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Char.TryParse Method

Converts the value of the specified string to its equivalent Unicode character. A return code indicates whether the conversion succeeded or failed.

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

public static bool TryParse(
	string s,
	out char result
)

Parameters

s
Type: System.String

A string that contains a single character, or null.

result
Type: System.Char

When this method returns, contains a Unicode character equivalent to the sole character in s, if the conversion succeeded, or an undefined value if the conversion failed. The conversion fails if the s parameter is null or the length of s is not 1. This parameter is passed uninitialized.

Return Value

Type: System.Boolean
true if the s parameter was converted successfully; otherwise, false.

The TryParse method is like the Parse method, except the TryParse method does not throw an exception if the conversion fails.

The following code example demonstrates overloads of the TryParse method for several base types, and the TryParseExact method for the DateTime base type.

// This example demonstrates overloads of the TryParse method for 
// several base types, and the TryParseExact method for DateTime. 

// In most cases, this example uses the most complex overload; that is, the overload  
// with the most parameters for a particular type. If a complex overload specifies  
// null (Nothing in Visual Basic) for the IFormatProvider parameter, formatting  
// information is obtained from the culture associated with the current thread.  
// If a complex overload specifies the style parameter, the parameter value is  
// the default value used by the equivalent simple overload. 

using System;
using System.Globalization;

class Sample 
{
    public static void Main() 
    {
    bool     result;
    CultureInfo ci;
    string   nl = Environment.NewLine;
    string   msg1 = 
             "This example demonstrates overloads of the TryParse method for{0}" +
             "several base types, as well as the TryParseExact method for DateTime.{0}";
    string   msg2 = "Non-numeric types:{0}";
    string   msg3 = "{0}Numeric types:{0}";
    string   msg4 = "{0}The following types are not CLS-compliant:{0}";

// Non-numeric types.
    Boolean  booleanVal;
    Char     charVal;
    DateTime datetimeVal;

// Numeric types.
    Byte     byteVal;
    Int16    int16Val;
    Int32    int32Val;
    Int64    int64Val;
    Decimal  decimalVal;
    Single   singleVal;
    Double   doubleVal;

// The following types are not CLS-compliant.
    SByte    sbyteVal;
    UInt16   uint16Val;
    UInt32   uint32Val;
    UInt64   uint64Val;
//
    Console.WriteLine(msg1, nl);

// Non-numeric types:
    Console.WriteLine(msg2, nl);
// DateTime 
  // TryParse: 
    // Assume current culture is en-US, and dates of the form: MMDDYYYY.
    result = DateTime.TryParse("7/4/2004 12:34:56", out datetimeVal);
    Show(result, "DateTime #1", datetimeVal.ToString());

    // Use fr-FR culture, and dates of the form: DDMMYYYY.
    ci = new CultureInfo("fr-FR");
    result = DateTime.TryParse("4/7/2004 12:34:56", 
             ci, DateTimeStyles.None, out datetimeVal);
    Show(result, "DateTime #2", datetimeVal.ToString());

  // TryParseExact: 
    // Use fr-FR culture. The format, "G", is short date and long time.
    result = DateTime.TryParseExact("04/07/2004 12:34:56", "G", 
             ci, DateTimeStyles.None, out datetimeVal);
    Show(result, "DateTime #3", datetimeVal.ToString());

    // Assume en-US culture. 
    string[] dateFormats = {"f", "F", "g", "G"};
    result = DateTime.TryParseExact("7/4/2004 12:34:56 PM", 
             dateFormats, null, DateTimeStyles.None, 
             out datetimeVal);
    Show(result, "DateTime #4", datetimeVal.ToString());

    Console.WriteLine();
// Boolean
    result = Boolean.TryParse("true", out booleanVal);
    Show(result, "Boolean", booleanVal.ToString());
// Char
    result = Char.TryParse("A", out charVal);
    Show(result, "Char", charVal.ToString());

// Numeric types:
    Console.WriteLine(msg3, nl);
// Byte
    result = Byte.TryParse("1", NumberStyles.Integer, null, out byteVal);
    Show(result, "Byte", byteVal.ToString());
// Int16
    result = Int16.TryParse("-2", NumberStyles.Integer, null, out int16Val);
    Show(result, "Int16", int16Val.ToString());
// Int32
    result = Int32.TryParse("3", NumberStyles.Integer, null, out int32Val);
    Show(result, "Int32", int32Val.ToString());
// Int64
    result = Int64.TryParse("4", NumberStyles.Integer, null, out int64Val);
    Show(result, "Int64", int64Val.ToString());
// Decimal
    result = Decimal.TryParse("-5.5", NumberStyles.Number, null, out decimalVal);
    Show(result, "Decimal", decimalVal.ToString());
// Single
    result = Single.TryParse("6.6", 
             (NumberStyles.Float | NumberStyles.AllowThousands), 
             null, out singleVal);
    Show(result, "Single", singleVal.ToString());
// Double
    result = Double.TryParse("-7", 
             (NumberStyles.Float | NumberStyles.AllowThousands), 
             null, out doubleVal);
    Show(result, "Double", doubleVal.ToString());

// Use the simple Double.TryParse overload, but specify an invalid value.

    result = Double.TryParse("abc", out doubleVal);
    Show(result, "Double #2", doubleVal.ToString());
//
    Console.WriteLine(msg4, nl);
// SByte
    result = SByte.TryParse("-8", NumberStyles.Integer, null, out sbyteVal);
    Show(result, "SByte", sbyteVal.ToString());
// UInt16
    result = UInt16.TryParse("9", NumberStyles.Integer, null, out uint16Val);
    Show(result, "UInt16", uint16Val.ToString());
// UInt32
    result = UInt32.TryParse("10", NumberStyles.Integer, null, out uint32Val);
    Show(result, "UInt32", uint32Val.ToString());
// UInt64
    result = UInt64.TryParse("11", NumberStyles.Integer, null, out uint64Val);
    Show(result, "UInt64", uint64Val.ToString());
    }

    protected static void Show(bool parseResult, string typeName, 
                               string parseValue)
    {
    string msgSuccess = "Parse for {0} = {1}";
    string msgFailure = "** Parse for {0} failed. Invalid input.";
// 
    if (parseResult == true)
        Console.WriteLine(msgSuccess, typeName, parseValue);
    else
        Console.WriteLine(msgFailure, typeName);
   }
}
/*
This example produces the following results:

This example demonstrates overloads of the TryParse method for
several base types, as well as the TryParseExact method for DateTime.

Non-numeric types:

Parse for DateTime #1 = 7/4/2004 12:34:56 PM
Parse for DateTime #2 = 7/4/2004 12:34:56 PM
Parse for DateTime #3 = 7/4/2004 12:34:56 PM
Parse for DateTime #4 = 7/4/2004 12:34:56 PM

Parse for Boolean = True
Parse for Char = A

Numeric types:

Parse for Byte = 1
Parse for Int16 = -2
Parse for Int32 = 3
Parse for Int64 = 4
Parse for Decimal = -5.5
Parse for Single = 6.6
Parse for Double = -7
** Parse for Double #2 failed. Invalid input.

The following types are not CLS-compliant:

Parse for SByte = -8
Parse for UInt16 = 9
Parse for UInt32 = 10
Parse for UInt64 = 11
*/

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, 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.

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