Client/ClientAdd.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Configuration;
using System.Data;

public partial class Client_ClientAdd : System.Web.UI.Page
{
    protected string sqlConString = ConfigurationManager.ConnectionStrings["LibraryConnectionString"].ToString();
    protected SqlConnection sqlCon;
    /// <summary>
    /// 检测用户是不是已经注册
    /// </summary>
    /// <returns></returns>
    protected bool CheckUser()
    {
        sqlCon = new SqlConnection(sqlConString);
        string strCmd = "select * from tb_Client where Number = '" + this.TextBox0.Text.Trim() + "'";
        sqlCon.Open();
        SqlCommand sqlCmd = new SqlCommand(strCmd, sqlCon);
        SqlDataReader sqlDa = sqlCmd.ExecuteReader();

        if (sqlDa.Read())
        {
              return true;
        }
        else
        {
            sqlCon.Close();
            return true;
        }


    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void btnAdd_Click(object sender, ImageClickEventArgs e)
    {
        if (CheckUser())
        {
            sqlCon = new SqlConnection(sqlConString);
            string Number = this.TextBox0.Text;
            string Name= this.TextBox1.Text;
            string Tel = this.TextBox2.Text;
            string Address = this.TextBox3.Text;
            string Email = this.TextBox4.Text;
            string strSql = "insert into tb_Client(Number,Name,Tel,Address,Email) values('" + Number + "','" + Name + "','" + Tel + "','" + Address + "','" + Email + "')";
            SqlCommand sqlCmd = new SqlCommand(strSql, sqlCon);

            try
            {
                if (sqlCon.State == ConnectionState.Closed)
                {