HttpRequest.Params Property


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Gets a combined collection of QueryString, Form, Cookies, and ServerVariables items.

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

public NameValueCollection Params { get; }

Name-value pairs are added to the collection in the following order:

  1. Query-string parameters.

  2. Form fields.

  3. Cookies.

  4. Server variables.

The following code example shows how to loop through the Params property for a page and how to display each key/value pair.

<%@ Page Language="C#"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<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;

<html xmlns="" >
    <title>ASP.NET Example</title>
    <form id="form1" runat="server">
        <asp:Label id="lblValues" runat="server" />

.NET Framework
Available since 1.1
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