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
tryelse
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)
tryelse
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);
trycatch (exception ex) 
finally 
}public static dataset excuereturndataset(string sql,commandtype type,idataparameter pars)
sqldataadapter adpter = new sqldataadapter(com);
trycatch (exception ex) 
finally
}public static idatareader excuereturndatareader(string sql, idataparameter pars)
trycatch (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 int rowsaffected)
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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