标签：bin 实体 连接字符串 反序列化 serve memory tail 禁用 ret
本文demo下载地址：http://www.wisdomdd.cn/Wisdom/resource/articleDetail.htm?resourceId=1068
实例使用C# 实现基于角色的权限菜单管理系统， 管理员可以添加用户，删除用户, 添加分组，删除分组, 添加角色，删除角色，为角色关联权限等功能, 管理员用户自定义各个操作员的权限菜单标题
项目对应的实例代码可以通过右侧【下载实例】按钮获取
开发工具: VS2012 数据库: SQLServer
【项目包含内容】(见下图):
【实例代码】
【DBScript】 脚本
【WinForm中实现基于角色的权限菜单详解.txt】 代码详解
【实例简介】
C# WinForm中实现基于角色的权限菜单的完整源码，数据库脚本在DBscript目录下，在sql server 依次执行如下脚本即可
执行完毕后 修改下 app.config中的数据库连接串 为你本机的即可
【实例截图】
下面为管理员登陆后的效果
管理员账号：admin
密码：666666
下面为普通用户登陆后的效果：
普通用户名：user 密码 111111
【核心代码】
/// <summary>/// 根据操作员名称和密码获取操作员实体/// </summary>/// <param name="name">操作员名称</param>/// <param name="pwd">操作员密码</param>/// <returns>操作员实体</returns>public Model.Operator GetOperatorInfoByName(string name, string pwd){//SQL命令string sqltxt = string.Format("Select Id, OperatorName, Password, RightsList, State From Operator Where OperatorName = ‘{0}‘ And Password = ‘{1}‘", name, pwd);//创建操作员实体Model.Operator tmpOperator = new Model.Operator();// 转换数据库存储的 二进制数据为 Byte[] 数组 以便进而转换为操作员权限集合// 从配置文件读取连接字符串string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;// 执行 SQL 命令using (SqlConnection conn = new SqlConnection(connectionString)){SqlCommand cmd = new SqlCommand(sqltxt, conn);conn.Open();using (SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection |CommandBehavior.SingleResult |CommandBehavior.SingleRow)){if (myReader.Read()){//将数据集转换成实体集合tmpOperator.Id = Convert.ToInt32(myReader["Id"]);tmpOperator.ModelName = Convert.ToString(myReader["OperatorName"]);tmpOperator.Password = Convert.ToString(myReader["Password"]);tmpOperator.State = Convert.ToBoolean(myReader["State"]);// 读取权限集合System.Data.SqlTypes.SqlBytes bytes = myReader.GetSqlBytes(3); // 只能指定列序号// 将流反序列化为权限集合对象BinaryFormatter bf = new BinaryFormatter();if (!bytes.IsNull)tmpOperator.RightsCollection = (bf.Deserialize(bytes.Stream) as Dictionary<string, Model.Rights>);//else// throw new Exception(string.Format("操作员 [{0}] 没有任何权限，禁止登录！", tmpOperator.ModelName));}else//如果没有读取到内容则抛出异常throw new Exception("登录名称或用户密码不正确！");}}// 如果操作员已经被禁用if (!tmpOperator.State)throw new Exception(string.Format("操作员 [{0}] 已被禁用，请与管理员联系！", tmpOperator.ModelName));// 返回结果return tmpOperator;}/// <summary>/// 添加操作员/// </summary>/// <param name="addOperator">要添加的操作员实体</param>/// <returns>True:成功/False:失败</returns>public bool AddOperator(Model.Operator addOperator){// 验证密码长度if (addOperator.Password.Trim().Length < 6)throw new Exception("用户密码长度不能小于六位！");// 转换操作员权限集合为数据库可存取的 Byte[] 数组MemoryStream ms = new MemoryStream();BinaryFormatter bf = new BinaryFormatter();bf.Serialize(ms, addOperator.RightsCollection);byte[] rigthsByteArray = new byte[(int)(ms.Length)];ms.Position = 0;ms.Read(rigthsByteArray, 0, (int)(ms.Length));ms.Close();// 拼接 SQL 命令string sqlTxt = "Insert Into Operator (OperatorName, Password, RightsList, State) Values ""(@OperatorName, @Password, @RightsList, @State)";// 从配置文件读取连接字符串string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;// 执行 SQL 命令using (SqlConnection conn = new SqlConnection(connectionString)){SqlCommand cmd = new SqlCommand(sqlTxt, conn);SqlParameter prm1 = new SqlParameter("@OperatorName", SqlDbType.NVarChar, 50);prm1.Value = addOperator.ModelName;SqlParameter prm2 = new SqlParameter("@Password", SqlDbType.NVarChar,50);prm2.Value = addOperator.Password;SqlParameter prm3 = new SqlParameter("@RightsList", SqlDbType.VarBinary, rigthsByteArray.Length,ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, rigthsByteArray);SqlParameter prm4 = new SqlParameter("@State", SqlDbType.Bit);prm4.Value = addOperator.State;cmd.Parameters.AddRange(new SqlParameter[] { prm1, prm2, prm3, prm4 });conn.Open();if (cmd.ExecuteNonQuery() >= 1)return true;elsereturn false;}}/// <summary>/// 删除操作员/// </summary>/// <param name="id">要删除的操作员 ID</param>/// <returns>True:成功/False:失败</returns>public bool DeleteOperatorByID(int id){// 删除单个信息 SQL 命令string sqlTxt = string.Format("Delete From Operator Where