Asp.net用户登陆数据库验证与注册写入数据库

1.思路与效果图

Index.aspx

注册

注册成功

登陆

登陆验证通过进入内容页1

登陆没通过验证

思路：首先建一个Sqlserver数据库Student,再建一个student表（name,pwd）存放用户名和密码。

然后注册功能的实现：通过数据库插入信息到表的Sql语句来实现，成功提示用户名和密码。

登陆验证的实现：查询student表的数据，SqlDataReader取出数据库的数据,一个If判断语句如果符合取得的数据写入session并跳转到内容页1，否则提示错误。

2.注册功能的实现

前台：注册页面.aspx

<asp:Content ID="Content4" ContentPlaceHolderID="ContentPlaceHolder3" runat="server">
    <fieldset class="register">
        <legend>帐户信息</legend>
        <p>
            <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">用户名:</asp:Label>
            <asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox>
        </p>
        <p>
            <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">密码:</asp:Label>
            <asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox>
        </p>
    </fieldset>
    <p class="submitButton">
        <asp:Button ID="CreateUserButton" runat="server" Text="创建用户" OnClick="CreateUserButton_Click"/>
    </p>

后台:

首先建一个test.cs

public class DBSimple
    {



        private SqlConnection con;

        public DBSimple()
        {
            string str = @"Data Source=PC01;Integrated Security=SSPI;database=Student";
            con = new SqlConnection(str);

        }

        public void TestExecuteNonQuery_Insert(string name, string pwd)
        {
            if (con == null) return;
            string sql = "insert student values('" + name + "','" + pwd + "')";
            SqlCommand cmd = new SqlCommand(sql, con);
            if (con.State == ConnectionState.Closed)
                con.Open();
            try
            {
                cmd.ExecuteNonQuery();
            }
            catch (SqlException ex)
            {

            }
        }


    }

注册页面.aspx.cs

DBSimple db;
        protected void Page_Load(object sender, EventArgs e)
        {
            db = new DBSimple();

        }
        protected void CreateUserButton_Click(object sender, EventArgs e)
        {
            string name = UserName.Text;
            string pwd = Password.Text;

            db.TestExecuteNonQuery_Insert(name, pwd);

            Response.Write("<script>alert('Name=" + name + " , pwd =" + pwd + "  ')</script>");                    

        }

3.登陆功能实现

前台：

<fieldset class="login">
            <legend>帐户信息</legend>
            <p>
                <asp:Label ID="UserNameLabel" runat="server" AssociatedControlID="UserName">用户名:</asp:Label>
                <asp:TextBox ID="UserName" runat="server" CssClass="textEntry"></asp:TextBox>
            </p>
            <p>
                <asp:Label ID="PasswordLabel" runat="server" AssociatedControlID="Password">密码:</asp:Label>
                <asp:TextBox ID="Password" runat="server" CssClass="passwordEntry" TextMode="Password"></asp:TextBox>
            </p>
            <p>
                <asp:CheckBox ID="RememberMe" runat="server"/>
                <asp:Label ID="RememberMeLabel" runat="server" AssociatedControlID="RememberMe" CssClass="inline">保持登录状态</asp:Label>
            </p>
    </fieldset>
    <p class="submitButton">
        <asp:Button ID="LoginButton" runat="server" Text="登录" OnClick="LoginButton_Click"/>
    </p>

后台

protected void LoginButton_Click(object sender, EventArgs e)
        {
            string name = UserName.Text;
            string pwd = Password.Text;
                   
            
            string str = @"Data Source=PC01;Integrated Security=SSPI;database=Student";
            SqlConnection sqlCon = new SqlConnection(str);
            sqlCon.Open();


            SqlCommand sqlComGet = new SqlCommand();
            sqlComGet.Connection = sqlCon;

            sqlComGet.CommandText = "select * from student where name='" + name + "' and pwd='" + pwd + "'";
            SqlDataReader sqlDr = sqlComGet.ExecuteReader();

            if (sqlDr.Read())                                  //帐号和密码正确
            {
                Session["name"] = name;                      //用Session记录帐号

                Session["pwd"] = pwd;                //用Session记录密码

                Response.Redirect("内容页1.aspx");
            }
            else                                              //帐号或密码错误
            {


                Response.Write("<script>window.alert('您输入的用户名或密码不正确！');</script>");


            }

         

            sqlCon.Close();

        
      



        }