ASP.NET中POST提交数据并跳转页面

　　　　 NameValueCollection data = new NameValueCollection();
data.Add("v1", "val1");
data.Add("v2", "val2");
HttpHelper.RedirectAndPOST(this.Page, "2.aspx", data);

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.Collections.Specialized;
using System.Text;

/// <summary>
/// Summary description for HttpHelper
/// </summary>
/// <Author>Samer Abu Rabie</Author>
public static class HttpHelper
{
/// <summary>
/// This method prepares an Html form which holds all data in hidden field in the addetion to form submitting script.
/// </summary>
/// <param name="url">The destination Url to which the post and redirection will occur, the Url can be in the same App or ouside the App.</param>
/// <param name="data">A collection of data that will be posted to the destination Url.</param>
/// <returns>Returns a string representation of the Posting form.</returns>
/// <Author>Samer Abu Rabie</Author>
private static String PreparePOSTForm(string url, NameValueCollection data)
{
//Set a name for the form
string formID = "PostForm";

//Build the form using the specified data to be posted.
StringBuilder strForm = new StringBuilder();
strForm.Append("<form id=\"" + formID + "\" name=\"" + formID + "\" action=\"" + url + "\" method=\"POST\">");
foreach (string key in data)
{
strForm.Append("<input type=\"hidden\" name=\"" + key + "\" value=\"" + data[key] + "\">");
}
strForm.Append("</form>");

//Build the JavaScript which will do the Posting operation.
StringBuilder strScript = new StringBuilder();
strScript.Append("<script language='javascript'>");
strScript.Append("var v" + formID + " = document." + formID + ";");
strScript.Append("v" + formID + ".submit();");
strScript.Append("</script>");

//Return the form and the script concatenated. (The order is important, Form then JavaScript)
return strForm.ToString() + strScript.ToString();
}
/// <summary>
/// POST data and Redirect to the specified url using the specified page.
/// </summary>
/// <param name="page">The page which will be the referrer page.</param>
/// <param name="destinationUrl">The destination Url to which the post and redirection is occuring.</param>
/// <param name="data">The data should be posted.</param>
/// <Author>Samer Abu Rabie</Author>
public static void RedirectAndPOST(Page page, string destinationUrl, NameValueCollection data)
{
//Prepare the Posting form
string strForm = PreparePOSTForm(destinationUrl, data);

//Add a literal control the specified page holding the Post Form, this is to submit the Posting form with the request.
page.Controls.Add(new LiteralControl(strForm));
}
}