String.Chars Property

The index parameter is zero-based.

This property returns the Char object at the position specified by the index parameter. However, a Unicode character might be represented by more than one Char. Use the System.Globalization.StringInfo class to work with Unicode characters instead of Char objects. For more information, see the "Char Objects and Unicode Characters" section in the String class overview.

In C#, the Chars property is an indexer. In Visual Basic, it is the default property of the String class. Each Char object in the string can be accessed by using code such as the following.

string str1 = "Test";
for (int ctr = 0; ctr <= str1.Length - 1; ctr++ )
   Console.Write("{0} ", str1[ctr]);
// The example displays the following output: 
//      T e s t         

The following example demonstrates how you can use this indexer in a routine to validate a string.

			Console.Write("Type a string : ");
			string myString = Console.ReadLine();
			for (int i = 0; i < myString.Length; i ++)
               if(Uri.IsHexDigit(myString[i]))
                  Console.WriteLine("{0} is a hexadecimal digit.", myString[i]); 
               else
                  Console.WriteLine("{0} is not a hexadecimal digit.", myString[i]); 
            // The example produces output like the following: 
            //    Type a string : 3f5EaZ 
            //    3 is a hexadecimal digit. 
            //    f is a hexadecimal digit. 
            //    5 is a hexadecimal digit. 
            //    E is a hexadecimal digit. 
            //    a is a hexadecimal digit. 
            //    Z is not a hexadecimal digit.            

.NET Framework

.NET Framework Client Profile

Portable Class Library

.NET for Windows Store apps

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference