喜在这篇文章中，你可以找到相关的code重新开始从Asp.net应用程序池

Hi in this article you can find relevant code to restart application pool from Asp.net

从ASP.NET页面重新启动IIS应用程序池

Restart IIS application pool from ASP.NET page

using System;
using System.Web;
using System.Web.UI;
using System.Management;
using System.DirectoryServices;
using System.Web.UI.WebControls;

public partial class iis : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.Write(System.Environment.MachineName);
        status();
    }

    protected void status()
    {
        string appPoolName = "dev.somesite.com";
        string appPoolPath = @"IIS://" + System.Environment.MachineName + "/W3SVC/AppPools/" + appPoolName;
        int intStatus = 0;
        try
        {
            DirectoryEntry w3svc = new DirectoryEntry(appPoolPath);
            intStatus = (int)w3svc.InvokeGet("AppPoolState");
            switch (intStatus)
            {
                case 2:
                    lblStatus.Text = "Running";
                    break;
                case 4:
                    lblStatus.Text = "Stopped";
                    break;
                default:
                    lblStatus.Text = "Unknown";
                    break;
            }
        }
        catch (Exception ex)
        {
            Response.Write(ex.ToString());
        }
    }
    protected void stopAppPool(object sender, EventArgs e)
    {
        Button btn = (Button)sender;
        string appPoolName = btn.CommandArgument;
        string appPoolPath = @"IIS://" + System.Environment.MachineName + "/W3SVC/AppPools/" + appPoolName;
        try
        {
            DirectoryEntry w3svc = new DirectoryEntry(appPoolPath);
            w3svc.Invoke("Stop", null);
            status();
        }
        catch (Exception ex)
        {
            Response.Write(ex.ToString());
        }
    }

    protected void startAppPool(object sender, EventArgs e)
    {
        Button btn = (Button)sender;
        string appPoolName = btn.CommandArgument;
        string appPoolPath = @"IIS://" + System.Environment.MachineName + "/W3SVC/AppPools/" + appPoolName;
        try
        {
            DirectoryEntry w3svc = new DirectoryEntry(appPoolPath);
            w3svc.Invoke("Start", null);
            status();
        }
        catch (Exception ex)
        {
            Response.Write(ex.ToString());
        }
    }
}