String Upper Case in C#

To uppercase every first letter of a word in a string, you can use the TextInfo.ToTitleCase method available in the System.Globalization namespace. Here is an example:

using System.Globalization;

string input = "the quick brown fox jumps over the lazy dog";
TextInfo ti = CultureInfo.CurrentCulture.TextInfo;
string output = ti.ToTitleCase(input);

This will produce the following output: "The Quick Brown Fox Jumps Over The Lazy Dog".

To make the first letter of a string uppercase, you can use the String.ToUpper method and then concatenate the rest of the string:

string input = "hello world";
string output = input.Substring(0, 1).ToUpper() + input.Substring(1);

This will produce the following output: "Hello world".

C# string to uppercase example:

string input = "Convert to uppercase";
string uppercase = input.ToUpper();
// Result: "CONVERT TO UPPERCASE"

Uppercase conversion in C# string: Using the ToUpper method to convert the entire string to uppercase.

string input = "Uppercase conversion";
string uppercase = input.ToUpper();
// Result: "UPPERCASE CONVERSION"

String.ToUpper method in C#:

string input = "String.ToUpper method";
string uppercase = input.ToUpper();
// Result: "STRING.TOUPPER METHOD"

C# convert string to uppercase without ToUpper:

string input = "Convert without ToUpper";
string uppercase = new string(input.Select(char.ToUpper).ToArray());
// Result: "CONVERT WITHOUT TOUPPER"

Case-insensitive uppercase conversion in C#:

string input = "Case-Insensitive Uppercase";
string uppercase = input.ToUpperInvariant();
// Result: "CASE-INSENSITIVE UPPERCASE"

C# uppercase first letter of each word in a string:

string input = "uppercase first letter";
string[] words = input.Split(' ');
for (int i = 0; i < words.Length; i++)
{
    words[i] = char.ToUpper(words[i][0]) + words[i].Substring(1);
}
string result = string.Join(' ', words);
// Result: "Uppercase First Letter"

Uppercase specific characters in C# string:

string input = "Uppercase specific characters";
char[] specificChars = { 's', 'c' };
foreach (char c in specificChars)
{
    input = input.Replace(c.ToString(), c.ToString().ToUpper());
}
// Result: "UpperCaSe SpeCifiC CharaCterS"

C# uppercase only first letter of a string:

string input = "uppercase only first letter";
string result = char.ToUpper(input[0]) + input.Substring(1);
// Result: "Uppercase only first letter"

Convert lowercase to uppercase in C#:

string input = "convert lowercase";
string uppercase = new string(input.Select(char.ToUpper).ToArray());
// Result: "CONVERT LOWERCASE"

Handling special characters during string uppercase conversion in C#:

string input = "Handling special characters";
string uppercase = new string(input.Select(c => char.IsLetter(c) ? char.ToUpper(c) : c).ToArray());
// Result: "HANDLING SPECIAL CHARACTERS"