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asp.net 实现用户登录和注册——基于webform模式

作者：帮我毕业 点击次数：0

    环境:Windows10 + VS2015 + 自带LocalDB

    看一下效果:

    1、注册页面：

1.jpg

如果用户重名:

 

2、登录页：

 

3、注册或者登录好了会跳到Home页面并且显示当前的用户

 

下面看看关键代码：

①注册前台页面Register.aspx：

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Register.aspx.cs" Inherits="Album.OnlineAlbum.Register" %>
  2.  
  3. <!DOCTYPE html>
  4.  
  5. <html xmlns="http://www.w3.org/1999/xhtml">
  6. <head runat="server">
  7. <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  8. <title>注册</title>
  9. <style>
  10. form{
  11.  
  12.  
  13. color:#575454;
  14. width:500px;
  15. margin:20px auto;
  16. font-size:15px;
  17. }
  18. .label{
  19. color:red;
  20. font-size:12px;
  21. font-family:'Lucida Console';
  22. }
  23.  
  24. input.Tb{
  25. border-radius:5px;
  26.  
  27. }
  28.  
  29. .user_name{ width:240px; height:38px; line-height:38px; border:1px solid #000; background:url(login_img_03.png)  no-repeat left center; padding-left:30px; }
  30. .user_name input{ width:230px; height:36px; border:1px solid #fff;color:#666;}
  31. .password{ width:240px; height:38px; line-height:38px; border:1px solid #dfe1e8; background:url(login_img_09.png)  no-repeat left center; padding-left:30px; }
  32. .password input{ width:230px; height:36px; border:1px solid #000;color:#666;}
  33. .transButton {
  34. border:solid 1px;
  35. background-color:transparent;
  36. }
  37. #btnRegister{
  38.  
  39. font-size:14px;
  40. }
  41. #linkToLogin{
  42. text-decoration:none
  43. }
  44. #ckItem{
  45. text-decoration:none
  46. }
  47. body{
  48. background-image:url("rbg.jpg");
  49. }
  50. </style>
  51. </head>
  52. <body>
  53. <form id="form1" runat="server">
  54.  
  55. <h2>欢迎注册OA</h2>
  56.  
  57. <h3>每一天，记录美。</h3>
  58.  
  59.  
  60.  
  61. <br />
  62.  
  63. <asp:ScriptManager ID="ScriptManager1" runat="server">
  64. </asp:ScriptManager>
  65.  
  66.  
  67. <asp:TextBox runat="server" ID="rUserNameText"   Height="40px" Width="490px" CssClass="Tb"></asp:TextBox>
  68.  
  69. <br />
  70. <asp:UpdatePanel ID="UpdatePanel1" runat="server">
  71. <ContentTemplate>
  72. <asp:CustomValidator ID="CustomValidator1" runat="server" 
  73. ControlToValidate="rUserNameText" ErrorMessage="*"
  74. onservervalidate="CustomValidator1_ServerValidate">
  75. </asp:CustomValidator>
  76. </ContentTemplate>
  77.  
  78. </asp:UpdatePanel>
  79. <br />
  80. <asp:TextBox runat="server" ID="rPsdText"  TextMode="Password" Height="40px" Width="490px" CssClass="Tb"></asp:TextBox>
  81. <br />
  82. <asp:UpdatePanel ID="UpdatePanel2" runat="server">
  83. <ContentTemplate>
