How to make a first letter capital in C#

Question

How can the first letter in a text be set to capital?

Example:

it is a text.  = It is a text.

Answer 1

I realize this is an old post, but I recently had this problem and solved it with the following method.

    private string capSentences(string str)
    {
        string s = "";

        if (str[str.Length - 1] == '.')
            str = str.Remove(str.Length - 1, 1);

        char[] delim = { '.' };

        string[] tokens = str.Split(delim);

        for (int i = 0; i < tokens.Length; i++)
        {
            tokens[i] = tokens[i].Trim();

            tokens[i] = char.ToUpper(tokens[i][0]) + tokens[i].Substring(1);

            s += tokens[i] + ". ";
        } 

        return s;
    }

In the sample below clicking on the button executes this simple code outBox.Text = capSentences(inBox.Text.Trim()); which pulls the text from the upper box and puts it in the lower box after the above method runs on it.