Thank you for your response.

I solved ther issue by creating a QueryDataList control from the code behind, setting the properties dynanimcally, then adding it to ASP PlaceHolder.

placeholder.Controls.Clear();
//Create QDL w/ defaults
CMS.Controls.QueryDataList qdl = new CMS.Controls.QueryDataList();
qdl.StopProcessing = true;
qdl.QueryName = "[QueryName]";
qdl.TransformationName = "[TransformationName";
qdl.RepeatDirection = RepeatDirection.Horizontal;
qdl.RepeatLayout = RepeatLayout.Table;
qdl.EnablePaging = true;
qdl.PagerControl.PagingMode = CMS.Controls.PagingModeTypeEnum.QueryString;
qdl.PagerControl.PagerPosition = CMS.Controls.PagingPlaceTypeEnum.Bottom;
qdl.PageSize = 5;
qdl.RepeatColumns = 1;
qdl.OrderBy = "[Order By Clause]";
qdl.PagerControl.BackNextLocation = CMS.Controls.BackNextLocationTypeEnum.Split;
qdl.PagerControl.ShowFirstLast = false;

//Check if the list should be filtered
if (Request.QueryString["id"] != null)
{
if (Request.QueryString["id"].ToString() != "")
{
if (IsNumeric(Request.QueryString["id"].ToString()))
{
//Get the CMSType
GeneralConnection cn = ConnectionHelper.GetConnection();
DataSet ds = null;
object[,] parameters = new object[1, 3];
parameters[0, 0] = "[Paramater Name]";
parameters[0, 1] = Request.QueryString["id"].ToString();
ds = cn.ExecuteQuery("[Filtering query]", parameters);
if (ds.Tables[0].Rows.Count > 0)
{
qdl.WhereCondition = "[ColumnName] = '" + ds.Tables[0].Rows[0][FilteredValue].ToString() + "'";
}
}
}
}
//Finish creating QDL
qdl.StopProcessing = false;
qdl.DataBind();
placeholder.Controls.Add(qdl);


Thank you for your help!