  84. <asp:CustomValidator ID="CustomValidator2" runat="server" 
  85. ControlToValidate="rPsdText" ErrorMessage="*"
  86. onservervalidate="CustomValidator2_ServerValidate">
  87. </asp:CustomValidator>
  88. </ContentTemplate>
  89.  
  90. </asp:UpdatePanel>
  91. <br />
  92. <asp:TextBox runat="server" ID="rrPsdText"  TextMode="Password" Height="40px" Width="490px" CssClass="Tb" ></asp:TextBox>
  93. <br />
  94. <asp:UpdatePanel ID="UpdatePanel3" runat="server">
  95. <ContentTemplate>
  96. <asp:CustomValidator ID="CustomValidator3" runat="server" 
  97. ControlToValidate="rrPsdText" ErrorMessage="*"
  98. onservervalidate="CustomValidator3_ServerValidate">
  99. </asp:CustomValidator>
  100. </ContentTemplate>
  101.  
  102. </asp:UpdatePanel>
  103.  
  104. <br />
  105. <table>
  106. <tr>
  107. <td>
  108. <asp:CheckBox ID="CheckBox1" runat="server" Checked="true" />
  109. </td>
  110. <td>
  111. <span>同意</span>  <asp:LinkButton runat="server" Text="服务条款" ID="ckItem"></asp:LinkButton>
  112. </td>
  113. <td>
  114.                       
  115.                       
  116.       
  117. </td>
  118. <td>
  119.  
  120. <asp:LinkButton ID="linkToLogin" runat="server" Text="已有账号?登录" OnClick="linkToLogin_Click"></asp:LinkButton>
  121. </td>
  122. </tr>
  123. </table>
  124.  
  125.  
  126.  
  127.  
  128.  
  129.  
  130. <asp:Button ID="btnRegister" runat="server" CssClass="transButton" Height="49px" Text="注    册" Width="500px" OnClick="btnRegister_Click" />
  131.  
  132.  
  133. </form>
  134. </body>
  135. <script type="text/javascript">  
  136. function watermark(id, value) {
  137. var obj = document.getElementById(id);
  138. var isPsdMode = false;
  139. if (obj.type == "password")
  140. {
  141. obj.type = "text";
  142. isPsdMode = true;
  143. }
  144. obj.value = value;
  145. obj.style.color = "Gray";
  146. //获取焦点事件
  147. obj.onfocus = function () {
  148.  
  149. obj.style.color = "Black";
  150. if (isPsdMode)
  151. {
  152. obj.type = "password";
  153. }
  154. if (this.value == value) {
  155. this.value = '';
  156. }
  157. };
  158. //失去焦点事件
  159. obj.onblur = function () {
  160. if (this.value == "") {
  161. if (isPsdMode) {
  162. obj.type = "text";
  163. }
  164. this.value = value;
  165. obj.style.color = "Gray";
  166. }
  167. else {
  168. obj.style.color = "Black";
  169. }
  170. };
  171. }
  172. window.onload = function () {
  173. var arr = [{ 'id': 'rUserNameText', 'desc': '用户名' }, { 'id': 'rPsdText', 'desc': '密码' },{ 'id': 'rrPsdText', 'desc': '确认密码' }];
  174. for (var i = 0; i < arr.length; i++) {
  175. watermark(arr[i].id, arr[i].desc);
  176. }
  177. };
  178. </script>
  179. </html>

