find substring in a string

is string provide any function that allow to calculate there is how many substring inside a string??
example: string str = "how are you?"
is it possible to tell how many "o" inside the str?

Use the substring() command with a variable. when you find the string, move the variable past it, and then LOOP until you don't find it again.

that's actually pseudo-code that will solve the problem

Another way would be to use Regular expressions.

Code:

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            string str = "how are you?";
            System.Text.RegularExpressions.Regex rx = new System.Text.RegularExpressions.Regex("o");
            int i = rx.Matches(str).Count;

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Quote:

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Originally Posted by Shuja Ali

Another way would be to use Regular expressions.

Code:

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            string str = "how are you?";
            System.Text.RegularExpressions.Regex rx = new System.Text.RegularExpressions.Regex("o");
            int i = rx.Matches(str).Count;

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Excellent.

Quote:

---

Originally Posted by Shuja Ali

Another way would be to use Regular expressions.

Code:

---

            string str = "how are you?";
            System.Text.RegularExpressions.Regex rx = new System.Text.RegularExpressions.Regex("o");
            int i = rx.Matches(str).Count;

---

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Thank you very much....