SQL异常未被用户代码处理连接数据库到ASP.网的网站

我试图将数据库连接到我的ASP。. NET网站遇到这个错误:

An exception of type 'System.Data.SqlClient.SqlException' occurred in System.Data.dll but was not handled in user code
Additional information: Cannot open database "airplane_reservation" requested by the login. The login failed.
Login failed for user 'PELim'PeiErn'.

我在SQL Management Studio 2014中创建数据库。我使用的是Visual Studio community 2015，这是我的c#代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
public partial class CompleteOrder : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Random rnd = new Random();
        int ordernum = rnd.Next(3, 10000);
        string Name = Request.QueryString["name"];
        string IC = Request.QueryString["ic"];
        string Contact = Request.QueryString["contact"];
        string Date = Request.QueryString["date"];
        string Seats = (string) (Session["seats"]);
        Label7.Text = Convert.ToString(ordernum);
        Label4.Text = Name;
        Label8.Text = IC;
        Label10.Text = Contact;
        Label12.Text = Date;
        Label14.Text = Seats;
        SqlConnection con = new SqlConnection(@"Data Source=PELim;Initial Catalog=airplane_reservation;Integrated Security=True;Pooling=False");
        con.Open();
        SqlCommand cmd =new SqlCommand("INSERT INTO Airplane_Reservation(Order_Number,Name,Identification_Number, Contact_Number, Departure_Date, Seats)VALUES('" + ordernum + "','" + Name + "','" + IC + "','" + Contact + "', '" + Date + "', '" + Seats + "')", con);
        cmd.ExecuteNonQuery();
        con.Close();
    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        Response.Redirect("Main.aspx");
    }
}

请帮帮我，谢谢。