 

  注册后台页面Register.aspx.cs:

 

  1. using System;
  2. using System.Data;
  3. using System.Data.SqlClient;
  4. using System.Drawing;
  5.  
  6. namespace Album.OnlineAlbum
  7. {
  8. public partial class Register : System.Web.UI.Page
  9. {
  10. private bool UserNameIselgal = false;
  11. private bool PsdIselgal = false;
  12. private bool CanRegister = false;
  13.  
  14. protected void Page_Load(object sender, EventArgs e)
  15. {
  16.  
  17. }
  18.  
  19.  
  20. protected void linkToLogin_Click(object sender, EventArgs e)
  21. {
  22. Response.Redirect("Login.aspx");
  23. }
  24.  
  25. protected void btnRegister_Click(object sender, EventArgs e)
  26. {
  27. Session["User"] = rUserNameText.Text;
  28. Session["Psd"] = rPsdText.Text;
  29.  
  30. string connStr = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True";
  31. SqlConnection conn = new SqlConnection(connStr);
  32.  
  33.  
  34. try
  35. {
  36. conn.Open();
  37. SqlCommand cmd = new SqlCommand("select count(*) from UserTable where UId=@UId", conn);
  38. cmd.Parameters.Add("@UId", SqlDbType.Char);
  39. cmd.Parameters[0].Value = Session["User"];
  40. int count = (int)cmd.ExecuteScalar();
  41.  
  42. if (count > 0)
  43. {
  44.  
  45. Response.Write("<script>alert('用户名已存在!')</script>");
  46. }
  47. else
  48. {
  49.  
  50. CanRegister = true;
  51. }
  52. }
  53. catch
  54. {
  55. Response.Write("检测重名异常");
  56. }
  57.  
  58. finally
  59. {
  60. conn.Close();
  61. }
  62.  
  63. if (CanRegister)
  64. {
  65. try
  66. {
  67. conn.Open();
  68. string strIns = "insert into  UserTable(UId, Psd) values(@UId, @Psd)";
  69. SqlCommand cmd = new SqlCommand(strIns, conn);
  70. cmd.Parameters.Add("@UId", SqlDbType.NChar);
  71. cmd.Parameters.Add("@Psd", SqlDbType.NChar);
  72.  
  73. cmd.Parameters["@UId"].Value = Session["User"];
  74. cmd.Parameters["@Psd"].Value = Session["Psd"];
  75.  
  76. cmd.ExecuteNonQuery();
  77. }
  78. catch
  79. {
  80. Response.Write("注册异常");
  81. }
  82. finally
  83. {
  84. conn.Close();
  85.  
  86. }
  87. }
  88. CanRegister = CanRegister && UserNameIselgal && PsdIselgal;
  89. if (CanRegister)
  90. {
  91. Session["CurrentUser"] = rUserNameText.Text;
  92. Response.Redirect("Home.aspx");
  93. }
  94.  
  95. }
  96.  
  97. protected void CustomValidator1_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
  98. {
  99. if (rUserNameText.Text.Equals("用户名"))
  100. {
  101. CustomValidator1.ErrorMessage = "*用户名为空";
  102. args.IsValid = false;
  103. } else if (System.Text.RegularExpressions.Regex.IsMatch(rUserNameText.Text, "^[0-9a-zA-Z]+$") &&
  104. rUserNameText.Text.Length > 5 && rUserNameText.Text.Length < 11)
  105. {
  106. args.IsValid = true;
  107. UserNameIselgal = true;
  108. }
  109. else
  110. {
  111. CustomValidator1.ErrorMessage = "*用户名由6~10位数字和字母构成";
  112. args.IsValid = false;
  113. }
  114.  
  115.  
  116. }
  117.  
  118. protected void CustomValidator2_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
  119. {
  120. if (rPsdText.Text.Equals("密码"))
  121. {
  122. CustomValidator2.ErrorMessage = "*密码为空";
  123. args.IsValid = false;
  124. }
  125.  
  126. else if (System.Text.RegularExpressions.Regex.IsMatch(rPsdText.Text, "^[0-9a-zA-Z]+$") &&
  127. rPsdText.Text.Length > 4)
  128. {
  129. args.IsValid = true;
  130. }
  131. else
  132. {
  133. CustomValidator2.ErrorMessage = "*密码由全数字和字母构成且不少于5位";
  134. args.IsValid = false;
  135. }
  136. }
  137.  
  138. protected void CustomValidator3_ServerValidate(object source, System.Web.UI.WebControls.ServerValidateEventArgs args)
  139. {
  140. if (rrPsdText.Text.Equals("") ||rrPsdText.Text.Equals("确认密码"))
  141. {
  142. args.IsValid = false;
  143. CustomValidator3.ErrorMessage = "*确认密码为空";
  144. }
  145. else if (!rrPsdText.Text.Equals(rPsdText.Text))
  146. {
  147. args.IsValid = false;
  148. CustomValidator3.ErrorMessage = "*两次密码不一致";
  149. }
  150. else
  151. {
  152. PsdIselgal = true;
  153. args.IsValid = true;
  154. }
  155. }
  156. }
  157. }

