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jmfyjnadsf ds ffdsgsdfhbcvbgfdgfcbcvbvcbvcmvc 来源： https://www.cnblogs.com/app45612/p/12432475.html

if (!IsPostBack) { //页面初次加载时执行这里的内容 DataSet ds = new DataSet(); //数据集 ds.Tables.Add("stu"); ds.Tables["stu"].Columns.Add("id",typeof(int)); ds.Tables["stu"].Columns.Add("name", typeof(string)); ds.Tables["stu"].Columns.Add("score", typeof(int)); ds.Tables["stu"].Rows.Add(new object[] { 1, "张三", 100 }); ds.Tables["stu"].Rows.Add(new object[] { 2, "李四", 100 }); ds.Tables["stu"].Rows.Add(new object[] { 3, "周五", 100 }); ds.Tables["stu"].Rows.Add(new object[] { 4, "郑六", 100 }); ds.Tables["stu"].Rows.Add(new object[] { 5, "甲七", 100 }); this.ListBox1.DataSource = ds.Tables["stu"]; this.ListBox1

object DataSetDemo1 { def main ( args : Array [ String ] ) : Unit = { val session = SparkSession . builder ( ) . master ( "local" ) . appName ( this . getClass . getSimpleName ) . getOrCreate ( ) import session . implicits . _ val dataSet : Dataset [ String ] = session . read . textFile ( "D:\\abc\\person\\input\\person2.txt" ) val ds = dataSet . map ( line = > { val splits = line . split ( "," ) Student ( splits ( 0 ) , splits ( 1 ) . toInt , splits ( 2 ) . toInt ) } ) val rdd : RDD [ String ] = session . sparkContext . makeRDD ( Array ( "aa" , "bb" , "cc" ) ) val ds2 : Dataset [ String ] =

TCPServer要用TCP的客户端来测试。POCO中TCP方式的Socket有： Poco::Net::ServerSocket Poco::Net::StreamSocket Poco::Net::DialogSocket Poco::Net::SecureServerSocket ---相对于SSL Poco::Net::SecureStreamSocket ---相对于SSL 1 ServerSocket svs(0); 2 TCPServer srv(new TCPServerConnectionFactoryImpl<EchoConnection>(), svs); 3 srv.start(); 4 SocketAddress sa("localhost", svs.address().port()); 5 StreamSocket ss1(sa); 6 std::string data("hello, world"); 7 ss1.sendBytes(data.data(), (int) data.size()); 8 char buffer[256]; 9 int n = ss1.receiveBytes(buffer, sizeof(buffer)); 10 cout<<"n = "<<n<<endl; 11 ss1.close();　　　 1

DataSet ds = new DataSet(); ds.ReadXml( new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(newxml[ 0 ].ToString()))); // Thread.Sleep(1); dataGridView1.DataSource = ds.Tables[ 0 ]; 笔记 具体原因未知。如果这样使用会造成ds未初始化的错误。 暂时解决办法 private DataTable d; private bool isT = false ; private void timer1_Tick( object sender, EventArgs e) { if (isT) { dataGridView1.DataSource = d; isT = false ; } } DataSet ds = new DataSet(); // 线程里面 d = ds.Tables[ 0 ]; isT = true ; 转载于:https://www.cnblogs.com/yueyue184/archive/2012/03/15/2397719.html 来源： https://blog.csdn.net/weixin_30628801/article/details/99064085