Id = {0}", id);// 创建 SQL 执行对象DBUtility.AbstractDBProvider dbProvider = DBUtility.AbstractDBProvider.Instance();// 执行 删除操作int rowsAffected;dbProvider.RunCommand(sqlTxt, out rowsAffected);if (rowsAffected >= 1)return true;elsereturn false;}/// <summary>/// 修改操作员/// </summary>/// <param name="currentOperator">要修改的操作员实体</param>/// <returns>True:成功/False:失败</returns>public bool ModifyOperator(Model.Operator currentOperator){// 验证密码长度if (currentOperator.Password.Trim().Length < 6)throw new Exception("用户密码长度不能小于六位！");// 转换操作员权限集合为数据库可存取的 Byte[] 数组MemoryStream ms = new MemoryStream();BinaryFormatter bf = new BinaryFormatter();bf.Serialize(ms, currentOperator.RightsCollection);byte[] rigthsByteArray = new byte[(int)(ms.Length)];ms.Position = 0;ms.Read(rigthsByteArray, 0, (int)(ms.Length));ms.Close();// 拼接 SQL 命令string sqlTxt = "Update Operator Set OperatorName = @OperatorName, ""Password = @Password, RightsList = @RightsList, State = @State Where Id = @Id";// 从配置文件读取连接字符串string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;// 执行 SQL 命令using(SqlConnection conn = new SqlConnection(connectionString)){SqlCommand cmd = new SqlCommand(sqlTxt, conn);SqlParameter prm1 = new SqlParameter("@OperatorName", SqlDbType.NVarChar, 50);prm1.Value = currentOperator.ModelName;SqlParameter prm2 = new SqlParameter("@Password", SqlDbType.NVarChar,50);prm2.Value = currentOperator.Password;SqlParameter prm3 = new SqlParameter("@RightsList", SqlDbType.VarBinary, rigthsByteArray.Length,ParameterDirection.Input, false, 0, 0, null, DataRowVersion.Current, rigthsByteArray);SqlParameter prm4 = new SqlParameter("@State", SqlDbType.Bit);prm4.Value = currentOperator.State;SqlParameter prm5 = new SqlParameter("@Id", SqlDbType.Int);prm5.Value = currentOperator.Id;cmd.Parameters.AddRange(new SqlParameter[] { prm1, prm2, prm3, prm4, prm5 });conn.Open();if (cmd.ExecuteNonQuery() >= 1)return true;elsereturn false;}}/// <summary>/// 获取所有操作员信息/// </summary>/// <returns>操作员实体集合</returns>public Dictionary<string, Model.Operator> GetAllOperatorInfo(){//SQL命令string sqltxt = "Select Id, OperatorName, Password, RightsList, State From Operator";//创建操作员实体集合Dictionary<string, Model.Operator> operatorCollection = newDictionary<string, Model.Operator>();//定义操作员实体Model.Operator tmpOperator = null;// 转换数据库存储的 二进制数据为 Byte[] 数组 以便进而转换为操作员权限集合// 从配置文件读取连接字符串string connectionString = ConfigurationManager.ConnectionStrings["SQLSERVER"].ConnectionString;// 执行 SQL 命令using (SqlConnection conn = new SqlConnection(connectionString)){SqlCommand cmd = new SqlCommand(sqltxt, conn);conn.Open();using (SqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)){while (myReader.Read()){// 创建操作员实体tmpOperator = new Model.Operator();//将数据集转换成实体集合tmpOperator.Id = Convert.ToInt32(myReader["Id"]);tmpOperator.ModelName = Convert.ToString(myReader["OperatorName"]);tmpOperator.Password = Convert.ToString(myReader["Password"]);tmpOperator.State = Convert.ToBoolean(myReader["State"]);// 读取权限集合System.Data.SqlTypes.SqlBytes bytes = myReader.GetSqlBytes(3); // 只能指定列序号// 将流反序列化为权限集合对象BinaryFormatter bf = new BinaryFormatter();if (!bytes.IsNull)tmpOperator.RightsCollection = (bf.Deserialize(bytes.Stream) as Dictionary<string, Model.Rights>);// 添加到操作员实体集合operatorCollection.Add(tmpOperator.ModelName, tmpOperator);}}}// 返回结果return operatorCollection;}/// <summary>/// 根据操作员名称校验操作员是否存在/// </summary>/// <param name="operatorName">操作员名称</param>/// <returns>True:存在/Flase:不存在</returns>public bool CheckOperatorExist(string operatorName){//创建查询信息的 SQLstring sqlTxt = string.Format("Select Count(*) From Operator Where OperatorName = ‘{0}‘",operatorName);//创建SQL执行对象DBUtility.AbstractDBProvider dbProvider = DBUtility.AbstractDBProvider.Instance();//执行查询操作int result = Convert.ToInt32(dbProvider.RunCommand(sqlTxt));if (result >= 1)return true;elsereturn false;}#endregion |
标签：bin 实体 连接字符串 反序列化 serve memory tail 禁用 ret
原文地址：https://www.cnblogs.com/lg100010/p/8971744.html
