[英]C# Datatable not saving in Session
我非常困惑,无法弄清楚为什么绑定到gridview之前的数据表没有保存到Session中?
始终为空。
这是我的代码。 Session["Data"] = dts;
应该包含数据。 但是,当我去提取网格视图上的数据时,它是空的
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
PopulateProductClass();
PopulateProduct();
}
PopulateOrderList();
}
private void PopulateOrderList()
{
DateTime d;
DateTime d2;
CustomerInfo ki = CustomerInfoProvider.GetCustomerInfoByUserID(CooneenHelper.GetUserImpersonisationID());
int nKustomerID = ki.CustomerID;
DataTable dts = new DataTable();
dts.Columns.Add("OrderDate", typeof(string));
dts.Columns.Add("OrderNumber", typeof(string));
dts.Columns.Add("OrderItemSKUName", typeof(string));
dts.Columns.Add("SKUNumber", typeof(string));
dts.Columns.Add("OrderItemStatus", typeof(string));
dts.Columns.Add("OrderItemUnitCount", typeof(string));
dts.Columns.Add("mtrx_Code2", typeof(string));
QueryDataParameters qdp = new QueryDataParameters();
qdp.Add("@CustomerID", nKustomerID);
if (drpProductClass.SelectedValue.ToString() != "0" || drpProductClass.SelectedValue.ToString() == null) { qdp.Add("@OrderItemWRClass", drpProductClass.SelectedItem.ToString()); }
if (drpProduct.SelectedValue.ToString() != "0") { qdp.Add("@OrderItemSKUID", drpProduct.SelectedValue.ToString()); }
if (txtStartDate.Text != "") { d = DateTime.Parse(txtStartDate.Text); qdp.Add("@OrderItemDateFrom", d.ToString("yyyy-MM-dd")); }
if (txtEndDate.Text != "") { d2 = DateTime.Parse(txtEndDate.Text); qdp.Add("@OrderItemDateTo", d2.ToString("yyyy-MM-dd")); }
DataSet ds = gc.ExecuteQuery("CN_GetOrderItemByCustID", qdp, QueryTypeEnum.StoredProcedure, true);
foreach (DataRow dr in ds.Tables[0].Rows)
{
DataRow drNew = dts.NewRow();
drNew["OrderDate"] = ValidationHelper.GetDateTime(dr["OrderDate"], DateTime.Now).ToShortDateString();
drNew["OrderNumber"] = dr["OrderNumber"].ToString();
drNew["OrderItemSKUName"] = dr["OrderItemSKUName"].ToString();
drNew["SKUNumber"] = dr["SKUNumber"].ToString();
drNew["OrderItemStatus"] = dr["OrderItemStatus"].ToString();
drNew["OrderItemUnitCount"] = dr["OrderItemUnitCount"].ToString();
drNew["mtrx_Code2"] = dr["mtrx_Code2"].ToString();
dts.Rows.Add(drNew);
}
//Clear the TextBox
litResults.Text = String.Empty;
if (dts.Rows.Count == 1)
litResults.Text = "" + dts.Rows.Count.ToString() + " Order Items";
else
litResults.Text = "" + dts.Rows.Count.ToString() + " Order Items";
gvOrderItems.Visible = true;
gvOrderItems.DataSource = dts.DefaultView;
gvOrderItems.DataBind();
Session["Data"] = dts;
if (dts.Rows.Count > 1) litResults.Text += " - Showing page " + (gvOrderItems.PageIndex + 1).ToString() + " of " + gvOrderItems.PageCount.ToString();
}
您的代码对我来说很好...
protected void Page_Load(object sender, EventArgs e)
{
PopulateOrderList();
}
private void PopulateOrderList()
{
DateTime d;
DateTime d2;
DataTable dts = new DataTable();
dts.Columns.Add("OrderDate", typeof(string));
dts.Columns.Add("OrderNumber", typeof(string));
dts.Columns.Add("OrderItemSKUName", typeof(string));
dts.Columns.Add("SKUNumber", typeof(string));
dts.Columns.Add("OrderItemStatus", typeof(string));
dts.Columns.Add("OrderItemUnitCount", typeof(string));
dts.Columns.Add("mtrx_Code2", typeof(string));
DataRow drNew = dts.NewRow();
drNew["OrderDate"] = DateTime.Now.ToShortDateString();
drNew["OrderNumber"] = "122";
drNew["OrderItemSKUName"] = "sku";
drNew["SKUNumber"] = "skunum";
drNew["OrderItemStatus"] = "Done";
drNew["OrderItemUnitCount"] = "1290";
drNew["mtrx_Code2"] ="abc123";
dts.Rows.Add(drNew);
Session["Data"] = dts;
gridview.Visible = true;
gridview.DataSource = dts.DefaultView;
gridview.DataBind();
}
protected void gridview_SortCommand(object source, DataGridSortCommandEventArgs e)
{
DataTable dt = (DataTable)Session["Data"];
}
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