String = "1,2,3,4,5"
Dim Count As Integer = Aggregate c As Char In str _
                                Where c = "," _
                                Into Count()

[motil]

slower :P

[jmcilhinney]

No.
try this

Dim Count As Integer = RichTextBox.Text.Split(New Char() {","c}).Length

There's no need to explicitly create a Char array unless you want to specify a StringSplitOptions too. The overload that takes just a Char array declares its parameter as a ParamArray, meaning it will accept zero, one or more discrete Chars as well as a single array:

Dim Count As Integer = RichTextBox.Text.Split(","c).Length

[akhileshbc]

Why the character "c" is used in your code ?
Note: I'm a newbie

[jmcilhinney]

Why the character "c" is used in your code ?
Note: I'm a newbie

Zero or more characters within double quotes is a String literal. Exactly one character in double quotes and suffixed with a lower case c is a Char literal. In C#:

string str = "X";
char ch = 'X';

In VB:

Dim str As String = "X"
Dim ch As Char = "X"c

[akhileshbc]

Thanks jmcilhinney
I have created a separate thread regarding this question : http://www.vbforums.com/showthread.php?t=628219
Sorry for hijacking the thread.