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HttpRequest.Params Vlastnost

  • Reference

Definice

Obor názvů:
System.Web
Sestavení:
System.Web.dll

Získá kombinovanou kolekci QueryString, , CookiesForma ServerVariables položky.

public:
 property System::Collections::Specialized::NameValueCollection ^ Params { System::Collections::Specialized::NameValueCollection ^ get(); };
public System.Collections.Specialized.NameValueCollection Params { get; }
member this.Params : System.Collections.Specialized.NameValueCollection
Public ReadOnly Property Params As NameValueCollection

Hodnota vlastnosti

NameValueCollection

Objekt NameValueCollection .

Příklady

Následující příklad kódu ukazuje, jak procházet Params vlastnost stránky a jak zobrazit jednotlivé páry klíč/hodnota.

<%@ 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">

    private void Page_Load(object sender, EventArgs e)
    {
        // Create a string to contain the paramaters'
        // information.
        string paramInfo = "";

        // Obtain a reference to the Request.Params
        // collection.
        NameValueCollection pColl = Request.Params;

        // Iterate through the collection and add
        // each key to the string variable.
        for(int i = 0; i <= pColl.Count - 1; i++)
        {
            paramInfo += "Key: " + pColl.GetKey(i) + "<br />";

            // Create a string array that contains
            // the values associated with each key.
            string[] pValues = pColl.GetValues(i);

            // Iterate through the array and add
            // each value to the string variable.
            for(int j = 0; j <= pValues.Length - 1; j++)
            {
                paramInfo += "Value:" + pValues[j] + "<br /><br />";

            }
        }

        // Set a Label's Text property to the values
        // contained in the string variable.
        lblValues.Text = paramInfo;
    }

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

    Private Sub Page_Load(sender As Object, e As EventArgs)

        ' Create a string to contain the paramaters'
        ' information.
        Dim paramInfo As String = ""

        Dim i, j As Integer

        ' Obtain a reference to the Request.Params
        ' collection.
        Dim pColl As NameValueCollection = Request.Params

        ' Iterate through the collection and add
        ' each key to the string variable.
        For i = 0 To pColl.Count - 1

            paramInfo += "Key: " + pColl.GetKey(i) + "<br />"

            ' Create a string array that contains
            ' the values associated with each key.
            Dim pValues() As String  = pColl.GetValues(i)

            ' Iterate through the array and add
            ' each value to the string variable.
            For j = 0 To pValues.Length - 1

                paramInfo += "Value:" + pValues(j) + "<br /><br />"

            Next j
        Next i

        ' Set a Label's Text property to the values
        ' contained in the string variable.
        lblValues.Text = paramInfo
    End Sub

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

Poznámky

Páry name-value se přidají do kolekce v následujícím pořadí:

  1. Parametry řetězce dotazu.

  2. Pole formuláře

  3. Soubory cookie.

  4. Proměnné serveru.

Platí pro