将问题从会话表加载到GridView中 [英] Problem load Table from Session into GridView

问题描述

选择产品后，我无法从Session中加载表格.
Product.aspx:

I can''t load table from Session after selecting the product.
Product.aspx:

<asp:DataList ID="DataList1" runat="server" Height="176px" 

    HorizontalAlign="Center" RepeatColumns="5" RepeatDirection="Horizontal" 

    Width="16px" onitemcommand="DataList1_ItemCommand">
    <ItemTemplate>
    <asp:Label ID="lblidProduct" runat="server" Text='<%#Eval("idProduct") %>' />
        <br>
        <br></br>
        <asp:Image ID="img" runat="server" height="160px" 

            ImageUrl='<%# "~/Img/" + Eval("image") %>' width="160px" />
        <br>
        <br></br>
        <asp:Label ID="lblten" runat="server" Text='<%#Eval("NameProduct") %>' />
        <br>
        <br></br>
        <a href='Detail.aspx?id=<%#Eval("idProduct") %>'>Detail</a>
        <br>
        <br></br>
         
        <asp:LinkButton ID="addCart" runat="server" onclick="addCart_Click" CommandName="Add" CommandArgument='<%#Eval("idProduct") %>'

            Text="Add" />

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            BindDataList();
        }
        MakeTable();
    }
DataTable cart=new DataTable("cart");
    void MakeTable()
    {
        cart.Columns.Add("idProduct");
        Session["cart"] = cart;
    }

protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        DataRow row;
        DataTable tb = new DataTable();
        if (e.CommandName == "Add")
        {
            string product = e.CommandArgument.ToString();
            row = cart.NewRow();
            row[0] = product;
            cart.Rows.Add(row);
            Session["cart"] = cart;
        }
    }

Cart.aspx:

Cart.aspx:

if(Session["cart"]!=null)
       {
           DataTable tb = (DataTable)Session["cart"];
           GridView1.DataSource = tb;
           GridView1.DataBind();
       }

推荐答案

尝试此方法.....首先创建表，如下所示

Try this one.....First Create Table like this

DataTable dt_Exclusion = new DataTable();
DataColumn ExcCode = new DataColumn("fExcCode", typeof(string));
dt_Exclusion.Columns.Add(ExcCode);
DataColumn ExcDesc = new DataColumn("fExcDesc", typeof(string));
dt_Exclusion.Columns.Add(ExcDesc);
dt_Exclusion.AcceptChanges();
Session["ExclusionTable"] = dt_Exclusion;

然后在该表中添加新行

Then Add a new row in that table

dt_Exclusion = (DataTable)Session["ExclusionTable"];
                     int Count = dt_Exclusion.Rows.Count;
                     DataRow dr = dt_Exclusion.NewRow();
                     dr["fExcCode"] = lnkbtnExcCode.Text;
                     dr["fExcDesc"] = lnkbtnExcDesc.Text;
                     dt_Exclusion.Rows.InsertAt(dr, Count);
                     dt_Exclusion.AcceptChanges();
                     Session["ExclusionTable"] = dt_Exclusion;

然后绑定Gridview

Then Bind Gridview

dt_Exclusion = (DataTable)Session["ExclusionTable"];
gvresultexclusion.DataSource = dt_Exclusion;
gvresultexclusion.DataBind();

这篇关于将问题从会话表加载到GridView中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！