Hi Marc,
I love this feature and (almost) have it working perfectly. Everything works just as expected until I try to save the changes to columns and then I just get an ambiguous error. Here's the call I'm using, and the dropdowns are functioning fine.
$().SPServices.SPCascadeDropdowns({
relationshipList: "Sub-Category",
relationshipListParentColumn: "Category",
relationshipListChildColumn: "Title",
parentColumn: "Category",
childColumn: "Sub Category"
});
The log for this error, if it helps any.
System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) at System.Web.UI.WebControls.DropDownList.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) d6f1dd33-5918-427d-98a8-abc00c7ffc35
Some quick googling suggests I could turn off event validation to get it working but I'm worried about the security impact this might have. Is there another way?