    ②登录前台页面Login.aspx:

    

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Login.aspx.cs" Inherits="Album.OnlineAlbum.Login" %>
  2.  
  3. <!DOCTYPE html>
  4.  
  5. <html xmlns="http://www.w3.org/1999/xhtml">
  6. <head runat="server">
  7. <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  8. <title>登陆</title>
  9. <style>
  10. form{
  11.  
  12.  
  13. color:#575454;
  14. width:500px;
  15. margin: auto;
  16. font-size:15px;
  17. margin-top:260px;
  18. }
  19. #spanpsd{
  20. margin-left:125px;
  21. }
  22. #spanuser{
  23. margin-left:110px;
  24. }
  25. div{
  26. margin:30px auto;
  27. align-content:center;
  28. }
  29. .textbox{
  30. border:solid 1px;
  31. background:rgba(0, 0, 0, 0);
  32. }
  33. #LinkButton1{
  34. text-decoration:none;
  35. color:lightblue;
  36. margin-left:230px;
  37.  
  38. }
  39. #Button1{
  40. border-radius:2px;
  41. border:solid 1px;
  42. background-color:transparent;
  43. margin-left:150px;
  44. margin-top:10px;
  45. }
  46. body{
  47. background-image: url("lbg.jpg");
  48. }
  49.  
  50. </style>
  51. </head>
  52. <body>
  53. <form id="form1" runat="server">
  54. <div>
  55. <div>
  56. <span id="spanuser">用户名:</span>
  57. <asp:TextBox ID="TextBox1" runat="server" CssClass="textbox" Height="30px" Width="240px"></asp:TextBox>
  58. </div>
  59.  
  60. <div>
  61. <span id="spanpsd">密码:</span>
  62. <asp:TextBox ID="TextBox2" runat="server" CssClass="textbox" Height="30px" Width="240px" TextMode="Password"></asp:TextBox>
  63. </div>
  64.  
  65. <div>
  66. <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">没有账号?注册</asp:LinkButton>
  67. <br />
  68. <asp:Button ID="Button1" runat="server" Text="登 录" Width="270px" Height="40px" OnClick="Button1_Click" />
  69. </div>
  70. </div>
  71.  
  72. </form>
  73. </body>
  74. </html>

    登录后台页面Login.aspx.cs:

    

  1. using System;
  2. using System.Collections.Generic;
  3. using System.Data;
  4. using System.Data.SqlClient;
  5. using System.Linq;
  6. using System.Web;
  7. using System.Web.UI;
  8. using System.Web.UI.WebControls;
  9.  
  10. namespace Album.OnlineAlbum
  11. {
  12. public partial class Login : System.Web.UI.Page
  13. {
  14. protected void Page_Load(object sender, EventArgs e)
  15. {
  16.  
  17. }
  18.  
  19.  
  20.  
  21. protected void LinkButton1_Click(object sender, EventArgs e)
  22. {
  23. Response.Redirect("Register.aspx");
  24. }
  25.  
  26. protected void Button1_Click(object sender, EventArgs e)
  27. {
  28. string connStr = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True";
  29. SqlConnection conn = new SqlConnection(connStr);
  30.  
  31. try
  32. {
  33.  
  34.  
  35. conn.Open();
  36. SqlCommand cmd = new SqlCommand("select count(*) from UserTable where UId=@UId and Psd=@Psd", conn);
  37. cmd.Parameters.Add("@UId", SqlDbType.Char);
  38. cmd.Parameters.Add("@Psd", SqlDbType.Char);
  39. cmd.Parameters[0].Value = TextBox1.Text;
  40. cmd.Parameters[1].Value = TextBox2.Text;
  41. int count = (int)cmd.ExecuteScalar();
  42. if (count == 1)
  43. {
  44.  
  45. Session["CurrentUser"] = TextBox1.Text;
  46. Response.Redirect("./Home.aspx");
  47.  
  48.  
  49. }
  50. else
  51. {
  52. Response.Write("<script>alert('用户名或密码错误')</script>");
  53. }
  54. }
  55. catch
  56. {
  57. Response.Write("<script>alert('登录异常')</script>");
  58. }
  59.  
  60. finally
  61. {
  62. conn.Close();
  63. }
  64.  
  65. }
  66. }
  67. }

