C# Signature:
[DllImport("kernel32.dll")]
static extern int GetCurrencyFormat(uint Locale, uint dwFlags, string lpValue,
[In, MarshalAs(UnmanagedType.LPStruct)] lpFormat, IntPtr lpCurrencyStr, int cchCurrency);
User-Defined Types:
C# User-Defined Types
[StructLayout(LayoutKind.Sequential)]
public class CURRENCYFMT
{
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 uiNumDigits;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 uiLeadingZero;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 uiGrouping;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
public String lpDecimalSep;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
public String lpThousandSep;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 uiNegativeOrder;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.U4)]
public UInt32 uiPositiveOrder;
[MarshalAs(System.Runtime.InteropServices.UnmanagedType.LPWStr)]
public String lpCurrencySymbol;
};
Notes:
uiLeadingZero - If there is only a fractional part, is a zero placed in front of the decimal.
0 => False - Don't show the leading zero.
1 => True - Show the leading zero.
uiPositiveOrder - How to format the currency if it is positive
0 => $###.##
1 => ###.##$
2 => $ ###.##
3 => ###.## $
uiNegativeOrder - How to format the currency if it is negative
0 => ($###.##)
1 => -$###.##
2 => $-###.##
3 => $###.##-
4 => (###.##$)
5 => -###.##$
6 => ###.##-$
7 => ###.##$-
8 => -###.## $
9 => -$ ###.##
10 => ###.## $-
11 => $ ###.##-
12 => $ -###.##
13 => ###.##- $
14 => ($ ###.##)
15 => (###.## $)
Tips & Tricks:
Please add some!
Sample Code:
C# Example 1
/// <summary>
/// Will convert a decimal to the specified currency format.
/// </summary>
/// <param name="numberToConvert">Must be a decimal number with no formatting. If there is formatting
/// on the number, it should be removed before calling this function.</param>
/// <returns>Null if there is an error, otherwise the number formatted as currency.</returns>
public string ConvertDecimalToCurrency(Decimal numberToConvert, CURRENCYFMT currencyFormat)
{
String sCurrency = null;
long lRet = 0;
//Find out the size of the converted string..
lRet = GetCurrencyFormat(0, 0, numberToConvert.ToString(), currencyFormat, IntPtr.Zero, 0);
if (0 != lRet)
{
//Get the formatted currency string
IntPtr ptrCurrencyStr = Marshal.AllocHGlobal((int)lRet);
lRet = GetCurrencyFormat(0, 0, numberToConvert.ToString(), currencyFormat, ptrCurrencyStr, (int)lRet);
sCurrency = 0 == lRet ? null : Marshal.PtrToStringUni(ptrCurrencyStr);
Marshal.FreeHGlobal(ptrCurrencyStr);
}
else
{
//Shouldn't be here, we should have received the size of the converted string.
//See the error code that was returned.
int error = Marshal.GetLastWin32Error();
Trace.WriteLine("Error converting decimal to currency. Error Number: " + error.ToString());
}
return sCurrency;
}
private void cmdTest_Click(object sender, EventArgs e)
{
//Setup how the currency is going to be formatted.
CURRENCYFMT currencyFormat = new CURRENCYFMT();
currencyFormat.uiGrouping = Convert.ToUInt32(txtGrouping.Text);
currencyFormat.uiLeadingZero = Convert.ToUInt32(cboLeadingZero.SelectedIndex);
currencyFormat.lpCurrencySymbol = txtCurrencySymbol.Text;
currencyFormat.lpDecimalSep = txtDecimalSep.Text;
currencyFormat.lpThousandSep = txtThousandSep.Text;
currencyFormat.uiNegativeOrder = Convert.ToUInt32(cboNegativeOrder.SelectedIndex);
currencyFormat.uiNumDigits = Convert.ToUInt32(txtNumDigits.Text);
currencyFormat.uiPositiveOrder = Convert.ToUInt32(cboPositiveOrder.SelectedIndex);
txtConverted.Text = ConvertDecimalToCurrency(Convert.ToDecimal(txtConvert.Text), currencyFormat);
}
Alternative Managed API:
You may be able to use this, I don't know how much customization you can get from it.
Look at this link: http://msdn.microsoft.com/en-us/goglobal/bb688126.aspx
Decimal n = 100.53m;
string sFormatted = n.ToString("C");
