NumberFormatInfo.NumberDecimalSeparator Property


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

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

member NumberDecimalSeparator : string with get, set

Property Value

Type: System.String

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

Exception Condition

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 NumberDecimalSeparator property is used with the "E", "F", "G", "N", and "R" standard format strings to define the symbol that separates integral from fractional digits. 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 NumberDecimalSeparator property.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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