NumberFormatInfo.NumberDecimalSeparator Property

Gets or sets the string to use as the decimal separator in numeric values.

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

public string NumberDecimalSeparator { get; set; }

Property Value

Type: System.String
The string to use as the decimal separator in numeric values. The default for InvariantInfo is ".".


The property is being set to null.


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


The property is being set to an empty string.

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

using System;
using System.Globalization;

class Example

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)

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

      // Displays a value with the default separator (".").
      Int64 myInt = 123456789;
      outputBlock.Text += String.Format(myInt.ToString("N", nfi)) + "\n";

      // Displays the same value with a blank as the separator.
      nfi.NumberDecimalSeparator = " ";
      outputBlock.Text += String.Format(myInt.ToString("N", nfi)) + "\n";


This code produces the following output.

123,456,789 00

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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