ADO.NET數據庫操作基礎類

using System; 
using System.Collections; 
using System.Collections.Specialized; 
using System.Runtime.Remoting.Messaging; 
using System.Data; 
using System.Data.SqlClient; 
using System.Configuration; 
namespace LTP.SQLServerDAL 
{ 
 ///  
 /// ADO.NET數據庫操作基礎類。 
 ///  
 public abstract class DbManagerSQL 
 { 
  //數據庫連接字符串 
  protected static string connectionString = ConfigurationSettings.AppSettings["ConnectionString"];  
  public DbManagerSQL() 
  { 
   // 
   // TODO: 在此處添加構造函數邏輯 
   // 
  } 
  ///  
  /// 執行SQL語句，返回影響的記錄數 
  ///  
  ///  
  ///  
  public static int ExecuteSql(string SQLString) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   {     
    using (SqlCommand cmd = new SqlCommand(SQLString,connection)) 
    { 
     try 
     {   
      connection.Open(); 
      int rows=cmd.ExecuteNonQuery(); 
      return rows; 
     } 
     catch(System.Data.SqlClient.SqlException E) 
     {     
      throw new Exception(E.Message); 
     } 
    }     
   } 
  } 
  ///  
  /// 執行兩條SQL語句，實現數據庫事務。 
  ///  
  ///  
  ///  
  public static void ExecuteSqlTran(string SQLString1,string SQLString2) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    connection.Open(); 
    SqlCommand cmd = new SqlCommand(); 
    cmd.Connection=connection;     
    SqlTransaction tx=connection.BeginTransaction();    
    cmd.Transaction=tx;     
    try 
    {      
     cmd.CommandText=SQLString1; 
     cmd.ExecuteNonQuery(); 
     cmd.CommandText=SQLString2; 
     cmd.ExecuteNonQuery();      
     tx.Commit();      
    } 
    catch(System.Data.SqlClient.SqlException E) 
    {   
     tx.Rollback(); 
     throw new Exception(E.Message); 
    } 
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    }  
   } 
  }  
  ///  
  /// 執行多條SQL語句，實現數據庫事務，每條語句以“;”分割。 
  ///  
  ///  
  public static void ExecuteSqlTran(string SQLStringList) 
  { 
   using (OdbcConnection conn = new OdbcConnection(connectionString)) 
   { 
    conn.Open(); 
    OdbcCommand cmd = new OdbcCommand(); 
    cmd.Connection=conn;     
    OdbcTransaction tx=conn.BeginTransaction();    
    cmd.Transaction=tx;     
    try 
    {    
     string [] split= SQLStringList.Split(new Char [] { ’;’}); 
     foreach (string strsql in split)  
     { 
      if (strsql.Trim()!="") 
      { 
       cmd.CommandText=strsql; 
       cmd.ExecuteNonQuery(); 
      } 
     }        
     tx.Commit();      
    } 
    catch(System.Data.Odbc.OdbcException E) 
    {   
     tx.Rollback(); 
     throw new Exception(E.Message); 
    } 
   } 
  } 
  ///  
  /// 執行帶一個存儲過程參數的的SQL語句。 
  ///  
  ///  
  ///  
  ///  
  public static int ExecuteSql(string SQLString,string content) 
  {     
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlCommand cmd = new SqlCommand(SQLString,connection);   
    System.Data.SqlClient.SqlParameter  myParameter = new System.Data.SqlClient.SqlParameter ( "@content", SqlDbType.NText); 
    myParameter.Value = content ; 
    cmd.Parameters.Add(myParameter); 
    try 
    { 
     connection.Open(); 
     int rows=cmd.ExecuteNonQuery(); 
     return rows; 
    } 
    catch(System.Data.SqlClient.SqlException E) 
    {     
     throw new Exception(E.Message); 
    } 
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    }  
   } 
  }   
  ///  
  /// 向數據庫裏插入圖像格式的字段 
  ///  
  ///  
  ///  
  ///  
  public static int ExecuteSqlInsertImg(string strSQL,byte[] fs) 
  {   
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlCommand cmd = new SqlCommand(strSQL,connection);  
    System.Data.SqlClient.SqlParameter  myParameter = new System.Data.SqlClient.SqlParameter ( "@fs", SqlDbType.Image); 
    myParameter.Value = fs ; 
    cmd.Parameters.Add(myParameter); 
    try 
    { 
     connection.Open(); 
     int rows=cmd.ExecuteNonQuery(); 
     return rows; 
    } 
    catch(System.Data.SqlClient.SqlException E) 
    {     
     throw new Exception(E.Message); 
    } 
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    }  
     
