ansaurus

Question

How can I expose a repeater's templates from another control that contains the repeater?

Answer 1

+1 A:

Hey,

Sounds like more of a custom control (not custom user control) to me... but that might add a lot of complexity... you could try to expose ChildRepeaterItemTemplate as a property, then programmably set the template on each child item when data binding... that might work.

HTH.

Brian 2010-09-30 15:39:59

That was the approach I tried, but wasn't able to access the repeater's data from the templates that way.

Rudism 2010-10-02 16:42:39

Answer 2

+1 A:

Like Brian says, you need a custom control, but if you had that, you could expose the ItemTemplates.

namespace MyControls
{
    public class MyControl : System.Web.UI.WebControls.WebControl
    {
        System.Web.UI.WebControls.Repeater FirstRepeater = new System.Web.UI.WebControls.Repeater();
        System.Web.UI.WebControls.Repeater SecondRepeater = new System.Web.UI.WebControls.Repeater();

        [System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
        public System.Web.UI.ITemplate FirstTemplate
        {
            get
            {
                return FirstRepeater.ItemTemplate;
            }
            set
            {
                FirstRepeater.ItemTemplate = value;
            }
        }

        [System.Web.UI.PersistenceMode(System.Web.UI.PersistenceMode.InnerProperty)]
        public System.Web.UI.ITemplate SecondTemplate
        {
            get
            {
                return SecondRepeater.ItemTemplate;
            }
            set
            {
                SecondRepeater.ItemTemplate = value;
            }
        }

        protected override void CreateChildControls()
        {
            base.Controls.Add(FirstRepeater);
            object[] FirstDataSource = {
                new { x = "1" },
                new { x = "2" },
                new { x = "3" },
                new { x = "4" }
            };
            FirstRepeater.DataSource = FirstDataSource;
            FirstRepeater.DataBind();

            base.Controls.Add(SecondRepeater);
            object[] SecondDataSource = {
                new { y = "a" },
                new { y = "b" },
                new { y = "c" },
                new { y = "d" }
            };
            SecondRepeater.DataSource = SecondDataSource;
            SecondRepeater.DataBind();

            base.CreateChildControls();
        }
    }
}

You need to instantiate your child repeaters before the control that includes this one tries to assign them. This sample creates two child repeaters inside the control and binds them to some dummy data.

And with a page that uses this control:

<%@ Page %>

<%@ Register Namespace="MyControls" TagPrefix="mc" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
<html xmlns="http://www.w3.org/1999/xhtml"&gt;
<head runat="server">
    <title></title>
</head>
<body>
    <form runat="server">
    <div>
        <mc:MyControl runat="server">
            <FirstTemplate>
                <div style="color: blue">
                    <%# Eval("x")%>
                </div>
            </FirstTemplate>
            <SecondTemplate>
                <div style="color: red">
                    <%# Eval("y")%>
                </div>
            </SecondTemplate>
        </mc:MyControl>
    </div>
    </form>
</body>
</html>

You get the following output:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; 
<html xmlns="http://www.w3.org/1999/xhtml"&gt; 
<head><title> 

</title></head> 
<body> 
    <form method="post" action="" id="ctl01"> 
<div class="aspNetHidden"> 
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTEwMjEyMzEwMzcPZBYCAgMPZBYCAgEPZBYEZg8WAh4LXyFJdGVtQ291bnQCBBYIZg9kFgJmDxUBATFkAgEPZBYCZg8VAQEyZAICD2QWAmYPFQEBM2QCAw9kFgJmDxUBATRkAgEPFgIfAAIEFghmD2QWAmYPFQEBMmQCAQ9kFgJmDxUBAWJkAgIPZBYCZg8VAQFjZAIDD2QWAmYPFQEBZGRk7v0uzzMp0h89eUJash2eToIH2EboQLSZWnkVYXRsGpM=" /> 
</div> 

    <div> 
        <span> 
                <div style="color: blue"> 
                    1
                </div> 

                <div style="color: blue"> 
                    2
                </div> 

                <div style="color: blue"> 
                    3
                </div> 

                <div style="color: blue"> 
                    4
                </div> 

                <div style="color: red"> 
                    a
                </div> 

                <div style="color: red"> 
                    b
                </div> 

                <div style="color: red"> 
                    c
                </div> 

                <div style="color: red"> 
                    d
                </div> 
            </span> 
    </div> 
    </form> 
</body> 
</html>

langsamu 2010-09-30 16:29:02

ansaurus

tags:

views:

answers:

How can I expose a repeater's templates from another control that contains the repeater?

related questions