C 資料庫幫助類SqlHelper

using

system;
using
system.collections.generic;
using
system.linq;
using
system.web;
using
system.data.oledb;
using
system.data;
using
system.configuration;
using
system.data.sql;
using
system.data.sqlclient;
namespace
dal            
try                
else
return
false
;            }
catch (exception e) 
finally
}//////
執行sql語句的查詢，返回查詢的數量。異常返回-1.
///        ///
//////
///public
static
int excequery(string
sql, commandtype type, idataparameter pars)
try                
else
return -1
;            }
catch (exception e) 
finally
}//////
執行查詢，返回乙個資料集
///        ///
//////
public
static dataset excuereturndataset(string
sql, idataparameter pars)
sqldataadapter adpter = new
sqldataadapter(com);
try            
catch (exception ex) 
finally
}public
static dataset excuereturndataset(string
sql,commandtype type,idataparameter pars)
sqldataadapter adpter = new
sqldataadapter(com);
try            
catch (exception ex) 
finally
}public
static idatareader excuereturndatareader(string
sql, idataparameter pars)
try            
catch
(exception ex)
finally
}//////
執行儲存過程，返回影響的行數        
///        ///
儲存過程名
///儲存過程引數
///影響的行數
///public
static
int runprocedure(string storedprocname, idataparameter parameters, out
introwsaffected)
command.parameters.add(
"@return
","").direction =parameterdirection.returnvalue;
rowsaffected =command.executenonquery();
result = (int)command.parameters["
@return
"].value;
connection.close();
return
result;}}
//////
執行儲存過程
///        ///
儲存過程名
///儲存過程引數
///dataset結果中的表名
///dataset
public
static dataset runprocedure(string storedprocname, idataparameter parameters, string
tablename)
sqldataadapter adpter = new
sqldataadapter(com);
adpter.fill(dataset, tablename);
return
dataset;}}
//////
執行查詢語句，返回dataset
///        ///
查詢語句
///dataset
public dataset query(string
sqlstring)
catch
(system.data.sqlclient.sqlexception ex)
return
ds;            }}}
}

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