   } 
  } 
  ///  
  /// 執行一條計算查詢結果語句，返回查詢結果（整數）。 
  ///  
  ///  
  ///  
  public static int GetCount(string strSQL) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlCommand cmd = new SqlCommand(strSQL,connection);     
    try 
    { 
     connection.Open(); 
     SqlDataReader result = cmd.ExecuteReader(); 
     int i=0; 
     while(result.Read()) 
     { 
      i=result.GetInt32(0); 
     } 
     result.Close();     
     return i; 
    } 
    catch(System.Data.SqlClient.SqlException e) 
    {         
     throw new Exception(e.Message); 
    }  
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    } 
   } 
  }  
  ///  
  /// 執行一條計算查詢結果語句，返回查詢結果（object）。 
  ///  
  ///  
  ///  
  public static object GetSingle(string SQLString) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlCommand cmd = new SqlCommand(SQLString,connection);   
    try 
    { 
     connection.Open(); 
     object obj = cmd.ExecuteScalar(); 
     if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value))) 
     {      
      return null; 
     } 
     else 
     { 
      return obj; 
     }     
    } 
    catch(System.Data.SqlClient.SqlException e) 
    {     
     throw new Exception(e.Message); 
    } 
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    } 
   } 
  } 
  ///  
  /// 執行查詢語句，返回SqlDataReader 
  ///  
  ///  
  ///  
  public static SqlDataReader ExecuteReader(string strSQL) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlCommand cmd = new SqlCommand(strSQL,connection);  
    SqlDataReader myReader;    
    try 
    { 
     connection.Open();  
     myReader = cmd.ExecuteReader(); 
     return myReader; 
    } 
    catch(System.Data.SqlClient.SqlException e) 
    {         
     throw new Exception(e.Message); 
    }   
    finally 
    { 
     cmd.Dispose(); 
     connection.Close(); 
    }  
   } 
  }   
  ///  
  /// 執行查詢語句，返回DataSet 
  ///  
  ///  
  ///  
  public static DataSet Query(string SQLString) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    DataSet ds = new DataSet(); 
    try 
    { 
     connection.Open(); 
     SqlDataAdapter command = new SqlDataAdapter(SQLString,connection);     
     command.Fill(ds,"ds"); 
    } 
    catch(System.Data.SqlClient.SqlException ex) 
    {     
     throw new Exception(ex.Message); 
    }    
    return ds; 
   } 
    
  } 


  #region 存儲過程操作 

  ///  
  /// 運行存儲過程 
  ///  
  ///  
  ///  
  ///  
  public static SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters ) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    SqlDataReader returnReader; 
    connection.Open(); 
    SqlCommand command = BuildQueryCommand( connection,storedProcName, parameters ); 
    command.CommandType = CommandType.StoredProcedure; 

    returnReader = command.ExecuteReader(); 
    //Connection.Close(); 
    return returnReader; 
   } 
  } 
  private static SqlCommand BuildQueryCommand(SqlConnection connection,string storedProcName, IDataParameter[] parameters) 
  { 
    
    SqlCommand command = new SqlCommand( storedProcName, connection ); 
    command.CommandType = CommandType.StoredProcedure; 
    foreach (SqlParameter parameter in parameters) 
    { 
     command.Parameters.Add( parameter ); 
    } 
    return command; 
    
  }   
  public static DataSet RunProcedure(string storedProcName, IDataParameter[] parameters, string tableName ) 
  { 
   using (SqlConnection connection = new SqlConnection(connectionString)) 
   { 
    DataSet dataSet = new DataSet(); 
    connection.Open(); 
    SqlDataAdapter sqlDA = new SqlDataAdapter(); 
    sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters ); 
    sqlDA.Fill( dataSet, tableName ); 
    connection.Close(); 

    return dataSet; 
   } 
  } 

  #endregion  
 } 
}