Custom attribute in UserControl (*.ascx)?

Question

Supposing I have a user control like this

<MyTag:MyWidget runat="server" />

I am wondering if I can do something like

<MyTag:MyWidget runat="server" MemberHeight="400" PublicHeight="200" />

So that in MyWidget.ascx I can have

<div height="<%=IsLoggedIn ? MemberHeight : PublicHeight%>">

or something like that...? Because I want the height to vary in each page that is using this widget.

Have you tried it? It is possible to expose public properties in your UserControl that you can set like if it would be a standard property of UserControl(like Visible) in the aspx markup. These properties must be serializable(f.e. String or Integer). — Tim Schmelter, Mar 08 '11 at 23:15

score 36 · Accepted Answer · answered Mar 08 '11 at 23:14

36

Add a public property to the UserControl class something like...

 public int MySize { get; set; }

answered Mar 08 '11 at 23:14

Steve Wellens

1

This is the correct answer (though in your case, you'll add two properties named MemberHeight and PublicHeight). – Jacob Mar 08 '11 at 23:16
Seems it's not working if u declare the property as protected. do u know why? – fengd Apr 21 '11 at 19:34
@Jun1st - `protected` means that only extending classes can access that Property. In this case, it is a different page/control which needs to access the Property. – Jesse Webb Apr 17 '12 at 19:08
1

at what moment `MySize` property can be accessed, id it binds in aspx page? mean that in `UserControl.Page_Load` method property == null, so where can it be used? – Roar Jul 21 '14 at 12:50
@Roar Did you find the answer to this? – Kristopher Mar 28 '17 at 16:29
How do you add a custom property which will trigger a file selector once used within the aspx markup (just like src attribute for image tags, etc.) ? – Ishikawa Dec 22 '20 at 11:37

score 16 · Answer 2 · edited Mar 04 '13 at 13:20

16

You need to define public properties for both items, as such:

public int MemberHeight{ get; set; }
public int PublicHeight{ get; set; }

edited Mar 04 '13 at 13:20

answered Mar 08 '11 at 23:16

longhairedsi

2 Answers2