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Can you explain this code? I am not able to get this?

Can you explain this code? I am not able to get this?

Jitendra Kumar

Jitendra Kumar

8y1.2kLearn iOS Programming

protected void btnaddtocart_Click(object sender, EventArgs e)

{

if (Session["cart"] == null)

{

SqlParameter[] prm = new SqlParameter[1];

ds = new DataSet();

prm[0] = new SqlParameter("@id", pid);

ds = an.ReturnSpParamDataSet("tbl_products_info12", prm);

if (ds.Tables[0].Rows.Count > 0)

{

DataSet pds;

pds = new DataSet();

DataTable dt = new DataTable();

dt.Columns.Add(new DataColumn("pid"));

dt.Columns.Add(new DataColumn("productname"));

dt.Columns.Add(new DataColumn("quantity"));

dt.Columns.Add(new DataColumn("price"));

dt.Columns.Add(new DataColumn("discount"));

dt.Columns.Add(new DataColumn("discountprice"));

dt.Columns.Add(new DataColumn("shippingcharge"));

pds.Tables.Add(dt);

DataRow dr = pds.Tables[0].NewRow();

dr["pid"] = pid;

dr["productname"] = ds.Tables[0].Rows[0]["product_name"].ToString();

dr["quantity"] = txtquantity.Text;

dr["price"] = ds.Tables[0].Rows[0]["price"].ToString();

dr["discount"] = ds.Tables[0].Rows[0]["discount"].ToString();

dr["discountprice"] = ds.Tables[0].Rows[0]["discountprice"].ToString();

dr["shippingcharge"] = ds.Tables[0].Rows[0]["shipingcharge"].ToString();

pds.Tables[0].Rows.Add(dr);

Session.Add("cart", pds);

}

Response.Redirect("~/cart.aspx");

}

else

{

DataSet pds = (DataSet)Session["cart"];

SqlParameter[] prm = new SqlParameter[1];

ds = new DataSet();

prm[0] = new SqlParameter("@id", pid);

ds = an.ReturnSpParamDataSet("tbl_products_info12", prm);

if (ds.Tables[0].Rows.Count > 0)

{

DataTable dt = new DataTable();

dt.Columns.Add(new DataColumn("pid"));

dt.Columns.Add(new DataColumn("productname"));

dt.Columns.Add(new DataColumn("quantity"));

dt.Columns.Add(new DataColumn("price"));

dt.Columns.Add(new DataColumn("discount"));

dt.Columns.Add(new DataColumn("discountprice"));

dt.Columns.Add(new DataColumn("shippingcharge"));

pds.Tables.Add(dt);

DataRow dr = pds.Tables[0].NewRow();

dr["pid"] = pid;

dr["productname"] = ds.Tables[0].Rows[0]["product_name"].ToString();

dr["quantity"] = txtquantity.Text;

dr["price"] = ds.Tables[0].Rows[0]["price"].ToString();

dr["discount"] = ds.Tables[0].Rows[0]["discount"].ToString();

dr["discountprice"] = ds.Tables[0].Rows[0]["discountprice"].ToString();

dr["shippingcharge"] = ds.Tables[0].Rows[0]["shipingcharge"].ToString();

pds.Tables[0].Rows.Add(dr);

Session.Add("cart", pds);

}

Response.Redirect("~/cart.aspx");

}

}

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

rajendra singh8y ago
Hello Jitendra,

I would suggest just put a breakpoint on code and try to understad the code line by line you will definitely understands what is happening there.

From my uderstanding it is code for adding item in cart for a e-commerce store in which first value is checked in session["cart"] it means cart has some product so it will fetch the cart first and than add new item if cart does not have item it simply adds item to blank list.

I hope this will help.

Please accept the answer if this help.
0
Sanwar Ranwa8y ago
Hello

Always to try to understand code from basic level or starting

i think this code for a ecommarce site on add to cart button add some values to dataset
0