    ③Home.aspx:

    

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Home.aspx.cs" Inherits="Album.OnlineAlbum.Home" %>
  2.  
  3. <!DOCTYPE html>
  4.  
  5. <html xmlns="http://www.w3.org/1999/xhtml">
  6. <head runat="server">
  7. <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
  8. <title>Online Ablum</title>
  9. <style>
  10. #page_header{
  11. height:20px;
  12. margin-left:10px;
  13. }
  14. </style>
  15. </head>
  16. <body>
  17.  
  18.  
  19.  
  20. <form runat="server">
  21.  
  22.  
  23. <asp:LinkButton runat="server" OnClick="Unnamed2_Click" ID="btnToReg">注册</asp:LinkButton>
  24.  
  25.  <asp:LinkButton runat="server" OnClick="Unnamed1_Click" ID="btnToLog">登录</asp:LinkButton>
  26.  
  27. </form>
  28.  
  29.  
  30. </body>
  31. </html>

    home.aspx.cs:

    

  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Web;
  5. using System.Web.UI;
  6. using System.Web.UI.WebControls;
  7.  
  8. namespace Album.OnlineAlbum
  9. {
  10. public partial class Home : System.Web.UI.Page
  11. {
  12. protected void Page_Load(object sender, EventArgs e)
  13. {
  14. if (Session["CurrentUser"] != null)
  15. btnToReg.Text = Session["CurrentUser"].ToString();
  16. }
  17.  
  18. protected void Unnamed1_Click(object sender, EventArgs e)
  19. {
  20. Response.Redirect("Login.aspx");
  21. }
  22.  
  23. protected void Unnamed2_Click(object sender, EventArgs e)
  24. {
  25. Response.Redirect("Register.aspx");
  26. }
  27. }
  28. }    

   Web.config:

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <!--
  3.   有关如何配置 ASP.NET 应用程序的详细信息，请访问
  4.   http://go.microsoft.com/fwlink/?LinkId=169433
  5.   -->
  6. <configuration>
  7.  
  8.  
  9. <connectionStrings>
  10. <add name="ConnectionString" connectionString="Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Database1.mdf;Integrated Security=True"
  11. providerName="System.Data.SqlClient" />
  12. </connectionStrings>
  13. <appSettings>
  14. <add key="ValidationSettings:UnobtrusiveValidationMode" value="none"/>
  15. </appSettings>
  16. <system.web>
  17. <compilation debug="true" targetFramework="4.5.2"/>
  18. <httpRuntime targetFramework="4.5.2"/>
  19. <httpModules>
  20. <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"/>
  21. </httpModules>
  22. </system.web>
  23. <system.codedom>
  24. <compilers>
  25. <compiler language="c#;cs;csharp" extension=".cs"
  26. type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
  27. warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701"/>
  28. <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb"
  29. type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
  30. warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+"/>
  31. </compilers>
  32. </system.codedom>
  33. <system.webServer>
  34. <validation validateIntegratedModeConfiguration="false"/>
  35. <modules>
  36. <remove name="ApplicationInsightsWebTracking"/>
  37. <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"
  38. preCondition="managedHandler"/>
  39. </modules>
  40. </system.webServer>
  41. </configuration>

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