String conn = System.Configuration.ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
SqlConnection con = new SqlConnection(); // for connection
SqlDataAdapter adp = new SqlDataAdapter(); // for fetch the records acc. to condition
DataTable dt = new DataTable(); // fill the fetched records
DataTable tb; // will store the session
TextBox txt_qty; // for Product Quantity
Label lb_Footer_total = null; // for total Product Price
DataRowView r; // for Datarows
protected void Page_Load(object sender, EventArgs e)
{
if (this.Page.User.Identity.IsAuthenticated)
{
con.ConnectionString = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
try
{
con.Open();
}
catch
{
if (con.State == ConnectionState.Closed)
{
con.Open();
}
}
finally
{
con.Close();
}
try
{
if (Session["ss"] != null) // first attempt to check whether the session is null or not
{
}
else
{
//will create a temporary datatable for shopping cart
//*NOTE column name must be same as in database table
DataTable shop = new DataTable("Table"); // create a dataTable name shop ["Table"] always be same.
// declare the columns name according to your need.
shop.Columns.Add(new DataColumn("cproduct_id", Type.GetType("System.String")));
shop.Columns.Add(new DataColumn("cproduct_name", Type.GetType("System.String")));
shop.Columns.Add(new DataColumn("cproduct_brand", Type.GetType("System.String")));
shop.Columns.Add(new DataColumn("iproduct_price", Type.GetType("System.Int32")));
shop.Columns.Add(new DataColumn("quantity", Type.GetType("System.Int32")));
shop.Columns.Add(new DataColumn("total", Type.GetType("System.Decimal")));
shop.Columns["total"].Expression = "iproduct_price*quantity";
Session["ss"] = shop; // storing in sessi on
}
}
catch (Exception ex)
{
}
if (!IsPostBack)
{
tb = (DataTable)Session["ss"];
try
{
adp = new SqlDataAdapter("select * from product where cproduct_id=@id", con); // will fetch the record acc. to product id
adp.SelectCommand.Parameters.AddWithValue("@id", Convert.ToString(Request.QueryString["cart_id"])); // query string of product id.
dt = new DataTable();
adp.Fill(dt);
adp.Dispose();
r = dt.DefaultView[0]; // creating DataRow
// ***************** will append the same id with Quantity. it will not insert if the same product id request *************************//
int a = Convert.ToInt32(tb.Rows.Count);
for (int i = 0; i == a - 1; i += 1)
{
Int32 t = Convert.ToInt32(tb.Rows[i][0]);
if (t == Convert.ToInt32(Request.QueryString["cart_id"]))
{
int k = 1;//Convert.ToInt32(Session["quantity"]);
int k1 = Convert.ToInt32(tb.Rows[i][4]); // column no. of datatable for Qty.
k1 = k1 + k; // adding qty.
tb.Rows[i][4] = k1; // adding with previous value.
GridView1.DataSource = tb; // displaying the records in Gridview
GridView1.DataBind();
lb_Footer_total = (Label)(GridView1.FooterRow.FindControl("lbl_total")); //*** binding footer control with total.
lb_Footer_total.Text = tb.Compute("sum(total)", "").ToString();
grdview(); // refreshing the data in gridview
return;
}
}
}
catch
{
}
DataRow r1; // declaring for Rows
r1 = tb.NewRow(); // assigning and creating the New Row
r1[0] = r["cProduct_id"].ToString(); // database columns name after fetching the records acc. to Product ID.
r1[1] = r["cproduct_name"].ToString();
r1[1] = r["cproduct_brand"].ToString();
r1[3] = Convert.ToInt32(r["iproduct_price"]);
//r1[4] = Session["color"]; // here you can use your column name using session. coming from product page
r1[4] = 1; //default will be one
tb.Rows.Add(r1); // Adding the rows
GridView1.DataSource = tb; // displaying the records in Gridview
GridView1.DataBind();
for (int K = 0; K <= tb.Rows.Count - 1; K++)
{
txt_qty = (TextBox)(GridView1.Rows[K].FindControl("txt_qty")); // finding textbox for binding in G.View
txt_qty.Text = (tb.Rows[K][4].ToString()); //*** this the 6th column of Temp. table for manipulating the Quantity of products ***//
}
dt.Dispose();
lb_Footer_total = (Label)(GridView1.FooterRow.FindControl("lbl_total")); //*** binding footer control with total.
lb_Footer_total.Text = tb.Compute("sum(total)", "").ToString();
// Optional label out side the gridview.
