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Create TABLE admin(username text,age integer);

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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.Data.SQLite; //引用System.Data.SQLite

public partial class Sqlite : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string _connectionString = @"Data Source=F:\mzwucom\bbs\db1.db";
        string _sql;

        SQLiteConnection conn = new SQLiteConnection();
        SQLiteCommand cmd;
        SQLiteDataReader dr;
        conn.ConnectionString = _connectionString;
        conn.Open();
        _sql = "insert into admin(username,age) values('user" + (new Random()).Next(1,100) + "',22)";
        cmd = new SQLiteCommand(_sql, conn);
        cmd.ExecuteNonQuery();
        _sql = "select * from admin";
        cmd = new SQLiteCommand(_sql, conn);
        dr = cmd.ExecuteReader();
        while (dr.Read())
        {
            Response.Write(dr["username"].ToString() + "," + dr["age"].ToString() + "<br/>");
        }
   }
}