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NumberFormatInfo.NumberGroupSizes Property

Gets or sets the number of digits in each group to the left of the decimal in numeric values.

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

public:
property array<int>^ NumberGroupSizes {
	array<int>^ get ();
	void set (array<int>^ value);
}
/** @property */
public int[] get_NumberGroupSizes ()

/** @property */
public void set_NumberGroupSizes (int[] value)

public function get NumberGroupSizes () : int[]

public function set NumberGroupSizes (value : int[])

Not applicable.

Property Value

The number of digits in each group to the left of the decimal in numeric values. The default for InvariantInfo is a one-dimensional array with only one element, which is set to 3.

Exception typeCondition

ArgumentNullException

The property is being set to a null reference (Nothing in Visual Basic).

ArgumentException

The property is being set and the array contains an entry that is less than 0 or greater than 9.

-or-

The property is being set and the array contains an entry, other than the last entry, that is set to 0.

InvalidOperationException

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

Every element in the one-dimensional array must be an integer from 1 through 9. The last element can be 0.

The first element of the array defines the number of elements in the least significant group of digits immediately to the left of the NumberDecimalSeparator. Each subsequent element refers to the next significant group of digits to the left of the previous group. If the last element of the array is not 0, the remaining digits are grouped based on the last element of the array. If the last element is 0, the remaining digits are not grouped.

For example, if the array contains { 3, 4, 5 }, the digits are grouped similar to "55,55555,55555,55555,4444,333.00". If the array contains { 3, 4, 0 }, the digits are grouped similar to "55555555555555555,4444,333.00".

The following code example demonstrates the effect of changing the NumberGroupSizes property.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Gets a NumberFormatInfo associated with the en-US culture.
   CultureInfo^ MyCI = gcnew CultureInfo( "en-US",false );
   NumberFormatInfo^ nfi = MyCI->NumberFormat;
   
   // Displays a value with the default separator (S".").
   Int64 myInt = 123456789012345;
   Console::WriteLine( myInt.ToString( "N", nfi ) );
   
   // Displays the same value with different groupings.
   array<Int32>^mySizes1 = {2,3,4};
   array<Int32>^mySizes2 = {2,3,0};
   nfi->NumberGroupSizes = mySizes1;
   Console::WriteLine( myInt.ToString( "N", nfi ) );
   nfi->NumberGroupSizes = mySizes2;
   Console::WriteLine( myInt.ToString( "N", nfi ) );
}

/*
This code produces the following output.
123, 456, 789, 012, 345.00
12, 3456, 7890, 123, 45.00
1234567890, 123, 45.00
*/

import System.*;
import System.Globalization.*;

class NumberFormatInfoSample
{
    public static void main(String[] args)
    {
        // Gets a NumberFormatInfo associated with the en-US culture.
        NumberFormatInfo nfi = 
            (new CultureInfo("en-US", false)).get_NumberFormat();
        // Displays a value with the default separator (".").
        Int64 myInt = (Int64)(123456789012345L);
        Console.WriteLine(myInt.ToString("N", nfi));
        // Displays the same value with different groupings.
        int mySizes1[] =  { 2, 3, 4 };
        int mySizes2[] =  { 2, 3, 0 };
        nfi.set_NumberGroupSizes(mySizes1);
        Console.WriteLine(myInt.ToString("N", nfi));
        nfi.set_NumberGroupSizes(mySizes2);
        Console.WriteLine(myInt.ToString("N", nfi));
    } //main 
} //NumberFormatInfoSample

/* 
This code produces the following output.

123,456,789,012,345.00
12,3456,7890,123,45.00
1234567890,123,45.00
*/


The following code example prints a value using different NumberGroupSizes arrays.

using namespace System;
using namespace System::Globalization;
String^ PrintArraySet( array<Int32>^myArr )
{
   String^ myStr = nullptr;
   myStr = myArr[ 0 ].ToString();
   for ( int i = 1; i < myArr->Length; i++ )
      myStr = String::Concat( myStr, ", ", myArr[ i ].ToString() );
   return myStr;
}

int main()
{
   
   // Creates a new NumberFormatinfo.
   NumberFormatInfo^ myNfi = gcnew NumberFormatInfo;
   
   // Takes a long value.
   Int64 myInt = 123456789012345;
   
   // Displays the value with default formatting.
   Console::WriteLine( "Default  \t\t:\t{0}", myInt.ToString( "N", myNfi ) );
   
   // Displays the value with three elements in the GroupSize array.
   array<Int32>^newInts1 = {2,3,4};
   myNfi->NumberGroupSizes = newInts1;
   Console::WriteLine( "Grouping ( {0} )\t:\t{1}", PrintArraySet( myNfi->NumberGroupSizes ), myInt.ToString( "N", myNfi ) );
   
   // Displays the value with zero as the last element in the GroupSize array.
   array<Int32>^newInts2 = {2,4,0};
   myNfi->NumberGroupSizes = newInts2;
   Console::WriteLine( "Grouping ( {0} )\t:\t{1}", PrintArraySet( myNfi->NumberGroupSizes ), myInt.ToString( "N", myNfi ) );
}

/*
This code produces the following output. 

Default               :       123, 456, 789, 012, 345.00
Grouping (2, 3, 4)    :       12, 3456, 7890, 123, 45.00
Grouping (2, 4, 0)    :       123456789, 0123, 45.00
*/

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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