I have the same problem. I need to allow up to 12 digits, not counting the decimals. According to your statement regarding Double, it should work, but it doesn't.

I am able to type more than 9 characters into the editor if I set the Mask accordingly, but when I press Enter or focus away from the control, the value is lost if it contains more than 9 digits. Anything up to 9 digits, and the value is preserved in the cell. I am trying XamNumericEditor, XamCurrencyEditor, XamMaskEditor, as well as different data types (double, Int64, currency, etc.)... It makes no difference.

Here is my test control, which is part of a XamDataGrid. Any help will be very appreciated:

<ig:Field Name="Dollars" >
<ig:Field.Settings>
<ig:FieldSettings AllowEdit="True" EditAsType="{x:Type sys:Double}">
<ig:FieldSettings.EditorStyle>
<Style TargetType="{x:Type ig:XamCurrencyEditor}" >
<Setter Property="Mask" Value="{}{double:12.0}" />
<Setter Property="Format" Value="C0" />
</Style>
</ig:FieldSettings.EditorStyle>
</ig:FieldSettings>
</ig:Field.Settings>
</ig:Field>

Thanks for the reply and the sample project. I was able to run your project and get it to work, even in a XamDataGrid.

However when I am using the exact same approach in my project, the Mask does not work. I looked at the XamNumericEditor rendered by the datagrid using Snoop and compared it with your sample project and they are the exact same. I am really not sure what I am doing wrong here, I tried with different object model as well and different DataSource, same result... this is really weird. I can't send you the project as it is pretty big and it is our customer's project with copyright material.

I will post the solution if I even find it.

I am also looking for setting the Mask for XamNumericEditor to have more than 9 integer digits. Please let me know if anyone got the solution.

Thanks

I came across this thread and I still can't figure out how to allow the XamNumericEditor in a XamDataGrid to allow a number more than 1,999,999,999.99... Here is what I tried with no success:

<Setter Property="Mask" Value="nnn,nnn,nnn,nnn,nnn.nn" />
OR
<Setter Property="Mask" Value="{}{double:15.2}" />

The 2 solution above creates a mask with the correct number of prompt char but it is still not allowing me to enter more than 10 integer digits.

Anybody has a solution that allow me to enter say 234,567,890,123,456.12 ? Thanks.