by Pieter Brinkman
9. April 2009 09:34
I was using a ObjectDataSource to generate a listing including paging. The ObjectDataSource used the GetItems method of my usercontrol. See this previous post. This construction works great. But now I needed to do some custom filtering in the GetItems method based on a property of the usercontrol. At first I tried to use the property directly in the GetItems method, this didn't work the property the property returned NULL. After a small search on the internet I found the following blog post.
The solution is to dynamically add a Selectparameter that will be passed to the GetItems method. You can dynamically add Selectparameters at the OnSelecting event of the asp:ObjectDataSource, like this:
<asp:ObjectDataSource ID="odsListing" runat="server" SelectMethod="getItems"
TypeName="HUWeb.layouts.HU_GLOBAL.NodeListingSmall"
DataObjectTypeName="Sitecore.Collections.ChildList"
onselecting="odsListing_Selecting">
</asp:ObjectDataSource>
And in you codebehind:
[code:c#]
protected void odsListing_Selecting(object sender, ObjectDataSourceSelectingEventArgs e)
{
e.InputParameters["ListingDataSourceId"] = YourUsercontrolProperty;
}
Now you can use YourUsercontrolProperty in the Select method of your ObjectDataSource.
public Sitecore.Collections.ItemList getItems(string myProperty)
{
// Your selection logica
// You can use the string myProperty for filtering
}
Hope it helps.
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