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Posted 6 Jun 2012

WPF DatePicker Background Fix

, 6 Jun 2012
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A little trick that will more completely fill the DatePicker background from the code-behind.

WPF DatePicker Background Fix

There is an interesting issue with the DatePicker, and that is, for whatever reason Microsoft had, when you set the Background of the control, it only partially sets the Background. The center of the DatePicker remains a color of white. Not exactly what one would expect. Below is a picture, the top one is probably closer to what you would expect if you set the background to a gold color, the second textbox is what you actually get when you set the background to a gray.

The XAML for these controls looks like the following:

<DatePicker Name="datePicker1" Background="#FFC000"/>
<DatePicker Name="datePicker2" Background="#A6A6A6" />

I found a little trick that will more completely fill the background from the code-behind. In the constructor of the code-behind, I added the following code for the first DatePicker control:

datePicker1.Loaded += delegate
    var textBox1 = (TextBox)datePicker1.Template.FindName("PART_TextBox", datePicker1);
    textBox1.Background = datePicker1.Background;


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Clifford Nelson
Software Developer (Senior) Clifford Nelson Consulting
United States United States
Has been working as a C# developer on contract for the last several years, including 3 years at Microsoft. Previously worked with Visual Basic and Microsoft Access VBA, and have developed code for Word, Excel and Outlook. Started working with WPF in 2007 when part of the Microsoft WPF team. For the last eight years has been working primarily as a senior WPF/C# and Silverlight/C# developer. Currently working as WPF developer with BioNano Genomics in San Diego, CA redesigning their UI for their camera system. he can be reached at

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