CookieParameter Constructors

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

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Initializes a new instance of the CookieParameter class.

Overloads

CookieParameter()	Initializes a new unnamed instance of the CookieParameter class.
CookieParameter(CookieParameter)	Initializes a new instance of the CookieParameter class with the values of the instance specified by the `original` parameter.
CookieParameter(String, String)	Initializes a new named instance of the CookieParameter class, using the specified string to identify which HTTP cookie to bind to.
CookieParameter(String, DbType, String)	Initializes a new instance of the CookieParameter class that has the specified name and database type and that is bound to the specified HTTP cookie.
CookieParameter(String, TypeCode, String)	Initializes a new named and strongly typed instance of the CookieParameter class, using the specified string to identify which HTTP cookie to bind to.

CookieParameter()

Initializes a new unnamed instance of the CookieParameter class.

public:
 CookieParameter();

public CookieParameter ();

Public Sub New ()

Examples

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>

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="cookieparam2vb.aspx.vb" Inherits="cookieparam2vb_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);
        }
    }
}

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

Remarks

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.

Applies to

CookieParameter(CookieParameter)

Initializes a new instance of the CookieParameter class with the values of the instance specified by the original parameter.

protected:
 CookieParameter(System::Web::UI::WebControls::CookieParameter ^ original);

protected CookieParameter (System.Web.UI.WebControls.CookieParameter original);

new System.Web.UI.WebControls.CookieParameter : System.Web.UI.WebControls.CookieParameter -> System.Web.UI.WebControls.CookieParameter

Protected Sub New (original As CookieParameter)

Parameters

original: CookieParameter

A CookieParameter from which the current instance is initialized.

Remarks

The CookieParameter constructor is a protected copy constructor used to clone a CookieParameter instance. The property values of the CookieParameter object, including CookieName, Name, and Type, are all transferred to the new instance.

Applies to

CookieParameter(String, String)

Initializes a new named instance of the CookieParameter class, using the specified string to identify which HTTP cookie to bind to.

public:
 CookieParameter(System::String ^ name, System::String ^ cookieName);

public CookieParameter (string name, string cookieName);

new System.Web.UI.WebControls.CookieParameter : string * string -> System.Web.UI.WebControls.CookieParameter

Public Sub New (name As String, cookieName As String)

Parameters

name: String

The name of the parameter.

cookieName: String

The name of the HTTP cookie that the parameter object is bound to. The default is Empty.

Examples

The following code example demonstrates how to create a CookieParameter object using the CookieParameter constructor, and add it to a SqlDataSource control's SelectParameters collection.

// You can programmatically add a CookieParameter to the
// SqlDataSource control's SelectParameters collection.
CookieParameter cookieParam = new CookieParameter("lastname","lname");
SqlDataSource1.SelectParameters.Add(cookieParam);

' You can  programmatically add a CookieParameter to the
' SqlDataSource control's SelectParameters collection.
Dim cookieParam As New CookieParameter("lastname","lname")
SqlDataSource1.SelectParameters.Add(cookieParam)

Remarks

A CookieParameter object created with the CookieParameter constructor is initialized with the specified parameter name and string that identifies the cookie that the parameter binds to. Other properties, including Type and Direction, are initialized with default values.

Applies to

CookieParameter(String, DbType, String)

Initializes a new instance of the CookieParameter class that has the specified name and database type and that is bound to the specified HTTP cookie.

public:
 CookieParameter(System::String ^ name, System::Data::DbType dbType, System::String ^ cookieName);

public CookieParameter (string name, System.Data.DbType dbType, string cookieName);

new System.Web.UI.WebControls.CookieParameter : string * System.Data.DbType * string -> System.Web.UI.WebControls.CookieParameter

Public Sub New (name As String, dbType As DbType, cookieName As String)

Parameters

name: String

The name of the parameter.

dbType: DbType

The database type that the parameter represents.

cookieName: String

The name of the HTTP cookie that the parameter object is bound to. The default is Empty.

Applies to

CookieParameter(String, TypeCode, String)

Initializes a new named and strongly typed instance of the CookieParameter class, using the specified string to identify which HTTP cookie to bind to.

public:
 CookieParameter(System::String ^ name, TypeCode type, System::String ^ cookieName);

public CookieParameter (string name, TypeCode type, string cookieName);

new System.Web.UI.WebControls.CookieParameter : string * TypeCode * string -> System.Web.UI.WebControls.CookieParameter

Public Sub New (name As String, type As TypeCode, cookieName As String)

Parameters

name: String

The name of the parameter.

type: TypeCode

The type that the parameter represents. The default is Object.

cookieName: String

The name of the HTTP cookie that the parameter object is bound to. The default is Empty.

Examples

The following code example demonstrates how to create a CookieParameter object using the CookieParameter constructor, and add it to a SqlDataSource control's SelectParameters collection.

// You can programmatically add a CookieParameter to the
// SqlDataSource control's SelectParameters collection.
CookieParameter cookieParam = new CookieParameter("lastname",TypeCode.String,"lname");
SqlDataSource1.SelectParameters.Add(cookieParam);

' You can programmatically add a CookieParameter to the
' SqlDataSource control's SelectParameters collection.
Dim cookieParam As New CookieParameter("lastname",TypeCode.String,"lname")
SqlDataSource1.SelectParameters.Add(cookieParam)

Remarks

A CookieParameter object created with the CookieParameter constructor is initialized with the specified parameter name, Type, and string that identifies the cookie that the parameter binds to. Only the Direction and ConvertEmptyStringToNull properties are initialized with default values.

Applies to

แชร์ผ่าน

CookieParameter Constructors

Definition

Overloads

CookieParameter()

Examples

Remarks

Applies to

CookieParameter(CookieParameter)

Parameters

Remarks

See also

Applies to

CookieParameter(String, String)

Parameters

Examples

Remarks

See also

Applies to

CookieParameter(String, DbType, String)

Parameters

See also

Applies to

CookieParameter(String, TypeCode, String)

Parameters

Examples

Remarks

See also

Applies to

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