经典代码计算机工程学院计算机信息管理专业

1、ADO.Net 经典代经典代码 mand+表数据 2 （ADO.Net 经典代经典代码 mand+表数据 2 （1SqlConnectionmyConnection=newSqlConnection(DataegratedSqlConnectionmyConnection=newSqlConnection(DataSource=.Initial egrated Security=True)mand = myComandText = select * from employeeSqlDataReadermyReaderwhile/MessageBox.Show(myReaderfname+dDB

2、 3 （DataRow+ 3 （DataRow+ 2SqlConnectionmyConnection=newSqlConnection(DataSource=.Initial egrated Security=True)SqlDataAdaptermyAdapter=newSqlDataAdapter(select*fromemployee, mandBuilder myBuilder = newDataSet myDataSet = new DataSet()myAdapter.Fill(myDataSet,olumnmykeys=newmykeys0=myDataSet.Tablesmy

3、employeetable.Columnsemp_id myDataSet.Tablesmyemployeetable.PrimaryKey = mykeysDataRow findRow = if (findRow != null)findRowfname = Tom findRowlname=ClonemyAdapter.Update(myDataSet,SqlDataAdaptermyAdapter=newSqlDataAdapter(select*fromemployee, DataSet myDataSet = new DataSet() myAdapter.Fill(myDataS

4、et,myemployeetable)foreach(DataRow/MessageBox.Show(myRecordfname+ +4 DataSet （新 5 DataSet （4 DataSet （新 5 DataSet （DataRow+ 3SqlConnectionmyConnection=newSqlConnection(DataSource=.Initial egrated Security=True)SqlDataAdaptermyAdapter=newSqlDataAdapter(select*fromstudent, mandBuilder myBuilder = newD

5、ataSet myDataSet = new DataSet()myAdapter.Fill(myDataSet,olumnmykeys=newmykeys0=SqlConnectionmyConnection=newSqlConnection(DataSource=.Initial egrated Security=True)SqlDataAdaptermyAdapter=newSqlDataAdapter(select*fromstudent, mandBuilder myBuilder = newDataSet myDataSet = new DataSet()myAdapter.Fil

6、l(myDataSet,DataRownewRow=myDataSet.Tablesstudenttable.NewRow() newRowStuNo = 10000001o=20000001 newRowStuName = TommyAdapter.Update(myDataSet, studenttable)经典代码 6：ExecuteScalar()SQL语句经典代码 7ExecuteNonQuery经典代码 6：ExecuteScalar()SQL语句经典代码 7ExecuteNonQuery方法直接调用SQL 语句4SqlConnectionmyConnection=newSqlCo

7、nnection(DataSource=.;Initial egrated Security=True);mand= mandText=UPDATEemployeeSETfname=TomWHEREemp_id=PMA42628M; rowAff =this.label2.Text = 所影响的数=+(rowAff.ToString(); SqlConnectionmyConnection=newSqlConnection(DataSource=.;Initial egrated Security=True);mand = myComandText=selectcount(*)fromempl

8、oyee;objectcountResultthis.label1.Text = Employee表的总数= + (myDataSet.Tablesstudenttable.PrimaryKey=stringDataRowfindRow=myDataSet.Tablesstudenttable.Rows.Find(currentStuNo) if (findRow != null)myAdapter.Update(myDataSet,studenttable)8XMLXML文件经典代码 108XMLXML文件经典代码 10调用 过程（mand+5SqlConnectionmyConnectio

9、n=newSqlConnection(DataSource=.Initial egrated Security=True)mand=mand(GetEmployee,mandType过SqlParameter em=newSqlParameter(id,SqlDbType.NChar,9) .Value =SqlDataReader myReader =this.textBox1.Text=myReaderfname.ToString() this.textBox2.Text=myReaderlname.ToString() DataSetmyDataSet=newDataSet() fore

10、ach(DataRowthis.listBox1.Items.Add(myRecordfname+ +MessageBox.Show(由ReadXml方法创建的表为SqlConnectionmyConnection=newSqlConnection(DataSource=.Initial egrated Security=True)SqlDataAdaptermyAdapter=newSqlDataAdapter(select*fromemployee, DataSet myDataSet = new DataSet() myAdapter.Fill(myDataSet,myemployeet

11、able) SQL 11 利用（6SqlConnectionSQL 11 利用（6SqlConnectionmyConnection=newSqlConnection(DataSource=.;Initial egrated Security=True);SqlDataAdapterclassAdapter=newSqlDataAdapter(select*fromclass,myConnection); SqlDataAdapter studentAdapter = new SqlDataAdapter(select * from student, DataSetmyDataSet=newc

12、lassAdapter.Fill(myDataSet, class); studentAdapter.Fill(myDataSet,student);DataRelationClassStuRelation=myDataSet.Relations.Add(classStu, foreach(DataRowyDataSet.Tablesclass.Rowsif foreach(DataRowstuRowinfindRow.GetChildRows(ClassStuRelation) SELECT*FROMemployeeWHERECREATEPROCEDUREGetEmployeeidnchar(9) SELECT*FROMemployeeWHEREemp_id=id GetEmployee2012年97Str=Data2012年97Str=DataSource=.SQL2005EXPRESS;Initial Catalog=StudentDB;Persist Security Info=True;UserSqlConnectionmyConnection = new SQLStr =Data Source=服务器名;Initial Catalog=数据库名;Persis