ASP.NET 图书管理注册页面代码实现

以下是ASP.NET图书管理系统注册页面的代码实现： ASP.NET代码： ``` <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Registration.aspx.cs" Inherits="BookManagementSystem.Registration" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>注册页面</title> <link href="Styles/StyleSheet.css" rel="stylesheet" type="text/css" /> </head> <body> <form id="form1" runat="server"> <div class="main"> <h1>注册页面</h1> <div class="registration-form"> <div class="form-group"> <label for="txtUserName">用户名:</label> <asp:TextBox ID="txtUserName" runat="server" CssClass="form-control"></asp:TextBox> <asp:RequiredFieldValidator ID="rfvUserName" runat="server" ControlToValidate="txtUserName" ErrorMessage="* 请输入用户名"></asp:RequiredFieldValidator> </div> <div class="form-group"> <label for="txtPassword">密码:</label> <asp:TextBox ID="txtPassword" runat="server" CssClass="form-control" TextMode="Password"></asp:TextBox> <asp:RequiredFieldValidator ID="rfvPassword" runat="server" ControlToValidate="txtPassword" ErrorMessage="* 请输入密码"></asp:RequiredFieldValidator> </div> <div class="form-group"> <label for="txtConfirmPassword">确认密码:</label> <asp:TextBox ID="txtConfirmPassword" runat="server" CssClass="form-control" TextMode="Password"></asp:TextBox> <asp:RequiredFieldValidator ID="rfvConfirmPassword" runat="server" ControlToValidate="txtConfirmPassword" ErrorMessage="* 请输入确认密码"></asp:RequiredFieldValidator> <asp:CompareValidator ID="cvConfirmPassword" runat="server" ControlToCompare="txtPassword" ControlToValidate="txtConfirmPassword" ErrorMessage="* 两次输入的密码不一致"></asp:CompareValidator> </div> <div class="form-group"> <label for="txtEmail">邮箱:</label> <asp:TextBox ID="txtEmail" runat="server" CssClass="form-control"></asp:TextBox> <asp:RequiredFieldValidator ID="rfvEmail" runat="server" ControlToValidate="txtEmail" ErrorMessage="* 请输入邮箱"></asp:RequiredFieldValidator> <asp:RegularExpressionValidator ID="revEmail" runat="server" ControlToValidate="txtEmail" ErrorMessage="* 请输入正确的邮箱格式" ValidationExpression="\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"></asp:RegularExpressionValidator> </div> <div class="form-group"> <asp:Button ID="btnRegister" runat="server" CssClass="btn btn-primary" Text="注册" OnClick="btnRegister_Click" /> </div> </div> </div> </form> </body> </html> ``` C#代码： ```csharp using System; using System.Data.SqlClient; namespace BookManagementSystem { public partial class Registration : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void btnRegister_Click(object sender, EventArgs e) { string userName = txtUserName.Text.Trim(); string password = txtPassword.Text.Trim(); string email = txtEmail.Text.Trim(); // 检查是否有相同的用户名 string selectSql = "SELECT COUNT(*) FROM Users WHERE UserName=@UserName"; SqlCommand selectCmd = new SqlCommand(selectSql, DbConnection.GetConnection()); selectCmd.Parameters.AddWithValue("@UserName", userName); int count = Convert.ToInt32(selectCmd.ExecuteScalar()); if (count > 0) { Response.Write("<script>alert('该用户名已存在，请重新输入！')</script>"); return; } // 插入用户信息到数据库 string insertSql = "INSERT INTO Users(UserName,Password,Email) VALUES(@UserName,@Password,@Email)"; SqlCommand insertCmd = new SqlCommand(insertSql, DbConnection.GetConnection()); insertCmd.Parameters.AddWithValue("@UserName", userName); insertCmd.Parameters.AddWithValue("@Password", password); insertCmd.Parameters.AddWithValue("@Email", email); insertCmd.ExecuteNonQuery(); Response.Write("<script>alert('注册成功！')</script>"); } } } ``` 这段代码实现了一个简单的图书管理系统的注册页面，包括输入用户名、密码、确认密码和邮箱，并且检查是否有相同的用户名，最后将用户信息插入到数据库中。