gnss sdr

";Sqlcommand cmd = new sqlcommand (SQL, Conn );Sqlparameter pid = new sqlparameter ("@ PID", sqldbtype. INT );PID. value = PID;Cmd. Parameters. Add (PID );Conn. open ();Sqldatareader SDR = cmd. executereader ();While (SDR. Read ()){This. dropdownlist1.items. Add (New listitem (toadd + "" + SDR [1]. tostring (), SDR [0

See a post:SqlDataReader ShutdownEveryone seems confused about the link closure problem. Here we will explain it: No matter what xxDataReader is, It inherits the implementation of DataReader, so there are commonalities, so the title is titled DataReader. Case 1: The default link of DataReader is not closed. Sample Code:Static void Main (string [] args) { SqlConnection con = new SqlConnection ("server =.; database = MySpace; uid = sa; pwd = 123456 "); Con. Open (); SqlCommand com = new SqlComm

Configure the database connection string in WebConfig. The Code is as follows: Copy codeThe Code is as follows: Then obtain the connection string in Webform_1.aspx.cs and add the following reference;Copy codeThe Code is as follows: using System. Configuration;Using System. Data;Using System. Data. SqlClient; Code:Copy codeThe Code is as follows: SqlConnection con;Protected void Page_Load (object sender, EventArgs e){ConnectDB ();}Private void ConnectDB (){String ConString = ConfigurationManager.

CopyCode The Code is as follows: Private string toadd = "inline". { Sqlconnection conn = new sqlconnection ("Server =.; database = test; uid = sa; Pwd = ;"); String SQL = "select articlesgroup_id, groupname from articlesgroup where articlesgroup_parent_id = @ PID order by groupname "; Sqlcommand cmd = new sqlcommand (SQL, Conn ); Sqlparameter pid = new sqlparameter ("@ PID", sqldbtype. INT ); PID. value = PID; Cmd. Parameters. Add (PID ); Conn. open (); Sqldatareader

... 3. Finally, it is the provider. The program is actually a recursive algorithm.Private void getarticlecategory (string PID){Sqlconnection conn = new sqlconnection ("Server =.; database = test; uid = sa; Pwd = ;");String SQL = "select articlesgroup_id, groupname from articlesgroup where articlesgroup_parent_id = @ PID order by groupname ";Sqlcommand cmd = new sqlcommand (SQL, Conn );Sqlparameter pid = new sqlparameter ("@ PID", sqldbtype. INT );PID. value = PID;Cmd. Parameters. Add (PID );Con

= True"); - stringsql ="Select Id,categoryname from tb_infinite where [email protected]"; -SqlCommand cmd =NewSqlCommand (SQL, conn); -SqlParameter Pid =NewSqlParameter ("@pid", SqlDbType.Int); inPid.value =pid; - cmd. Parameters.Add (Pid); to Conn. Open (); +SqlDataReader SDR =cmd. ExecuteReader (); - while(SDR). Read ()) the { * This. DROPDOWNLIST1.IT

sqltest{class Program {static void Main (string[] args) {///connection Database String connection = "server= Pinchamp \\sqlexpress;database=db_test; Trusted_connection=true "; SqlConnection sc = new SqlConnection (connection); Sc. ConnectionString = connection; try {sc. Open (); Open the Database connection Console.WriteLine ("Already Open database connection!"); SqlCommand cmd = new SqlCommand ("SELECT * from Db_student", SC); SqlData

To configure the database connection string in Webconfig, the code is as follows: Copy Code code as follows: Then get the connection string inside the Webform_1.aspx.cs to add the following reference; Copy Code code as follows: Using System.Configuration; Using System.Data; Using System.Data.SqlClient; Code: Copy Code code as follows: SqlConnection con; protected void Page_Load (object sender, EventArgs e) { Connectdb ();

", sqldbtype.nvarchar,1000), New SqlParameter ("@PAGE_INDEX", sqldbtype.int,10), New SqlParameter ("@PAGE_SIZE", sqldbtype.int,10), New SqlParameter ("@ORDERTYPE", sqldbtype.int,2), New SqlParameter ("@ANDWHERE", sqldbtype.varchar,1000), New SqlParameter ("@ORDERFEILD", sqldbtype.varchar,100) }; Parms[0]. Value = "*";//Get all fields PARMS[1]. Value = pageindex;//Current page index PARMS[2]. Value = 10;//Page size PARMS[3]. Value = 0;//Ascending order PARMS[4]. Value = "";//Condition

