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CookieParameter.CookieName Propriété

Définition

Obtient ou définit le nom du cookie HTTP lié au paramètre.

public:
 property System::String ^ CookieName { System::String ^ get(); void set(System::String ^ value); };
public string CookieName { get; set; }
member this.CookieName : string with get, set
Public Property CookieName As String

Valeur de propriété

String

Chaîne qui identifie le cookie HTTP côté client lié au paramètre.

Exemples

L’exemple de code suivant montre comment utiliser de manière déclarative un SqlDataSource contrôle et un CookieParameter objet lié à un cookie HTTP pour afficher des données à partir de la base de données Northwind Traders dans un GridView contrôle.

<%@Page  Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

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()));
  }
}


</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <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)">
          <SelectParameters>
            <asp:CookieParameter Name="lastname" CookieName="lname" />
          </SelectParameters>
      </asp:SqlDataSource>

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

    </form>
  </body>
</html>
<%@Page  Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">

Sub Page_Load(sender As Object, e As EventArgs)
  ' These cookies might be added by a login form.
  ' They are added here for simplicity.
  If (Not IsPostBack) Then
      Dim cookie As HttpCookie

      cookie = New HttpCookie("lname","davolio")
      Response.Cookies.Add(cookie)

      cookie = New HttpCookie("loginname","ndavolio")
      Response.Cookies.Add(cookie)

      cookie = New HttpCookie("lastvisit", DateTime.Now.ToString())
      Response.Cookies.Add(cookie)
  End If
End Sub ' Page_Load
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">

      <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)">
          <SelectParameters>                 
            <asp:CookieParameter Name="lastname" CookieName="lname" />
          </SelectParameters>
      </asp:SqlDataSource>

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

    </form>
  </body>
</html>

L’exemple de code suivant montre comment créer par programmation un CookieParameter objet, définir ses propriétés et l’ajouter à la collection d’un SqlDataSource SelectParameters contrôle.

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);
        }
    }
}
Partial Class cookieparam2vb_aspx
    Inherits System.Web.UI.Page
    Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        ' These cookies might be added by a login form.
        ' They are added here for simplicity.
        If (Not IsPostBack) Then
            Dim cookie As HttpCookie

            cookie = New HttpCookie("lname", "davolio")
            Response.Cookies.Add(cookie)

            cookie = New HttpCookie("loginname", "ndavolio")
            Response.Cookies.Add(cookie)

            cookie = New HttpCookie("lastvisit", DateTime.Now.ToString())
            Response.Cookies.Add(cookie)


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

            SqlDataSource1.SelectParameters.Add(cookieParam)

        End If
    End Sub
End Class

Remarques

La CookieName propriété identifie un cookie HTTP, qui est représenté par un HttpCookie objet et est disponible via l’objet actuel HttpRequest . Si le cookie HTTP n’est pas disponible dans l’objet actuel HttpRequest , la Evaluate méthode lie le paramètre à la valeur de la DefaultValue propriété, s’il est défini. Si la DefaultValue propriété n’est pas définie, la Evaluate méthode ne parvient pas à lier le paramètre à une valeur.

S’applique à