HttpRequest.Params プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

HttpRequest.Params プロパティ

QueryString、Form、ServerVariables、Cookies の各項目が組み合わされたコレクションを取得します。

名前空間: System.Web
アセンブリ: System.Web (system.web.dll 内)
構文

Visual Basic (宣言)

Public ReadOnly Property
 Params As NameValueCollection

Visual Basic (使用法)

Dim instance As HttpRequest
Dim value As NameValueCollection

value = instance.Params

public NameValueCollection Params { get; }

C++

public:
property NameValueCollection^ Params {
    NameValueCollection^ get ();
}

/** @property */
public NameValueCollection get_Params ()

JScript

public function get Params
 () : NameValueCollection

プロパティ値
NameValueCollection オブジェクト。

使用例

ページの Params プロパティを反復処理し、各キーおよびそれぞれに対応する値をページ上に表示するコード例を次に示します。

Visual Basic

<%@ Page Language="VB" %>
<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>
<head>
</head>
<body>
    <form runat="server">
        <asp:Label id="lblValues" runat="server"
 />
    </form>
</body>
</html>

<%@ Page Language="C#"%>
<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>
<head>
</head>
<body>
    <form runat="server">
        <asp:Label id="lblValues" runat="server" />
    </form>
</body>
</html>