; myReader = myCommand.ExecuteReader(); //获取数据之前，必须不断的调用Read方法，它负责前进到下一条记录....; i++) { Response.Write("" + myReader.GetName(i) + ""); }...(""); //打印取到的数据 for (int i = 0; i < myReader.FieldCount; i++)...; myReader = myCommand.ExecuteReader(); 2： for (int i = 0; i < myReader.FieldCount; i++) {...Response.Write("" + myReader.GetName(i) + ""); } Response.Write(""); 3： while (myReader.Read
As SqlDataReader myreader = mycommand.ExecuteReader() DropDownList1.DataSource = myreader DropDownList1....DataTextField = "proName" DropDownList1.DataValueField = "proID" DropDownList1.DataBind() myreader.Close...As SqlDataReader myreader1 = mycity.ExecuteReader() DropDownList2.DataSource = myreader1 DropDownList2....DataTextField = "cityName" DropDownList2.DataValueField = "cityID" DropDownList2.DataBind() myreader1...As SqlDataReader myreader = mycommand.ExecuteReader() DropDownList2.DataSource = myreader DropDownList2
(Reader r){ this.r=r; } public int MyReader() throws IOException{ // 当缓冲区为空时...类的MyReader() private static void testMyReader() throws IOException { InputStreamReader in...= new FileReader("chx.txt"); MyReader mr = new MyReader(in); int ch=0; while...((ch=mr.MyReader())!...mbf = new MyReader(fr); String ch=null; while((ch=mbf.MyReaderLine())!
三、Go代码 package main import "golang.org/x/tour/reader" type MyReader struct{} // TODO: Add a Read([...]byte) (int, error) method to MyReader. // 向MyReader添加一个Read([]byte) (int, error)方法。...func (r MyReader) Read(b []byte) (int,error){ //赋值并返回 b[0] = 'A' return 1,nil } func main...() { reader.Validate(MyReader{}) } 四、参考资料 validate.go
, " Name " , myReader, " Sales " ); myReader.Close(); myConnection.Close... = myCommand.ExecuteReader(CommandBehavior.CloseConnection); Chart1.DataBindTable(myReader..., " Name " ); myReader.Close(); myConnection.Close(); Excel绑定： ?... = myCommand.ExecuteReader(CommandBehavior.CloseConnection); Chart1.DataBindTable(myReader..., " HOUR " ); myReader.Close(); myConnection.Close(); foreach (Series
()) { list.Add(reader(myReader));...} myReader.Close(); } catch (DbException...()) model = reader(myReader); myReader.Close();...} if (myReader.NextResult() && myReader.Read())...page.Count = myReader.GetInt64Ex(0); myReader.Close();
/sql语句 SqlCommand myCommand = new SqlCommand(sql, myConnection); myConnection.Open(); SqlDataReader myReader...; myReader = myCommand.ExecuteReader(); try { while(myReader.Read()) { Console.WriteLine(myReader.GetString...(0)); } } finally { myReader.Close(); myConnection.Close(); } } 3、下面说说它的用法： ①： 用法：ExecuteReader 方法存在的目的只有一个
MySqlCommand mySqlCommand = new MySqlCommand(sql, mysql); MySqlDataReader myReader...= mySqlCommand.ExecuteReader(); while (myReader.Read()) {...textBox1.AppendText(myReader.GetInt32(0) + ", " + myReader.GetString(1) + ", " + myReader.GetString(2...= mySqlCommand.ExecuteReader(); while (myReader.Read()) {...textBox1.AppendText(myReader.GetString(0)); } 运行测试 ?
= new SqlCommand(mycommandstring, myconnection); myconnection.Open(); SqlDataReader myreader...= mycommand.ExecuteReader(); if (myreader.Read()) { Session["name"] = myreader
“au_lname FROM Authors”, myConn) myConn.Open() Dim myReader...AuthorList.DataSource = myReader AuthorList.DataTextField = “au_lname” AuthorList.DataValueField...myConn.Close() myReader.Close() ‘Add the item at the first position.
= myCommand.ExecuteReader(); while ( myReader.Read() ) { DropDownList1.Items.Add( new ListItem( myReader...[“ItemName”].ToString(),myReader[“id”].ToString() ) );//增加Item //或者这样也能绑定， //DropDownList1.Items.Add...( new ListItem( myReader[1].ToString(),myReader[0].ToString() ) );//增加Item //都是要在知道Sql语句或者数据表结构的前提下才能这样绑定...= myCommand.ExecuteReader(); while ( myReader.Read() ) { DropDownList1.Items.Add( new ListItem( myReader...( new ListItem( myReader[1].ToString(),myReader[0].ToString() ) );//增加Item //都是要在知道Sql语句或者数据表结构的前提下才能这样绑定
package main import ( "fmt" "io" "os" ) type MyReader struct{} func Validate(r io.Reader...// TODO: Add a Read([]byte) (int, error) method to MyReader. func (mr MyReader) Read(b []byte) (n int...for ;i < len(b);i++ { b[i] = 'A' } return i, nil } func main() { Validate(MyReader
OleDbCommand myCommand = new OleDbCommand(mySelectQuery,myConnection); myConnection.Open(); OleDbDataReader myReader...; myReader = myCommand.ExecuteReader(); while (myReader.Read()) { creat_node(myReader.GetString(2...),t2,myReader.GetString(1)); } myReader.Close(); myConnection.Close(); } private void CreateProviderTreeBtn_Click
System.Data.OleDb命名空间下，可以调用OleDbDataReader类 4）在System.Data.OracleClient命名空间下，可以调用OracleDataReader类 实例： if (myreader.Read...()) { //myreader中有数据，表示给出的用户名和密码在数据库中有匹配记录 MessageBox.Show("登录成功");...//如果登录成功则取出用户名和等级填入下面的文本框中 textBox3.Text = myreader["username"].ToString(); textBox4....Text = myreader["level"].ToString(); } else { //myreader中没有数据，表示给出的用户名和密码至少有一个是错的
static void main(String[] args) { try { File myObj = new File("filename.txt"); Scanner myReader...= new Scanner(myObj); while (myReader.hasNextLine()) { String data = myReader.nextLine()...; System.out.println(data); } myReader.close(); } catch (FileNotFoundException e)
type MyReader struct{} func (mr *MyReader) Read(p []byte) (n int, err error) { // 实现了Read方法 } 在这里...，MyReader类型实现了Read方法，所以它实现了Reader接口。
include #include using std::cout; using std::string; using std::istringstream; /* myreader...to the contain of string. if the current pointer READ(>>) the non-number or error or endoffile the myreader...void common_way_to_use_istringstream_in_while() { cout << __func__ << "\n"; istringstream myreader...("1 2 3"); int n; while (myreader >> n) { cout << "read: " << n << "\n"; } cout
SqlCommand("select top 1 id from picture order by id desc", myConn) myCommand.Connection.Open() Dim myReader...As SqlDataReader=mycommand.executereader() if myReader.Read() then id=myReader("id") end if myconn.close
DropDownList1.DataSource=myReader;//myReader为ExecuteReader()的结果集 DropDownList1.DataTextField（DataValueField...） = “填充在myReader中的数据集，用哪个列填充就写哪个列名就ok 了”; DropDownList1.DataBind(); aspx页面上有三个DropDownList控件，后台数据库建表
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