obtained from the adapter;Close ();Return ds;//to go back to the data stored in the DS}4. Return SqlDataReader data stream via SQL statement///To call SqlCommandpublic static SqlDataReader GETSDR (String strSQL){Open ();SqlCommand com = new SqlCommand (strSQL, conn);Sdr=com. ExecuteReader (system.Data.CommandBehavior.CloseConnection);Return Sdr;s}5. Return DataView via SQL statement????????????????????????
dense, and more power-saving technology improvements.DDR3 's development cannot be said to be a smooth one, although the original standard was released in 2005 and applied to the Intel P35 "Bearlake" chipset in 2007, but it did not replace DDR2 as quickly as the industry had expected. This has also experienced a far-reaching financial crisis on SDRAM industry, not only make the DDR3 occupy the market slower, but also make DDR3 in the technology of the world's leading memory of the giant dream o
Summary of three methods for connecting. net MVC to the local database,. netmvc
. Net MVC connection data local database three methods
Public class HomeController: Controller {// GET:/Home/public ActionResult Index () {# region connect SQL function one SqlConnectionStringBuilder one = new SqlConnectionStringBuilder (); one. dataSource = "(local) \ sqlexpress"; one. initialCatalog = "xsgl1"; one. userID = "sa"; one. password = "a123456"; one. maxPoolSize = 512; SqlConnection sct = new SqlConne
property of the ConfigurationManager classpublic static SqlDataReader Getreader (String sql){SqlConnection conn = new SqlConnection (connstring);SqlCommand cmd = new SqlCommand (SQL, conn);Try{Conn. Open ();return CMD. ExecuteReader (commandbehavior.closeconnection);}catch (Exception ex){Throw ex;}}}Web. config plus node3. Write Entity access classes. The name of the entity Access class is generally the entity class name +service. Concrete action entities, encapsulating entities, returning enti
. Before that, you only need to set the corresponding relationship. There is no doubt that this can solve my needs. It took two days to complete the demo. by reading the information from the configuration file, the corresponding relationship, SQL statement, and target table name were separated, pass in to the function for data import.
The SQL statement and table name are both string, and the corresponding relationship can be stored in a hash table. It is best to store all three attributes in an
Document directory
Storage Device
Interface technical details
Read operations
Write operation
IP address optimized based on the Cyclone II Device
In the new and existing FPGA market, what is Cyclone? The II device extends the role of FPGA in low-cost and large-volume applications. FPGA is now no longer limited to peripheral applications and can execute many key processing tasks in the system. As FPGA is increasingly applied to the data path of the system, FPGA must have interfaces with
After one afternoon, I finally finished the result (similar to the Baidu smart prompt function). Because I was only familiar with AJAX technology, it took some time to do this, thick and thin hair .... Let's just look at the code first.
Front-end code:
MinimumPrefixLength = "1" ServiceMethod = "GetProductName" ServicePath = "WebService. asmx">
Background WebService code:
Using System;Using System. Web;Using System. Collections;Using System. Web. Services;Using System. Web. Services. Protocols;
. // SqlDataReader sdr = cmd can be written to other databases. endExecuteReader (iar); // The EndExecuteReader method ends the connection and stores the data in the data set while (sdr. read () {Console. writeLine (sdr [0] + "" + sdr [1]);} Console. readLine ();}}}Because the delay is 5 seconds, the output result is a
The execution efficiency of stored procedures is higher than that of separate SQL statements.
How to Write a stored procedure? The stored procedure is stored in the programmable directory of the database corresponding to SQL Server 2005.
For example, create a stored procedure
CopyCode The Code is as follows: Create procedure procnewsselectnewnews
As
Begin
Select top 10 N. ID, N. Title, N. createtime, C. name from news n
Inner join category C on N. caid = C. ID
Order by N. createtime DESC
End
e
{// Using is flexible and convenient. If you use con, you do not need to close it manually. The current connection is automatically closed.Using (SqlConnection con = new SqlConnection (conStr )){// Open the connectionCon. Open ();String character STR = "select * from ns_user where userID = @ myid and userName = @ myname ";SqlCommand cmd = new SqlCommand (reverse STR, con );// Use parameter serialization to prevent injection attacks.Cmd. Parameters. Add (new SqlParameter ("@ myid", myid ));Cmd.
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