Export (0) Print
Expand All

Convert.ToChar Method (String)

Converts the first character of a String to a Unicode character.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

public static char ToChar (
	string value
)
public static char ToChar (
	String value
)
public static function ToChar (
	value : String
) : char
Not applicable.

Parameters

value

A String of length 1 or a null reference (Nothing in Visual Basic).

Return Value

The Unicode character equivalent to the first and only character in value.

Exception typeCondition

ArgumentNullException

value is a null reference (Nothing in Visual Basic).

FormatException

The length of value is not 1.

value must be a null reference (Nothing in Visual Basic) or a String containing a single character.

The following code sample illustrates the use of ToByte, by attempting to convert a String value to a Char :

public void ConvertStringChar(string stringVal) {
    char charVal = 'a';

    // A string must be one character long to convert to char.
    try {
        charVal = System.Convert.ToChar(stringVal);
        System.Console.WriteLine("{0} as a char is {1}",
            stringVal, charVal);
    }
    catch (System.FormatException) {
        System.Console.WriteLine(
            "The string is longer than one character.");
    }
    catch (System.ArgumentNullException) {
        System.Console.WriteLine("The string is null.");
    }

    // A char to string conversion will always succeed.
    stringVal = System.Convert.ToString(charVal);
    System.Console.WriteLine("The character as a string is {0}",
            stringVal);
}

public void ConvertStringChar(String stringVal)
{
    char charVal = 'a';

    // A string must be one character long to convert to char.
    try {        
        charVal = System.Convert.ToChar(stringVal);
        System.Console.WriteLine("{0} as a char is {1}", stringVal, 
            System.Convert.ToString(charVal));
    }
    catch (System.FormatException exp) {        
        System.Console.WriteLine("The string is longer than one character.");
    }
    catch (System.ArgumentNullException exp) {        
        System.Console.WriteLine("The string is null.");
    }

    // A char to string conversion will always succeed.
    stringVal = System.Convert.ToString(charVal);
    System.Console.WriteLine("The character as a string is {0}", stringVal);
} //ConvertStringChar

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

Community Additions

ADD
Show:
© 2014 Microsoft