Add '&' to WPF TextBox

Question

I have a WPF form, for some reason ONLY '&' character within string cannot be compiled with.

<TextBox>=948&showtree=1</TextBox> <!--Error due to char &-->

I have tried:<TextBox Text = @"=948&showtree=1"/> yet, same result.

I have tried adding "!@#$%^*()_+" it also only happens with '&'. What is so special about '&' and how to overcome this problem within xaml?

I could add it in .cs file but I want to know why did this occurred.

XML is the same no matter which .NET version. Read about special characters in XML. — Thorsten Dittmar, Jul 29 '15 at 08:36

PaulF · Answer 1 · 2015-07-29T08:37:48.590

2

The ampersand is a special character preceding other codes in XML - to use one you need to use the code for an ampersand which is &

<TextBox>=948&amp;showtree=1</TextBox>

edited Jul 29 '15 at 08:37

answered Jul 29 '15 at 08:36

PaulF

6,673
2
18
29

Thorsten Dittmar · Accepted Answer · 2015-07-29T08:44:28.167

2

& is a special character in XML, which needs to be specified as &, just like < for < and > for >.

So your line should read:

<TextBox>=948&amp;showtree=1</TextBox>

For more information on special characters in XML you can read this: http://xml.silmaril.ie/specials.html

edited Jul 29 '15 at 08:44

answered Jul 29 '15 at 08:36

Thorsten Dittmar

55,956
8
91
139

I came across &amp but typed it without ; at end. Thanks for quick reply. – Jul 29 '15 at 08:38

score 1 · Answer 3 · edited May 23 '17 at 12:29

1

You need to encode the ampersand.

Have you tried & ?

See How do I escape ampersands in XML so they are rendered as entities in HTML?

edited May 23 '17 at 12:29

Community

1
1

answered Jul 29 '15 at 08:35

Anemoia

7,928
7
46
71

Add '&' to WPF TextBox

3 Answers3