Problem load Table from Session into GridView

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

ASP.NET

<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" />

C#

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;
    }

C#

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:

C#

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

Posted 3-Jun-12 23:15pm

giatuan2011

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Comments

Ravi Sant 4-Jun-12 5:20am

Are you using full path url for Response.Redirect? That is common cause. Using relative url solves problem in such case.

vivek.bagdai 4-Jun-12 6:14am

You Add only one column in table and in grid view there are two bounded fields
1. ("NameProduct")
2. ("idProduct")

So you need to add column or make "NameProduct" to ("idProduct").

1 solution

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Michael_Jacsi · Answer 1 · 2012-06-03T23:29:00

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

C#

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;

Then Add a new row in that table

C#

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;

Then Bind Gridview

C#

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