ASPxTextBox - How to dynamically change the currency mask based on the selected culture

Hello Kanagu,

We thoroughly researched the problematic behavior. There are two issues in the project that prevent it from proper operation.

1. The Decimal.Parse method always throws an error. It is required to use the Decimal.Parse Method (String, NumberStyles, IFormatProvider) overload of the method because of the currency settings.
2. Mask settings are not initialized with the required culture settings. The mask with <0…9999g> doesn't work  properly, because it automatically gets the group separator from the culture settings of the page (see the Mask Types documentation article).Since our ASP.NET editors don't provide the capability to set a mask based on CultureInfo at the moment, it is not possible to adjust the mask to work with culture settings different from the current page culture. We completely understand the importance of this behavior, especially in XAF projects, where desktop and web behavior should be similar. So we will take this case into account when planning future improvements of our editors.

For now,  the only possible solution is to build a mask manually using the required culture's separators. I suggest  that you use the following mask:

C#
DecimalPropertyEditor.MaskSettings.Mask = String.Format("{0}<99{4}999>{3}<{1}..{2}>", CurrentCulture.NumberFormat.CurrencySymbol,  
new String('0', CurrentCulture.NumberFormat.CurrencyDecimalDigits),  
new String('9', CurrentCulture.NumberFormat.CurrencyDecimalDigits),  
CurrentCulture.NumberFormat.CurrencyDecimalSeparator,CurrentCulture.NumberFormat.CurrencyGroupSeparator);  

While it does not follow the WinForms editors' behavior completely, it should operate fine.
In addition, it is necessary to slightly adjust the value parsing logic and remove the whitespace characters from the mask:

C#
if(CurrentCulture != null) {  
    var emptyMask = String.Format("{0}  {3}   {2}{1}", CurrentCulture.NumberFormat.CurrencySymbol,  
            new String('0', CurrentCulture.NumberFormat.CurrencyDecimalDigits),  
            CurrentCulture.NumberFormat.CurrencyDecimalSeparator, CurrentCulture.NumberFormat.CurrencyGroupSeparator);  
    if(InputString == emptyMask)  
        InputString = string.Format("0{0}00", CurrentCulture.NumberFormat.CurrencyDecimalSeparator);  
    InputString = InputString.Replace(" ", "");  

    decimalValue = Decimal.Parse(InputString, NumberStyles.Currency, CurrentCulture.NumberFormat);  
}  

Also, remove the following lines:

C#
((ASPxTextBox)Editor).Text= ((decimal)PropertyValue).ToString("C", CurrentCulture);  
...  
((ASPxTextBox)InplaceViewModeEditor).Text = ((decimal)DecimalPropertyEditor.Value).ToString("C", CurrentCulture);  

I've implemented these changes in your project and attached it for your reference with a video illustrating the result. If you have further questions, feel free to contact us.

Updated:

It is not possible to use the ToString method in your case. To resolve the issue, I suggest you perform the following steps:

1. Change a mask to the following one to prevent changing separators and the currency symbol to incorrect:

C#
DecimalPropertyEditor.MaskSettings.Mask = String.Format("\\{0}<99\\{4}999>\\{3}<{1}..{2}>", CurrentCulture.NumberFormat.CurrencySymbol,  
   new String('0', CurrentCulture.NumberFormat.CurrencyDecimalDigits), new String('9', CurrentCulture.NumberFormat.CurrencyDecimalDigits),  
   CurrentCulture.NumberFormat.CurrencyDecimalSeparator, CurrentCulture.NumberFormat.CurrencyGroupSeparator);  

2. Change the GetControlValueCore as it is shown to prevent mask reading errors:

C#
protected override object GetControlValueCore() {  
    decimal decimalValue = 0;  
    string InputString = ((ASPxTextBox)Editor).Value as string;  
    if(CurrentCulture != null) {  
        var emptyMask = String.Format("{0}  {3}   {2}{1}", CurrentCulture.NumberFormat.CurrencySymbol,  
                   new String('0', CurrentCulture.NumberFormat.CurrencyDecimalDigits), CurrentCulture.NumberFormat.CurrencyDecimalSeparator,  
                   CurrentCulture.NumberFormat.CurrencyGroupSeparator);  
        if(InputString == emptyMask)  
            InputString = string.Format("0{0}00", CurrentCulture.NumberFormat.CurrencyDecimalSeparator);  
        InputString = InputString.Replace(" ", "");  
        if(InputString.Replace(CurrentCulture.NumberFormat.CurrencySymbol, "").IndexOf(CurrentCulture.NumberFormat.CurrencyGroupSeparator) == 0)  
            InputString = CurrentCulture.NumberFormat.CurrencySymbol + InputString.Replace(CurrentCulture.NumberFormat.CurrencySymbol, "")  
                                      .Replace(CurrentCulture.NumberFormat.CurrencyGroupSeparator, "");  
         decimalValue = Decimal.Parse(InputString, NumberStyles.Currency, CurrentCulture.NumberFormat);  
    }  
    return decimalValue;  
}  

3. Call the SetValueToEditor method from the ReadViewModeValueCore  and ReadEditModeValueCore methods to force the editor to show a correct value:

C#
void SetValueToEditor(ASPxTextBox txt) {  
    txt.Value = string.Format("{0:0.00}", PropertyValue);  
     if(CurrentCulture != null) {  
        txt.Text = string.Format("{0:0.00}", PropertyValue);  
        var maskLength = 8;  
        var length = maskLength - txt.Text.Length;  
        txt.Value = new string('_', length) + txt.Value;  
    }  
}