protected void Save_Click(object sender, EventArgs e)
{
PopulateSaveDraftTables();
StoredProcedures sp = new StoredProcedures();
Utils Utilities = new Utils();
DataTable allocatedCosts = (DataTable)ViewState["AllocatedCosts"];
DataSet expendatures = (DataSet)ViewState["Expendatures"];
DataSet netCHG = (DataSet)ViewState["NetCHG"];
DataSet assessments = (DataSet)ViewState["Assessments"];
DataSet assessmentMetrics = (DataSet)ViewState["AssessmentMetrics"];
DataSet differentilRevenue = (DataSet)ViewState["DifferentialRevenue"];
List<object> list = new List<object>();
list.Add(allocatedCosts);
list.Add(expendatures);
list.Add(netCHG);
list.Add(assessments);
list.Add(assessmentMetrics);
list.Add(differentilRevenue);
MemoryStream modelData = Utilities.SerializeToMemoryStream(list);
byte[] tables = modelData.ToArray();
sp.UpdateModelDraft(int.Parse(OpenedDraftHiddenField.Value), tables);
}