System.Globalization Namespace   NumberFormatInfo Class

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Sets or retrieves the string that represents the IEEE NaN ( not a number ) value.

[ VB ]
public Property NaNSymbol As String

[ C# ]
public string NaNSymbol {get; set;}

[ C++ ]
public: __property String* get_NaNSymbol ( );
public: __property void set_NaNSymbol ( String* );

[ JScript ]
function get NaNSymbol ( ) : String;
public function set NaNSymbol ( String );

The string that represents the IEEE NaN ( not a number ) value. The default for InvariantInfo is "NaN".

Exception Type	Condition
ArgumentNullException	The property is being set to a null reference ( Nothing in Visual Basic ).
InvalidOperationException	The property is being set and the NumberFormatInfo is read-only.

For more information on NaN values, see Double or Single.

The below shows the NaNSymbol used for each of the available cultures.

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NumberFormatInfo Members   NumberDecimalDigits   NumberDecimalSeparator   NumberGroupSeparator   NumberGroupSizes   NumberNegativePattern   CurrencySymbol   PercentSymbol   PerMilleSymbol