I have a field
<TextBox x:Name="TbTotalICMS" Style="{StaticResource MeuTextBoxValor}" Text="{Binding Vicms}" />
My Vicms is a decimal. When pressing the TAB key, the value is 1.00 (example) it turns 100. For as it is a decimal in English it takes the comma and exchange by point. I need that by pressing the TAB it continues like this.
I solved this by putting a ConverterCulture!
<TextBox x:Name="TbTotalICMS" Style="{StaticResource MeuTextBoxValor}" Text="{Binding Vicms, ConverterCulture='pt-BR'}" />
In the event of LostFocus there is always the possibility to convert / force the value to the format we want:
NumberFormatInfo numberFormatInfo = new NumberFormatInfo();
// número de casas decimais
numberFormatInfo.NumberDecimalDigits = 2;
// separador de casas decimais
numberFormatInfo.NumberDecimalSeparator = ",";
// separador de milhares
numberFormatInfo.NumberGroupSeparator = ".";
string value = DoubleValue.ToString("N", numberFormatInfo);