CookieParameter Constructor ()

 

Initializes a new unnamed instance of the CookieParameter class.

Namespace:   System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public CookieParameter()

A CookieParameter object created with the CookieParameter constructor is initialized with default values for all its properties. The CookieName property is initialized to String.Empty. Additionally, the Name property is initialized to String.Empty, the Type property is initialized to TypeCode.Object, the Direction property is initialized to Input, and the DefaultValue property is initialized to null.

The following code example demonstrates how to create a CookieParameter object using the CookieParameter constructor, set its Name, Type, and CookieName properties, and then add it to a SqlDataSource control's SelectParameters collection.

<%@ Page Language="C#" CodeFile="cookieparam2cs.aspx.cs" Inherits="cookieparam2cs_aspx" %> 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:SqlDataSource
          id="SqlDataSource1"
          runat="server"
          DataSourceMode="DataSet"
          ConnectionString="<%$ ConnectionStrings:MyNorthwind%>"
          selectcommand ="SELECT OrderID,CustomerID,OrderDate,RequiredDate,ShippedDate
                          FROM Orders WHERE EmployeeID =
                         (SELECT EmployeeID FROM Employees WHERE LastName = @lastname)">
      </asp:SqlDataSource>

      <asp:GridView
          id="GridView1"
          runat="server"
          AllowSorting="True"
          DataSourceID="SqlDataSource1">
      </asp:GridView>    
    </div>
    </form>
</body>
</html>

The following code-behind module is used with the previous Web Forms page.

public partial class cookieparam2cs_aspx : System.Web.UI.Page 
{
    void Page_Load(Object sender, EventArgs e)
    {
        // These cookies might be added by a login form.
        // They are added here for simplicity.
        if (!IsPostBack)
        {
            Response.Cookies.Add(new HttpCookie("lname", "davolio"));
            Response.Cookies.Add(new HttpCookie("loginname", "ndavolio"));
            Response.Cookies.Add(new HttpCookie("lastvisit", DateTime.Now.ToString()));


            // You can add a CookieParameter to the SqlDataSource control's
            // SelectParameters collection programmatically.
            CookieParameter cookieParam = new CookieParameter();
            cookieParam.Name = "lastname";
            cookieParam.Type = TypeCode.String;
            cookieParam.CookieName = "lname";

            SqlDataSource1.SelectParameters.Add(cookieParam);
        }

    }
}

.NET Framework
Available since 2.0
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