Pass variable to UserControl

I try to pass Package variable to my UserControl:

<uc:Template ID="Template" runat="server" Package="<%=TemplateParams.SimpleSearch %>" />

but with no luck - in UC it gives me <%=TemplateParams.SimpleSearch %> string instead of SimpleSearch parameter from TemplateParams class.

How to do this ?

Edit:

About code behind way I know - I wou开发者_如何转开发ld like to know how to do it from view.

In the user control that holds the property you're attempting to expose you can set the BrowsableAttribute attribute:

[BrowsableAttribute(true)]
public string myProperty { get; set; }

This should expose it in the xml version of the control.

Edit
If your TemplateParams.SimpleSearch is a string, then you should be able to do the following:

Package='<%=TemplateParams.SimpleSearch%>'

The ' makes the difference here. If it is an object, you'll have to do it in the code behind.

From code behind you can pass variable or set properties

Template.variable="foo";

Page.FindControl("Template").Attributes.Add("Package", "YourValueGoesHere");

An alternative, if you really want to do it in the markup is to use an expression builder

we use this one for lots of similar tasks

This will allow you to write code like

<uc:Template ID="Template" runat="server" Package="<%$ Code : TemplateParams.SimpleSearch %>" />