// lbl_total.Text = tb.Compute(“sum(total)”, “”).ToString(); // computing the total of all products
}
//Logged In
}
else
{
Response.Redirect("Main.aspx");
//Not Logged in
}
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
tb = (DataTable)Session["ss"];
tb.Rows.RemoveAt(e.RowIndex); // deleting the current record in Temporary table
grdview();
}
catch
{
}
}
private void grdview()
{
tb = (DataTable)Session["ss"];
if (tb.Rows.Count == 0) // if no record found
{
lbl_total.Text = "Your Shopping Cart is Empty";
GridView1.DataSource = tb;
GridView1.DataBind();
}
else
{
GridView1.DataSource = tb;
GridView1.DataBind();
for (int k = 0; k <= tb.Rows.Count - 1; k++)
{
txt_qty = (TextBox)(GridView1.Rows[k].FindControl("txt_qty")); // finding drodown for binding in G.View
// you can use any control i have used TEXTBOX for Qty u can use DropDownlist etc.
txt_qty.Text = (tb.Rows[k][4].ToString()); //*** this the 6th column of Temp. table for manipulating the Quantity of products ***//
}
lb_Footer_total = (Label)(GridView1.FooterRow.FindControl("lbl_total")); //*** binding footer control with total.
lb_Footer_total.Text = tb.Compute("sum(total)", "").ToString();
}
}
protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "abc") // I have used GridView Rowcommand to UPDATE the Product from shopping cart.
{
tb = (DataTable)Session["ss"];
for (int i = 0; i <= tb.Rows.Count - 1; i++)
{
txt_qty = (TextBox)(GridView1.Rows[i].FindControl("txt_qty"));
tb.Rows[i][4] = txt_qty.Text; //*** this the 6th column of Temp. table for manipulating the Quantity of products ***//
}
grdview();
}
}
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="500"
onrowdeleting="GridView1_RowDeleting" onrowcommand="GridView1_RowCommand"
ShowFooter="True"
>
<Columns>
<asp:TemplateField HeaderText="Details">
<ItemTemplate>
<span><%# Eval("cProduct_Name") %></span> (<span><%# Eval("cproduct_id") %></span>) <br />
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Item Price">
<ItemTemplate>
<del>र</del> <%# Eval("iproduct_price") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Quantity">
<ItemTemplate>
<asp:TextBox ID="txt_qty" runat="server"></asp:TextBox>
</ItemTemplate>
<FooterTemplate>
Total:
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Total" >
<FooterTemplate>
<asp:Label ID="lbl_total" runat="server" Font-Bold="True"></asp:Label>
</FooterTemplate>
<ItemTemplate>
<del>र</del> <%# Eval("Total") %>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField>
<FooterTemplate>
<asp:LinkButton ID="LinkButton2" runat="server" ForeColor="#990000" CommandName="abc">Update</asp:LinkButton>
</FooterTemplate>
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server" CommandName="delete" style="text-align:right"
ImageUrl="~/button_cancel_256.png" Height="24px" Width="24px"/>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle HorizontalAlign="Left" />
</asp:GridView>
<table>
<tr>
<td>
<asp:LinkButton ID="LinkButton1" runat="server" ForeColor="#990000" PostBackUrl="~/ProductsbyBrand.aspx">Continue Shopping</asp:LinkButton>
</td>
</tr>
<tr>
<td>
<asp:Button ID="Button4" runat="server" Text="Place Order" onclick="Button4_Click" />
</td>
</tr>
</table>
<asp:Label ID="lbl_total" runat="server" ForeColor="#CC0000"></asp:Label>
how will i get the total number of quantity
