Custom DateTime stringformat in WPF

Question

I can't get my custom DateTime string format to work in my binding. I want the format to be "mmmm, yyyy" (e.g. "June, 2012").

The following does not work. I get a short date format (m/d/yyyy).

<TextBlock Text="{Binding ElementName=ThisWindow,
                          Path=Date,
                          StringFormat={}{0:MMMM\, yyyy}"/>

I've considered using a converter, but I prefer a pure XAML approach.

Edit:

For clarity, I have a Window with a dependency property Date of type DateTime. In my XAML, I've named the window 'Thiswindow'.

Edit 2:

I looked back at my actual code, and I had a Label, not a TextBlock. I changed it to TextBlock and it works fine.

<Label Content="{Binding ElementName=ThisWindow,
                 Path=Date,
                 StringFormat={}{0:MMMM\, yyyy}"/>

Anyone know why it doesn't work with Label?

Thanks.

This worked for me (except it should be {0:MMMM\, yyyy}). Something about your "Date" property? Is it by chance returning a string instead of a DateTime? — CodingGorilla
– CodingGorilla, Commented Jun 8, 2012 at 16:55

brunnerh · Accepted Answer · 2012-06-08 17:15:16Z

12

ContentControls have a ContentStringFormat property which overrides the original formatting.

(When i saw your question i expected this to be the problem actually but was surprised to find a TextBlock at first)

answered Jun 8, 2012 at 17:15

brunnerh

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Comments

Trevor Elliott · Accepted Answer · 2012-06-08 17:02:20Z

2

Your month needs to be in uppercase:

{Binding Source={x:Static sys:DateTime.Now}, StringFormat={}{0:MMMM\, yyyy}}

EDIT:

The Label problem is probably because Label has Content, not Text.

Change the Text="{Binding ...}" to Content="{Binding ...}"

answered Jun 8, 2012 at 17:02

Trevor Elliott

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I had it as a Content property when it was a Label, and it wasn't working.