Sir i been study programmer for a month now, yes i still freshie and i find others ppl to help me but they cant solve it. i just need help with my refresh shopping cart list.
 
this is my datatable
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DataTable dt = new DataTable();
dt.Columns.Add("RowID", typeof(int));
dt.Columns.Add("PRD_IMG", typeof(string));
dt.Columns.Add("PRD_CODE", typeof(string));
dt.Columns.Add("PRD_NAME", typeof(string));
dt.Columns.Add("PRD_QTY", typeof(int));
dt.Columns.Add("PRD_AMT", typeof(double));
 
this are my button 
 
protected void btnCalculate_Click(object sender, EventArgs e)
{
 
}
 
this i use to populate data table in server i use literal,
 
private void Populate_SC_List(DataTable dt_ShopCart)
{
 
string s_lit = ""; 
if (dt_ShopCart.Rows.Count <= 0)
{
 
lbl_empty_cart.Text = "<h3>Shopping Cart Is Empty</h3>";
 
return;
}
 
int i_GRANT_QTY = 0;
int i_AddOn_QTY = 0;
double d_GRANT_TOTAL = 0;
 
 
 
//content row
for (int i = 0; i < dt_ShopCart.Rows.Count; i++)
{
int i_qty = Util.CInt(dt_ShopCart.Rows[i]["PRD_QTY"].ToString().Trim());
double d_amt = Util.CDouble(dt_ShopCart.Rows[i]["PRD_AMT"].ToString().Trim());
 
i_GRANT_QTY += i_qty;
d_GRANT_TOTAL += (d_amt * i_qty);
 
 
if (dt_ShopCart.Rows[i]["PRD_CODE"].ToString().Trim().Substring(0, 2) == "AO")
{
i_AddOn_QTY += i_qty;
}
 
 
s_lit += "<tr class='first last odd'>";
s_lit += "<td align='center'><a href=flowerInfo.aspx?pid=" + dt_ShopCart.Rows[i]["PRD_CODE"].ToString().Trim().Substring(0, 5) + " target='_blank'><img src='../productpic/THUMB/" + dt_ShopCart.Rows[i]["PRD_IMG"].ToString().Trim() + "' runat='server' Width='150' /></a></td>";
s_lit += "<td style='text-align:left;'>" + dt_ShopCart.Rows[i]["PRD_NAME"].ToString().Trim() + "</td>";
s_lit += "<dl>";
s_lit += "<dt><strong></strong></dt>";
s_lit += "<dt><strong></strong></dt>";
s_lit += "</dl></td>";
s_lit += "<td align='right'><span class='price'>RM" + Util.CDouble(dt_ShopCart.Rows[i]["PRD_AMT"].ToString()).ToString("#,#0.00") + "</span></td>";
s_lit += "<td class='a-center'>";
s_lit += "<div class='input-qty-box'>";
s_lit += "<div class='input'>";
s_lit += "<ul class='range' >";
s_lit += "<li class='item minus'><a>-</a></li>";
s_lit += "<li>";
s_lit += "<input type='text' maxlength='3' size='2' value='" + dt_ShopCart.Rows[i]["PRD_QTY"].ToString().Trim() + " 'quantity_wanted' onkeypress='return isNumberKey(event)' id='txtQty_" + dt_ShopCart.Rows[i]["RowID"].ToString() + "' >";
s_lit += "</li>";
s_lit += "<li class='item plus'><a>+</a></li>";
s_lit += "</ul>";
s_lit += "</div>";
s_lit += "</div></td>";
s_lit += "<td align='right'><span class='price'>RM " + (i_qty * d_amt).ToString("#,#0.00") + "</span></td>";
s_lit += "<td align='center'><a href=shoppingcart.aspx?a=d&pid=" + dt_ShopCart.Rows[i]["PRD_CODE"].ToString().Trim().Substring(0, 5) + ">x</a></td>";
s_lit += "</tr>";
}
 
int i_QTY = 0;
if (i_GRANT_QTY - i_AddOn_QTY > 0)
i_QTY = i_GRANT_QTY - i_AddOn_QTY;
else
i_QTY = i_AddOn_QTY;
 
hif_i_Qty.Value = i_QTY.ToString();
 
lit_ShopCart.Text = s_lit.Trim();
 
SUB_TOTAL.Text = (d_GRANT_TOTAL).ToString("#,#0.00");
GRANT_TOTAL.Text = (Util.CDouble(hif_SHIP_PRICE_FOOT.Value.Trim()) + d_GRANT_TOTAL).ToString("#,#0.00");
hif_GRANT_QTY.Value = i_GRANT_QTY.ToString();
 
 
 
 
}
 
can it be done? to grab quantity if the user change the quantity the price will change after user click refresh shopping cart button? thanks you sir.