Asp.net-cookies Shopping Cart Class

Asp.net-cookies Shopping Cart Class
asp.net cookies shopping cart, realize shopping cart function, realize no need to register to shopping
Using System;

Using System.Data;

Using System.Configuration;

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;

Article Source: http://study.pctoday.net.cn/2_ASP.net.aspx

public class Cookieshoppingcart

{

<summary>

Add Shopping Cart

</summary>

<param name= "ProductID" ></param>

<param name= "Quantity" ></param>

public static void AddToShoppingCart (int ProductID, int Quantity, int Box)

{

if (httpcontext.current.request.cookies["shoppingcart"] = = null)

{

HttpCookie Ocookie = new HttpCookie ("ShoppingCart");

Set Cookie to expire in 3 hours

Ocookie.expires = DateTime.Now.AddYears (3);

Ocookie.value = productid.tostring () + ":" + quantity.tostring () + ":" + box.tostring ();

HTTPCONTEXT.CURRENT.RESPONSE.COOKIES.ADD (Ocookie);

}

If the cookie already exists

Else

{

BOOL bexists = false;

HttpCookie Ocookie = (HttpCookie) httpcontext.current.request.cookies["ShoppingCart"];

Ocookie.expires = DateTime.Now.AddYears (3);

String shoppingcartstr = OCookie.Value.ToString ();

string[] Arrcookie = Shoppingcartstr.split (new char[] {', '});

See if the product is in a cookie

String Newcookie = "";

for (int i = 0; i < arrcookie.length; i++)

{

if (arrcookie[i). Trim (). Remove (arrcookie[i). IndexOf (': ')) = = Productid.tostring (). Trim ())

{

Bexists = true;

String oldquantity = Arrcookie[i]. Trim (). Substring (Arrcookie[i]. Trim (). IndexOf (': ') + 1)//Get Quantity

oldquantity = Oldquantity.remove (Oldquantity.lastindexof (":"));

Oldquantity = (Convert.ToInt32 (oldquantity) + Quantity). ToString ();

Arrcookie[i] = Arrcookie[i]. Trim (). Remove (arrcookie[i). IndexOf (': ')) + ":" + oldquantity + ":" + box.tostring ();

HttpContext.Current.Response.Write (Arrcookie[i]. Trim (). Remove (arrcookie[i). IndexOf (': ')) + "already exists!" Quantity: "+ oldquantity + <br>");

HttpContext.Current.Response.Write (Arrcookie[i] + "<br>");

}

Newcookie = Newcookie + "," + arrcookie[i];

}
If the product is not
if (!bexists)

{

Ocookie.value = Ocookie.value + "," + productid.tostring () + ":" + quantity.tostring () + ":" + box.tostring ();

}

Else

{

Ocookie.value = newcookie.substring (1);

}

HTTPCONTEXT.CURRENT.RESPONSE.COOKIES.ADD (Ocookie);

HttpContext.Current.Response.Write ("ShoppingCart:" + httpcontext.current.request.cookies["ShoppingCart"). Value);

}

}

<summary>

Remove Shopping cart Items

</summary>

<param name= "ProductID" ></param>

public static void

Removeshoppingcart (int ProductID)

{

if (httpcontext.current.request.cookies["ShoppingCart"]!= null)

{

HttpCookie Ocookie = (HttpCookie) httpcontext.current.request.cookies["ShoppingCart"];

Ocookie.expires = DateTime.Now.AddYears (3);

Check if Cookie already contain same item

String shoppingcartstr = OCookie.Value.ToString ();

string[] Arrcookie = Shoppingcartstr.split (new char[] {', '});

string[] ArrCookie2 = new String[arrcookie.length-1];

int j = 0;

String newstr = "";

for (int i = 0; i < arrcookie.length; i++)

{

if (arrcookie[i). Trim (). Remove (arrcookie[i). IndexOf (': '))!= productid.tostring ())

Newstr = Newstr + "," + arrcookie[i];

}

if (Newstr = "")

httpcontext.current.response.cookies["ShoppingCart"]. Value = "";

Else

httpcontext.current.response.cookies["ShoppingCart"]. Value = newstr.substring (1);

}

}

public static void Updateshoppingcart (int ProductID, int Quantity, BOOL box)

{

int Box = 1;

if (!box)

Box = 0;

if (httpcontext.current.request.cookies["ShoppingCart"]!= null)

{

BOOL bexists = false;

HttpCookie Ocookie = (HttpCookie) httpcontext.current.request.cookies["ShoppingCart"];

Ocookie.expires = DateTime.Now.AddYears (3);

String shoppingcartstr = OCookie.Value.ToString ();

string[] Arrcookie = Shoppingcartstr.split (new char[] {', '});

See if the product is in a cookie

String Newcookie = "";

for (int i = 0; i < arrcookie.length; i++)

{

if (arrcookie[i). Trim (). Remove (arrcookie[i). IndexOf (': ')) = = Productid.tostring (). Trim ())

Arrcookie[i] = Arrcookie[i]. Trim (). Remove (arrcookie[i). IndexOf (': ')) + ":" + quantity.tostring () + ":" + box.tostring ();

Newcookie = Newcookie + "," + arrcookie[i];

}

httpcontext.current.response.cookies["ShoppingCart"]. Value = newcookie.substring (1);

}

}
public static DataTable Getshoppingcart ()
{

DataTable dt = new DataTable ();

if (httpcontext.current.request.cookies["ShoppingCart"]!= null && httpcontext.current.request.cookies[" ShoppingCart "]. Value.trim ()!= "")

{

HttpCookie Ocookie = (HttpCookie) httpcontext.current.request.cookies["ShoppingCart"];

Ocookie.expires = DateTime.Now.AddYears (3);

String shoppingcartstr = OCookie.Value.ToString ();

HttpContext.Current.Response.Write (SHOPPINGCARTSTR);

string[] Arrcookie = Shoppingcartstr.split (new char[] {', '});

See if the product is in a cookie

String Newcookie = "";

for (int i = 0; i < arrcookie.length; i++)

{

Newcookie = Newcookie + "," + arrcookie[i]. Trim (). Remove (arrcookie[i). IndexOf (': '));

}

Newcookie = newcookie.substring (1);

DT = Product.getproductbyproductids (Newcookie,-1);

Dt. Columns.Add ("Quantity");

Dt. Columns.Add ("box");

foreach (DataRow row in dt. Rows)

{

for (int i = 0; i < arrcookie.length; i++)

{

if (arrcookie[i). Trim (). Remove (arrcookie[i). IndexOf (': ')) = = row["ProductId"]. ToString ())

{

row["Quantity"] = Arrcookie[i]. Substring (Arrcookie[i]. IndexOf (":") + 1);

row["Quantity"] = row["Quantity"]. ToString (). Remove (row["Quantity"]. ToString (). IndexOf (":"));

String Box = Arrcookie[i]. Substring (Arrcookie[i]. LastIndexOf (":") + 1);

if (box = = "1")

row["box"] = true;

Else

row["box"] = false;

}

}

}

}

Else

{

DT = database.getdatatable ("SELECT top 0 * view_productlist");

Dt. Columns.Add ("Quantity");

}

return DT;

}

}