Programatically Databinding controls within a Repeater

16 Feb 2006 3:14 PM

dcew

If I have a Repeater control which contains one ItemTemplate, which in turn
contains one HyperLink control, is there anyway I can set that Hyperlink
controls .Text and .NavigateUrl datasource values in the codebehind as
opposed to using NavigateUrl='<%# Eval("URL") %>' style syntax in the .aspx?

Hope that makes sense.

16 Feb 2006 4:28 PM

Phillip Williams

Write a method to handle the ItemDataBound event of the Repeater control in
which you get a reference to the HyperLink using the FindControl method and
then you can change any of the properties of the hyperlink based on the
DataItem. For example in VB you would wite:

Protected Sub repeater1_ItemDataBound(ByVal sender As System.Object, ByVal e
As RepeaterItemEventArgs) Handles repeater1.ItemDataBound
        If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType =
ListItemType.AlternatingItem Then
            'this line gets you the underlying data row view (if you used a
datatable as
            'the datasource for the repeater).
            Dim drv As DataRowView = CType(e.Item.DataItem, DataRowView)
            'assuming that you gave the hyperlink an id="HyperLink1"
            Dim hlHyperlink1 As HyperLink =
CType(e.Item.FindControl("HyperLink1"), HyperLink)
            'assuming you have a field named Text in your dataTable
            hlHyperlink1.Text = drv("Text")
            'assuming you have a field named Url in your datatable
            hlHyperlink1.NavigateUrl = drv("Url")
        End If
    End Sub

--
HTH,
Phillip Williams
http://www.societopia.net
http://www.webswapp.com

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"dcew" wrote:

> If I have a Repeater control which contains one ItemTemplate, which in turn
> contains one HyperLink control, is there anyway I can set that Hyperlink
> controls .Text and .NavigateUrl datasource values in the codebehind as
> opposed to using NavigateUrl='<%# Eval("URL") %>' style syntax in the .aspx?
>
> Hope that makes sense.

17 Feb 2006 1:42 PM

dcew

That's exactly what I was looking for!

Here's the c# code if anyone's interested (using a custom MyHyperLink object
as the datasource):

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
   {
      if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType ==
ListItemType.AlternatingItem)
      {
         MyHyperLink mhl = (MyHyperLink)e.Item.DataItem;
         HyperLink hyperLink = (HyperLink)e.Item.FindControl("navHyperLink");

         hyperLink.Text = mhl.DisplayLink;
         hyperLink.NavigateUrl = mhl.NavLink;
      }
   }

Thanks,
dcew.

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"Phillip Williams" wrote:

> Write a method to handle the ItemDataBound event of the Repeater control in
> which you get a reference to the HyperLink using the FindControl method and
> then you can change any of the properties of the hyperlink based on the
> DataItem. For example in VB you would wite:
>
> Protected Sub repeater1_ItemDataBound(ByVal sender As System.Object, ByVal e
> As RepeaterItemEventArgs) Handles repeater1.ItemDataBound
>         If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType =
> ListItemType.AlternatingItem Then
>             'this line gets you the underlying data row view (if you used a
> datatable as
>             'the datasource for the repeater).
>             Dim drv As DataRowView = CType(e.Item.DataItem, DataRowView)
>             'assuming that you gave the hyperlink an id="HyperLink1"
>             Dim hlHyperlink1 As HyperLink =
> CType(e.Item.FindControl("HyperLink1"), HyperLink)
>             'assuming you have a field named Text in your dataTable
>             hlHyperlink1.Text = drv("Text")
>             'assuming you have a field named Url in your datatable
>             hlHyperlink1.NavigateUrl = drv("Url")
>         End If
>     End Sub
>
> --
> HTH,
> Phillip Williams
> http://www.societopia.net
> http://www.webswapp.com
>
>
> "dcew" wrote:
>
> > If I have a Repeater control which contains one ItemTemplate, which in turn
> > contains one HyperLink control, is there anyway I can set that Hyperlink
> > controls .Text and .NavigateUrl datasource values in the codebehind as
> > opposed to using NavigateUrl='<%# Eval("URL") %>' style syntax in the .aspx?
> >
> > Hope that makes sense.