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.

Answer 2

polygenelubricants' answer is fine for most cases, but you potentially need to think about cultural issues. Do you want this capitalized in a culture-invariant way, in the current culture, or a specific culture? It can make a big difference in Turkey, for example. So you may want to consider:

CultureInfo culture = ...;
text = char.ToUpper(text[0], culture) + text.Substring(1);

or if you prefer methods on String:

CultureInfo culture = ...;
text = text.Substring(0, 1).ToUpper(culture) + text.Substring(1);

where culture might be CultureInfo.InvariantCulture, or the current culture etc.

For more on this problem, see the Turkey Test.

Answer 3

Try this code snippet:

char nm[] = "this is a test";

if(char.IsLower(nm[0]))  nm[0] = char.ToUpper(nm[0]);

//print result: This is a test

Answer 4

I use this variant:

 private string FirstLetterCapital(string str)
        {
            return Char.ToUpper(str[0]) + str.Remove(0, 1);            
        }

Answer 5

static String UppercaseWords(String BadName) { String FullName = "";

        if (BadName != null)
        {
            String[] FullBadName = BadName.Split(' ');
            foreach (string Name in FullBadName)
            {
                String SmallName = "";
                if (Name.Length > 1)
                {
                    SmallName = char.ToUpper(Name[0]) + Name.Substring(1).ToLower();
                }
                else
                {
                    SmallName = Name.ToUpper();
                }
                FullName = FullName + " " + SmallName;
            }

        }
        FullName = FullName.Trim();
        FullName = FullName.TrimEnd();
        FullName = FullName.TrimStart();
        return FullName;
    }

Answer 6

If you are using C# then try this code:

Microsoft.VisualBasic.StrConv(sourceString, Microsoft.VisualBasic.vbProperCase)