NumberFormatInfo.NumberGroupSeparator Property

Gets or sets the string that separates groups of digits to the left of the decimal in numeric values.

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

public string NumberGroupSeparator { get; set; }

Property Value

Type: System.String
The string that separates groups of digits to the left of the decimal in numeric values. The default for InvariantInfo is ",".

ExceptionCondition
ArgumentNullException

The property is being set to null.

InvalidOperationException

The property is being set and the NumberFormatInfo object is read-only.

The NumberGroupSeparator property is used with the "N" standard format string to define the symbol that separates groups of integers. For more information, see Standard Numeric Format Strings.

The initial value of this property is derived from the settings in the Region and Language item in Control Panel.

The following example demonstrates the effect of changing the NumberGroupSeparator property.

using System;
using System.Globalization;

class NumberFormatInfoSample {

   public static void Main() {

      // Gets a NumberFormatInfo associated with the en-US culture.
      NumberFormatInfo nfi = new CultureInfo( "en-US", false ).NumberFormat;

      // Displays a value with the default separator (",").
      Int64 myInt = 123456789;
      Console.WriteLine( myInt.ToString( "N", nfi ) );

      // Displays the same value with a blank as the separator.
      nfi.NumberGroupSeparator = " ";
      Console.WriteLine( myInt.ToString( "N", nfi ) );

   }
}


/* 
This code produces the following output.

123,456,789.00
123 456 789.00
*/
   

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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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