一个C# Access数据库操作类

一个C# Access数据库操作封装类，功能不太多，但基本够用，主要面向使用Access数据库的用户，可实现Access数据库连接、返回执行SQL 语句所影响数据的行数、获取结果集的第一行第一列、获得详细Access数据等，类可继续扩展，这个确实简单些：
 
     using System; 
    
     02 
     using System.Collections.Generic; 
    
     03 
     using System.Linq; 
    
     04 
     using System.Text; 
    
     05 
     using System.Data; 
    
     06 
     using System.Data.OleDb; 
    
     07 
     using System.Configuration; 
    
     08 
     namespace Aikeli.Show.Shopman 
    
     09 
     { 
    
     10 
         public static class OleDbHelper 
    
     11 
         { 
    
     12 
             private static OleDbConnection connection; 
    
     13 
             /// <summary> 
    
     14 
             /// 获得一个唯一的CONNECTION 实例 
    
     15 
             /// </summary> 
    
     16 
             public static OleDbConnection Connection 
    
     17 
             { 
    
     18 
                 get 
    
     19 
                 { 
    
     20 
                     string connectionstring = ConfigurationManager.ConnectionStrings["database"].ConnectionString; 
    
     21 
                     if (connection == null) 
    
     22 
                     { 
    
     23 
                         connection = new OleDbConnection(connectionstring); 
    
     24 
                         connection.Open(); 
    
     25 
                     } 
    
     26 
                     else if (connection.State == System.Data.ConnectionState.Closed) 
    
     27 
                     { 
    
     28 
                         connection.Open(); 
    
     29 
                     } 
    
     30 
                     else if (connection.State == System.Data.ConnectionState.Broken) 
    
     31 
                     { 
    
     32 
                         connection.Close(); 
    
     33 
                         connection.Open(); 
    
     34 
                     } 
    
     35 
                     return connection; 
    
     36 
                 } 
    
     37 
             } 
    
     38 
             /// 返回执行SQL 语句所影响数据的行数 
    
     39 
              public static int ExecuteCommand(string sql) 
    
     40 
             { 
    
     41 
                 OleDbCommand com = new OleDbCommand(sql, Connection); 
    
     42 
                 int result = com.ExecuteNonQuery(); 
    
     43 
                 return result; 
    
     44 
             } 
    
     45 
             /// 获取结果集的第一行第一列 
    
     46 
              public static int GetScalar(string sql) 
    
     47 
             { 
    
     48 
                 OleDbCommand com = new OleDbCommand(sql, Connection); 
    
     49 
                 int result = int.Parse(com.ExecuteScalar().ToString()); 
    
     50 
                 return result; 
    
     51 
             } 
    
     52 
             /// 获得第数据 
    
     53 
             public static DataTable GetDataSet(string sql) 
    
     54 
             { 
    
     55 
                 DataSet dataset = new DataSet(); 
    
     56 
                 OleDbCommand com = new OleDbCommand(sql, Connection); 
    
     57 
                 OleDbDataAdapter da = new OleDbDataAdapter(com); 
    
     58 
                 da.Fill(dataset); 
    
     59 
                 return dataset.Tables[0]; 
    
     60 
             } 
    
     61 
             public static OleDbDataReader GetReader(string sql) 
    
     62 
             { 
    
     63 
                 OleDbCommand com = new OleDbCommand(sql, Connection); 
    
     64 
                 OleDbDataReader reader = com.ExecuteReader(); 
    
     65 
                 return reader; 
    
     66 
             } 
    
     67 
         } 
    
     68 
     }
一个C# Access数据库操作类

猜你喜欢
