Passing parameter to XSLT function in user control

Question

In Composite C1, how can I pass a parameter to a C1 function that is rendered within a Webforms user control?

In my case, I want to include the SimpleSearch results in my user control:

<rendering:Function runat="server" id="fnSimpleSearch" >
    <f:function xmlns:f="http://www.composite.net/ns/function/1.0" name="Composite.Search.SimplePageSearch.SearchResults">      
        <f:param name="SearchQuery" value="<%= SearchTerm %>" /> 
        <f:param name="CurrentSite" value="False" /> 
        <f:param name="PageSize" value="10" /> 
        <f:param name="ShowSearchForm" value="True" />      
    </f:function> 
</rendering:Function>

This is the CodeBehind:

public string SearchTerm { get; set; }

protected override void OnLoad(EventArgs e)
{
    C1PageRoute.RegisterPathInfoUsage();
    string pathInfo = C1PageRoute.GetPathInfo();
    if(!string.IsNullOrWhiteSpace(pathInfo))
    {
        SearchTerm = pathInfo.Substring(1);
    }

    base.OnLoad(e);
}

If I do it this way, the function will not be rendered in the final page, instead just the markup is rendered. If I put a static value in for the SearchQuery parameter, it is rendered though.

How do I pass the SearchQuery parameter from my CodeBehind so that the function will be rendered correctly?

Answer 1

You can do two things

1. Use databinding syntax so the SearchQuery param looks like this instead <f:param name="SearchQuery" value="<%# SearchTerm %>" />

2. Pass the parameter in CodeBehind. This is usually the easiest and enables you to pass all kinds of complex objects

   fnSimpleSearch.Parameters.Add(new Param("SearchQuery", SearchTerm));