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 using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.Runtime.InteropServices;
using System.Configuration;
using System.Web.UI.WebControls;
using System.Web.Services.Description;
public partial class _Default : System.Web.UI.Page
{
static DataSet ds;
int index;
protected void Page_Load(object sender, EventArgs e)
{
//set mode of textbox2 as password
//ÔÚasp.netÖÐÉèÖÃtextbox ÊôÐÔΪpassword (C#ÖÐÊÇpasswordchar = ……)
TextBox2.TextMode = TextBoxMode.Password ;
//count the num of user,as we can add the new user with index++(as id)
string strConnection = ConfigurationManager.AppSettings["Str.Properties.Settings.masterConnectionString"].ToString();
SqlConnection objConnection = new SqlConnection(strConnection);
objConnection.Open();
string sql = "count user num";
sql="select userid as userid,name as name from judging";
SqlDataAdapter adp = new SqlDataAdapter(sql, objConnection);
ds = new DataSet();
ds.Clear();
adp.Fill(ds, "judging");
index = ds.Tables[0].Rows.Count+1;
}

//Register function
protected void Button1_Click(object sender, EventArgs e)
{
/******************method 1*******************/
//string strConnection = "Data Source=ZRQ-PC;";
//strConnection += "Initial Catalog=master;Integrated Security=True";
//SqlConne