Int32.ToString Method (String)
Converts the numeric value of this instance to its equivalent string representation, using the specified format.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- format
-
Type:
System.String
A standard or custom numeric format string.
Return Value
Type: System.StringThe string representation of the value of this instance as specified by format.
| Exception | Condition |
|---|---|
| FormatException | format is invalid or not supported. |
The ToString(String) method formats an Int32 value in a specified format by using a NumberFormatInfo object that represents the conventions of the current culture. If you want to use the default ("G", or general) format or specify a different culture, use the other overloads of the ToString method, as follows:
To use format | For culture | Use the overload |
|---|---|---|
Default ("G") format | Default (current) culture | |
Default ("G") format | A specific culture | |
A specific format | A specific culture |
The format parameter can be any valid standard numeric format specifier except for "R", as well as any combination of custom numeric format specifiers. If format is null or an empty string (""), the return value of this instance is formatted with the general numeric format specifier ("G").
The .NET Framework provides extensive formatting support, which is described in greater detail in the following formatting topics:
For more information about numeric format specifiers, see Standard Numeric Format Strings and Custom Numeric Format Strings.
For more information about formatting, see Formatting Types in the .NET Framework.
The return value of this instance is formatted with the NumberFormatInfo for the current culture.
The following example displays an Int32 value using each of the supported standard numeric format specifiers, together with two custom numeric format strings. In converting the numeric values to strings, the example uses the formatting conventions of the en-US culture.
int value = -16325; string specifier; // Use standard numeric format specifier. specifier = "G"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: G: -16325 specifier = "C"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: C: ($16,325.00) specifier = "D8"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: D8: -00016325 specifier = "E4"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: E4: -1.6325E+004 specifier = "e3"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: e3: -1.633e+004 specifier = "F"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: F: -16325.00 specifier = "N"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: N: -16,325.00 specifier = "P"; Console.WriteLine("{0}: {1}", specifier, (value/100000).ToString(specifier)); // Displays: P: -16.33 % specifier = "X"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: X: FFFFC03B // Use custom numeric format specifiers. specifier = "0,0.000"; Console.WriteLine("{0}: {1}", specifier, value.ToString(specifier)); // Displays: 0,0.000: -16,325.000 specifier = "#,#.00#;(#,#.00#)"; Console.WriteLine("{0}: {1}", specifier, (value*-1).ToString(specifier)); // Displays: #,#.00#;(#,#.00#): 16,325.00
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1