GettextFormatConverter does not support DisplayFormat

[Jogge]

I'm trying to bind to this property with the GettextFormatConverter:

[DisplayFormat(DataFormatString = "d")]
public DateTime Date { get; set; }

<TextBlock Text="{Binding Date, Mode=OneWay, Converter={wpf:GettextFormatConverter Date: {0}}}" />

Expected result: Date: 11-03-2019

Result: Date: 11-03-2019 00:00:00

[robert-j-engdahl]

Setting the StringFormat twice, once in the attribute and again in the GettextFormatConverter is ambiguous.

On the other hand, the attribute approach enables DRY, so no format specification should mean fall back to the DisplayAttribute, but a given format specification would override that.

<TextBlock Text="{Binding Date, Converter={wpf:GettextFormatConverter Date: {0}}}" />

formats Date according to the DisplayFormat attribute and

<TextBlock Text="{Binding Date, Converter={wpf:GettextFormatConverter Date: {0:g}}}" />

formats the Date with the given g