我的DbHelper資料操作類

其實,微軟的企業庫中有乙個非常不錯的資料操作類了.但是,不少公司(起碼我遇到的幾個...),對一些"封裝"了些什麼的東西不太敢用,雖然我推薦過微軟的企業庫框架了...但是還是要"評估"...一評就是幾個月...而且,一些公司有的根本就是裸ado.net開發,或者自己封裝的資料庫操作類非常彆扭,很不好用.

這裡我給大家共享乙個我參照企業庫中的資料操作元件編碼風格寫的資料庫操作類,對使用它的程式設計師來說,編碼是很舒服滴(起碼我覺得很好撒).以下是**,很簡單的,沒有做任何多餘的封裝,只是改變了ado.net的編碼步驟,方便了具體開發資料庫操作**的程式設計師.

using system;

using system.data;
using system.data.common;
using system.configuration;
public class dbhelper
public dbhelper(string connectionstring)
public static dbconnection createconnection()
public static dbconnection createconnection(string connectionstring)
public dbcommand getstoredproccommond(string storedprocedure)
public dbcommand getsqlstringcommond(string sqlquery)
#region 增加引數
public void addparametercollection(dbcommand cmd, dbparametercollection dbparametercollection)
}public void addoutparameter(dbcommand cmd, string parametername, dbtype dbtype, int size)
public void addinparameter(dbcommand cmd, string parametername, dbtype dbtype, object value)
public void addreturnparameter(dbcommand cmd, string parametername, dbtype dbtype)
public dbparameter getparameter(dbcommand cmd, string parametername)
#endregion
#region 執行
public dataset executedataset(dbcommand cmd)
public datatable executedatatable(dbcommand cmd)
public dbdatareader executereader(dbcommand cmd)
public int executenonquery(dbcommand cmd)
public object executescalar(dbcommand cmd)
#endregion 
#region 執行事務
public dataset executedataset(dbcommand cmd,trans t)
public datatable executedatatable(dbcommand cmd, trans t)
public dbdatareader executereader(dbcommand cmd, trans t)
public int executenonquery(dbcommand cmd, trans t)
public object executescalar(dbcommand cmd, trans t)
#endregion
}public class trans : idisposable
}public dbtransaction dbtrans
}public trans()
public trans(string connectionstring)
public void commit()
public void rollback()
public void dispose()
public void colse()
}}

那麼如何使用它呢?下面我給出一些基本的使用示例,基本能滿足你大部分的資料庫操作需要了.

1)直接執行sql語句

dbhelper db = new dbhelper();

dbcommand cmd = db.getsqlstringcommond("insert t1 (id)values('haha')");
db.executenonquery(cmd);

2)執行儲存過程

dbhelper db = new dbhelper();

dbcommand cmd = db.getstoredproccommond("t1_insert");
db.addinparameter(cmd, "@id", dbtype.string, "heihei");
db.executenonquery(cmd);

3)返回dataset

dbhelper db = new dbhelper();

dbcommand cmd = db.getsqlstringcommond("select * from t1");
dataset ds = db.executedataset(cmd);

4)返回datatable

dbhelper db = new dbhelper();

dbcommand cmd = db.getsqlstringcommond("t1_findall");
datatable dt = db.executedatatable(cmd);

5)輸入引數/輸出引數/返回值的使用(比較重要哦)

dbhelper db = new dbhelper();

dbcommand cmd = db.getstoredproccommond("t2_insert");
db.addinparameter(cmd, "@timeticks", dbtype.int64, datetime.now.ticks);
db.addoutparameter(cmd, "@outstring", dbtype.string, 20);
db.addreturnparameter(cmd, "@returnvalue", dbtype.int32);
db.executenonquery(cmd);
string s = db.getparameter(cmd, "@outstring").value as string;//out parameter
int r = convert.toint32(db.getparameter(cmd, "@returnvalue").value);//return value

6)datareader使用

dbhelper db = new dbhelper();

dbcommand cmd = db.getstoredproccommond("t2_insert");
db.addinparameter(cmd, "@timeticks", dbtype.int64, datetime.now.ticks);
db.addoutparameter(cmd, "@outstring", dbtype.string, 20);
db.addreturnparameter(cmd, "@returnvalue", dbtype.int32);
using (dbdatareader reader = db.executereader(cmd))
string s = db.getparameter(cmd, "@outstring").value as string;//out parameter
int r = convert.toint32(db.getparameter(cmd, "@returnvalue").value);//return value

7)事務的使用.(專案中需要將基本的資料庫操作組合成乙個完整的業務流時,**級的事務是必不可少的哦)

pubic void dobusiness()

catch}}
public void d1(trans t)
public void d2(trans t)

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