Asp.net(c#)數(shù)據(jù)庫(kù)操作類

1、A(c#)數(shù)據(jù)庫(kù)操作類usingSystem;usingSystem.Data;usingSystem.Configuration;usingSystem.Web;usingSystem.Web.Security;usingSystem.Web.UI;usingSystem.Web.Ul.WebControls;usingSystem.Web.Ul.WebControls.WebParts;usingSystem.Web.Ul.HtmIControls;usingSystem.Data.SqlClient;namespaceMysqlserver/<summary>/SqlServ

2、erDataBase的摘要說(shuō)明/</summary>publicclassSqlServerDataBaseprivatestringstrError=null;privateintintCount=0;publicSqlServerDataBase。/TOD在此處添加構(gòu)造函數(shù)邏輯/<summary>/公開(kāi)方法DBConn，返回?cái)?shù)據(jù)庫(kù)連接/</summary>/<returns>v/returns>publicSqlConnectionDBconn()stringstrConn="Server=(local);Database=G

3、lobalMeetings;Uid=sa;pwd="tryreturnnewSqlConnection(strConn);catch(Exception)returnnull;/<summary>/公開(kāi)屬性ErrorMessage，返回錯(cuò)誤信息/</summary>publicstringErrorMessagegetreturnstrError;/<summary>/根據(jù)查詢語(yǔ)句從數(shù)據(jù)庫(kù)檢索數(shù)據(jù)/</summary>/vparamname="strSelect">查詢語(yǔ)句</param>/vpar

4、amname="SqlConn">數(shù)據(jù)庫(kù)連接</param>/<returns>有數(shù)據(jù)則返回DataSet對(duì)象，否則返回null</returns>publicDataSetSelect(stringSelectString,SqlConnectionsqlConn)strError=""SqlConnectionconn;if(sqlConn=null)conn=DBconn();elseconn=sqlConn;try/若數(shù)據(jù)庫(kù)連接的當(dāng)前狀態(tài)是關(guān)閉的，則打開(kāi)連接if(conn.State=Connection

5、State.Closed)conn.Open();SqlDataAdaptermySqlDataAdapter=newSqlDataAdapter();SqlCommandselectCommand=newSqlCommand(SelectString,conn);selectCommand.CommandType=CommandType.Text;mySqlDataAdapter.SelectCommand=selectCommand;DataSetmyDS=newDataSet();mySqlDataAdapter.Fill(myDS);returnmyDS;catch(Exception

6、e)strError="數(shù)據(jù)檢索失?。?quot;+e.Message;returnnull;finallyif(conn.State!=ConnectionState.Closed)conn.Close();/<summary>/更新數(shù)據(jù)庫(kù)/</summary>/vparamname="UpdateString">UpdateSql語(yǔ)句</param>/vparamname="SqlConn">數(shù)據(jù)庫(kù)連接</param>/<returns>更新成功返回true</r

7、eturns>publicboolUpdate(stringUpdateString,SqlConnectionSqlConn)returnudiDataBase(UpdateString,SqlConn);/<summary>/從數(shù)據(jù)庫(kù)中刪除數(shù)據(jù)/</summary>/vparamname="DeleteString">DeleteSql語(yǔ)句</param>/vparamname="SqlConn">數(shù)據(jù)庫(kù)連接</param>III<returns>刪除成功返回true<

8、;/returns>publicboolDelete(stringDeleteString,SqlConnectionSqlConn)returnudiDataBase(DeleteString,SqlConn);/<summary>/把數(shù)據(jù)插入數(shù)據(jù)庫(kù)/</summary>/vparamname="InsertString">InsertSql語(yǔ)句</param>/vparamname="SqlConn">數(shù)據(jù)庫(kù)連接</param>/<returns>插入成功返回true<

9、;/returns>publicboolInsert(stringInsertString,SqlConnectionSqlConn)returnudiDataBase(InsertString,SqlConn);/<summary>/根據(jù)Sql語(yǔ)句更新數(shù)據(jù)庫(kù)/</summary>/vparamname="UDIString">更新語(yǔ)句</param>/vparamname="SqlConn">數(shù)據(jù)庫(kù)連接</param>/vreturns>更新成功則返回truev/returns&g

10、t;publicbooludiDataBase(stringUDIString,SqlConnectionSqlConn)strError=""SqlConnectionconn;if(SqlConn=null)conn=DBconn();elseconn=SqlConn;tryif(conn.State=ConnectionState.Closed)conn.Open();SqlCommandcmd=newSqlCommand(UDIString,conn);cmd.CommandType=CommandType.Text;intCount=cmd.ExecuteNonQ

11、uery();return!(intCount<1);catch(Exceptione)strError="更新數(shù)據(jù)庫(kù)失?。?quot;+e.Message;returnfalse;finallyif(conn.State!=ConnectionState.Closed)conn.Close();兩種調(diào)用方法1、stringstrUserPsw=UserPsw.Text.Trim();stringUserPassword=System.Web.Security.FormsAuthentication.HashPasswordForStoringlnConfigFile(strU

12、serPsw,"MD5");/md5加密SqlServerDataBaseobj=newSqlServerDataBase();objnsert("insertintoasUserInfo(UserName,UserPassword,Question,Answer,CreateTime)values('"+UserName.Text.Trim()+"','"+UserPassword+"','"+Question.Text.Trim()+"','"+Answer.Text.Trim()+"','"+DateTime.Now.ToString()+"')",null);2、privateboolIsUsernameExist(stringstrUsername)boolbRet=true;SqlServerDataBasedb=newSqlServerDataBase()