using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default3 : System.Web.UI.Page
{
Int32 tt; // tt for total it will calculate the total
DataTable tb = new DataTable(); //create a instance tb of Datatable
protected void Page_Load(object sender, EventArgs e)
{
// here we will create a temporary table of columns under ispostback.
if (IsPostBack == false)
{
//”ord” is a datatable type which create a “Table” and “c” for datatable columns.
DataTable ord = new DataTable("Table"); //the “Table” value must be same for
DataColumn c = new DataColumn(); // always
ord.Columns.Add(new DataColumn("value", Type.GetType("System.Int32")));
// “value” is a column name with Int32 datatype.
ord.Columns.Add(new DataColumn("length", Type.GetType("System.Int32")));
// “length” is a column name with Int32 datatype.
ord.Columns.Add(new DataColumn("breadth", Type.GetType("System.Int32")));
// “total” is a column name with Int32 datatype.
ord.Columns.Add(new DataColumn("total", Type.GetType("System.Decimal")));
// “total” is a Expression which calculate the following formula
ord.Columns["total"].Expression = "value/(length*breadth)";
//storing the structure in “ss” name session.
Session["ss"] = ord;
}
}
protected void btn_submit_Click(object sender, EventArgs e)
{
grdview();// will call the grdview method
}
// following the temporary table with structure
private void tempdata()
{
tb = (DataTable)(Session["ss"]); //getting the structure from session and
GridView1.DataSource = tb; // storing in “tb” datatable variable and bind with
GridView1.DataBind(); // gridview
Int32 a; Int32 i; ;
a = tb.Rows.Count; // it will count the total records in the temporary table
for (i = 0; i < a; i++)
{
tt += Convert.ToInt32(tb.Rows[i][3]);// will sum the each value
}
Label1.Text = tt.ToString();// display in label the total values
}