("@FEILDS", sqldbtype.nvarchar,1000),New SqlParameter ("@PAGE_INDEX", sqldbtype.int,10),New SqlParameter ("@PAGE_SIZE", sqldbtype.int,10),New SqlParameter ("@ORDERTYPE", sqldbtype.int,2),New SqlParameter ("@ANDWHERE", sqldbtype.varchar,1000),New SqlParameter ("@ORDERFEILD", sqldbtype.varchar,100)};Parms[0]. Value = "*";//Get all fieldsPARMS[1]. Value = pageindex;//Current page indexPARMS[2]. Value = 10;//Page sizePARMS[3]. Value = 0;//Ascending orderPARMS[4]. Value = "";//Condition statementPAR

http://blog.csdn.net/idays021/article/details/49661855Class Program{private static string _connstr;static void Main (string[] args){_connstr = configurationmanager.connectionstrings["plmconnectionstring"]. ToString ();Sqldependency.start (_CONNSTR);//incoming connection string, initiating database-based snoopingUpdateGrid ();Console.read ();}private static void UpdateGrid (){using (SqlConnection connection = new SqlConnection (_CONNSTR)){Dependencies are based on a table, and the query statement

Tags: Tab cat object for CEP. SQL Open End Log 1 usingSystem;2 usingSystem.Data;3 usingSystem.Text;4 usingSystem.Windows.Forms;5 usingSystem.Data.SqlClient;6 namespaceusehasrows7 { 8 Public Partial classForm1:form9 { Ten PublicForm1 () One { A InitializeComponent (); - } - Private voidButton1_Click (Objectsender, EventArgs e) the { - Try - { -SqlConnection conn =NewSqlConnection ("server=.; Database=db_12;uid=sa;pwd="

Label: usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.UI;usingSystem.Web.UI.WebControls;usingSystem.Data;usingSystem.Data.SqlClient; Public Partial classMain:System.Web.UI.Page {protected voidPage_Load (Objectsender, EventArgs e) { intTotalpage; ListNewList(); Gv_stu. DataSource= Getstuinfo (Ten,2,' ', outtotalpage); Gv_stu. DataBind (); } PublicListintPageSizeintCurrentPage,stringCondition out inttotalpage) {ListNewList(); //strin

the database///////////////////////////////////////////////////////////* SqlCommand cmd = new Sqlcomm and ("SELECT * from Db_student", SC); SqlDataReader SDR = cmd. ExecuteReader (); Executes the Find record command while (SDR. Read ()) {Console.WriteLine ("{0}{1}{2}{3}", Sdr[0], sdr[1],

,params sqlparameter[] cmdparameter){Try{Close ();Open ();Object Object1;SqlCommand cmd = new SqlCommand ();PrepareCommand (CMD, conn, null, strSQL, cmdparameter);Object1 = cmd. ExecuteScalar ();Cmd. Parameters.clear ();return object1;}catch {Close ();Throw}}#endregion/* Execute SQL statement to get DataSet SqlDataReader Object */#region # #执行sql语句得到数据集sqlDataReader对象Gets the data result set returned by SQL after executionpublic static SqlDataReader ExecuteReader (string strSQL, params sqlparame

= new SqlParameter [] {New SqlParameter ("@ FEILDS", SqlDbType. NVarChar, 1000 ),New SqlParameter ("@ PAGE_INDEX", SqlDbType. Int, 10 ),New SqlParameter ("@ PAGE_SIZE", SqlDbType. Int, 10 ),New SqlParameter ("@ ORDERTYPE", SqlDbType. Int, 2 ),New SqlParameter ("@ ANDWHERE", SqlDbType. VarChar, 1000 ),New SqlParameter ("@ ORDERFEILD", SqlDbType. VarChar, 100)};Parms [0]. Value = "*"; // obtain all fieldsParms [1]. Value = pageIndex; // index of the current pageParms [2]. Value = 10; // page size

(); Sqldependency dependency =New sqldependency (command ); Dependency. onchange + = new onchangeeventhandler (dependency_onchange ); Sqldatareader SDR = command. executereader (); Console. writeline (); While (SDR. Read ()) { Console. writeline ("ID: {0} \ tuserid: {1} \ tmessage: {2}", SDR ["ID"]. tostring (), SDR