I have a Makes drop down listbox and then a Models ddlb. I get my data visible in the first. I get the param to pass back for the second.

private void MmDropDownList1_SelectedIndexChanged(object sender, System.EventArgs e)
{
//lcmakes char
Models oModels = (Models)this.RegisterBizObj(new Models());
// Get a DataSet containing all makes
DataSet dsGetModels = oModels.GetModels(MmDropDownList1.SelectedItem.Value);
// Persist the DataSet to the Session object
//Session["dsGetModels"] = dsGetModels;
}
this is a copy of how the data loads for the page_load on the first ddlb, all makes are now model.

Why won't data show in the second list?

TIA