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上传时间: 2009-10-18
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using System.Text; using System.Data.Common; using System.Data; using System.Configuration; namespace HomeAndSchool.DAL { public class DBHelper { private static string dbProviderName = ConfigurationManager.AppSettings["DbHelperProvider" ]; private static string dbConnectionString = ConfigurationManager.ConnectionStrings["DbHelperConnectionString"].ToString(); private DbConnection connection; public DBHelper() { this.connection = CreateConnection(DBHelper.dbConnectionString); } public DBHelper(string connectionString) { this.connection = CreateConnection(connectionString); } /// /// 获得DbConnection /// /// public static DbConnection CreateConnection() { DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DBHelper.dbProviderName); DbConnection dbconn = dbfactory.CreateConnection(); dbconn.ConnectionString = DBHelper.dbConnectionString; return dbconn; } /// /// 获得DbConnection /// /// connectionString /// public static DbConnection CreateConnection(string connectionString) { DbProviderFactory dbfactory = DbProviderFactories.GetFactory(DBHelper.dbProviderName); DbConnection dbconn = dbfactory.CreateConnection(); dbconn.ConnectionString = connectionString; return dbconn; } /// /// 执行的存储过程 /// /// /// public DbCommand GetStoredProcCommond(string storedProcedure) { DbCommand dbCommand = connection.CreateCommand(); dbCommand.CommandText = storedProcedure; dbCommand.CommandType = CommandType.StoredProcedure; return dbCommand; } /// /// 执行的sql语句 /// /// /// public DbCommand GetSqlStringCommond(string sqlQuery) { DbCommand dbCommand = connection.CreateCommand(); dbCommand.CommandText = sqlQuery; dbCommand.CommandType = CommandType.Text; return dbCommand; } //增加输入参数#region 增加参数 public void AddParameterCollection(DbCommand cmd, DbParameterCollection dbParameterCollection) { foreach (DbParameter dbParameter in dbParameterCollection) { cmd.Parameters.Add(dbParameter); } } /// /// 增加输出参数 适用于存储过程 /// /// cmd对象 /// 参数名 /// 参数类型 /// 参数大小 public void AddOutParameter(DbCommand cmd, string parameterName, DbType dbType, int size) { DbParameter dbParameter = cmd.CreateParameter(); dbParameter.DbType = dbType; dbParameter.ParameterName = parameterName; dbParameter.Size = size; dbParameter.Direction = ParameterDirection.Output; cmd.Parameters.Add(dbParameter); } /// /// 增加参数列表 /// /// CMD对象 /// 参数名 /// 参数类型 /// 参数值 ..... ...展开收缩
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