This topic has not yet been rated - Rate this topic

Convert.ToString Method (Int32, Int32)

Converts the value of a 32-bit signed integer to its equivalent string representation in a specified base.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
public static string ToString(
	int value,
	int toBase
)

Parameters

value
Type: System.Int32

The 32-bit signed integer to convert.

toBase
Type: System.Int32

The base of the return value, which must be 2, 8, 10, or 16.

Return Value

Type: System.String
The string representation of value in base toBase.
ExceptionCondition
ArgumentException

toBase is not 2, 8, 10, or 16.

If value is positive and toBase is 2, 8, or 16, the returned string uses sign-and-magnitude representation. If value is negative and toBase is 2, 8, or 16, the returned string uses two's complement representation. This means that the high-order bit of the highest-order byte (bit 31) is interpreted as the sign bit. If the ToString(Int32, Int32) method is called to create a string that will later be converted back to a number, a corresponding method that assumes a similar numeric representation should be called to perform the conversion. Such methods include Convert.ToInt32(String, Int32) and Int32.Parse(String, NumberStyles).

The following example converts each element in an integer array to its equivalent binary, hexadecimal, decimal, and hexadecimal string representations.

int[] bases = { 2, 8, 10, 16};
int[] numbers = { Int32.MinValue, -19327543, -13621, -18, 12, 
                             19142, Int32.MaxValue };

foreach (int baseValue in bases)
{
   Console.WriteLine("Base {0} conversion:", baseValue);
   foreach (int number in numbers)
   {
      Console.WriteLine("   {0,-15}  -->  0x{1}", 
                        number, Convert.ToString(number, baseValue));
   }
}
// The example displays the following output: 
//    Base 2 conversion: 
//       -2147483648      -->  0x10000000000000000000000000000000 
//       -19327543        -->  0x11111110110110010001010111001001 
//       -13621           -->  0x11111111111111111100101011001011 
//       -18              -->  0x11111111111111111111111111101110 
//       12               -->  0x1100 
//       19142            -->  0x100101011000110 
//       2147483647       -->  0x1111111111111111111111111111111 
//    Base 8 conversion: 
//       -2147483648      -->  0x20000000000 
//       -19327543        -->  0x37666212711 
//       -13621           -->  0x37777745313 
//       -18              -->  0x37777777756 
//       12               -->  0x14 
//       19142            -->  0x45306 
//       2147483647       -->  0x17777777777 
//    Base 10 conversion: 
//       -2147483648      -->  0x-2147483648 
//       -19327543        -->  0x-19327543 
//       -13621           -->  0x-13621 
//       -18              -->  0x-18 
//       12               -->  0x12 
//       19142            -->  0x19142 
//       2147483647       -->  0x2147483647 
//    Base 16 conversion: 
//       -2147483648      -->  0x80000000 
//       -19327543        -->  0xfed915c9 
//       -13621           -->  0xffffcacb 
//       -18              -->  0xffffffee 
//       12               -->  0xc 
//       19142            -->  0x4ac6 
//       2147483647       -->  0x7fffffff       

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.