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=yes;imex=1; '"; stringconnstr2007 ="Provider=microsoft.ace.oledb.12.0;data source="+ Server.MapPath (FileName) +"; Extended properties=\ "Excel 12.0; Hdr=yes\ ""; OleDbConnection Conn; if(Fileextension.tolower () = =". xls") {Conn=NewOleDbConnection (connstr2003); } Else{conn=NewOleDbConnection (connstr2007); } conn. Open (); stringsql ="select * FROM [sheet1$]"; OleDbCommand cmd=NewOleDbCommand (SQL, conn); DataTable DT=NewDataTable (); OleDbData

1.ASP. NET Operations Database: Asp. NET data manipulation methods commonly used: A. ExecuteReader () Returns a SqlDataReader object or OleDbDataReader object, with each return or operation directing a record to be saved in the server's memory. In the case of a dataset, the specific, faster access capability is often used for query operations. B.executenonquery () C.executescalar () returns the object type. If you are executing a SELECT, the result is the first row after the query, the first co

SqlParameter ("@PassWord ", Userinfo.password)}; SUSSU statement String sql = @ "SELECT * FROM [User_info] WHERE userid= @UserID and PassWord = @PassWord"; Put the parameter into the statement DataTable table = sqlhelper.executequery (sql, Sqlparams, commandtype.text); Returns the return table value; SQLHelper public class SQLHelper { private SqlConnection conn = null; Private SqlCommand cmd = null; Private S

SqlConnection is done on the premise of shutting down the SqlDataReader, or it is necessary to manually close the SqlDataReader. and return to the SqlDataReader, and close it again, how to do? Some netizens put forward: before return reader, first close reader, that is, reader. Close (); In fact, this is not possible, will report the same error as before, before reading the data, has been closed. CommandBehavior.CloseConnection is used to close the database connection, which is for sure, but

Tags: WinForm style class blog code httpIn c#2010, how do you save and access the connection string for the database?To add the App. Config file under WinForm, add the Web. config file under ASP.1. After opening the configuration file, add the relevant code as follows:"1.0" encoding="utf-8"?>"myconn" connectionstring="Data source=.;i Nitial Catalog=northwind; Persist Security info=true; User Id=sa; password="/> 2. Add a using System.Configuration, and right-click on the item "Add Reference"

Main (string[] args) { Establish a connection SqlConnection con = new SqlConnection (conn_string); Try { The test uses the CommandBehavior.CloseConnection method Console.WriteLine ("The test used CommandBehavior. Method of CloseConnection: "); SqlDataReader SDR = Getreader_closeconnection (con); while (SDR. Read ()) {} Sdr. Close (); Console.WriteLine ("Connecti

Spring-data-redis is the Support section for Redis in the Spring-data module, abbreviated as "SDR", which provides a high level of encapsulation based on the Jedis client API and integration with the Spring container. In fact, the Jedis client is simple enough and lightweight, while Spring-data-redis is suspected of "excessive design". A. Jedis client has the following deficiencies in programming implementation: 1 connection management lacks automatio

Label:Data export to XML file #region data is exported to XML file string sql = "Select Id, Callernumber, Telnum, StartDateTime, EndDateTime from Chens. Callrecords "; XDocument XDoc = new XDocument (); Create root directory XElement person = new XElement ("person"); Xdoc.add (person); using (SqlConnection conn = new SqlConnection (SCONSTR)) {using (SqlCommand cmd = new Sqlcomma nd (SQL, conn)) {Conn. Open (); using (SqlDataRead

SqlConnection("server=.;database=dropDownTest;uid=sa;pwd=123456"); con.Open(); return con; } 2. Write operations, including common query methods, conditional query methods, and addition methods (omitted) public static DataTable SelectAll() { SqlConnection con = createConnection(); DataTable dt = new DataTable(); SqlCommand cmd = new SqlCommand("select * from person", con); SqlDataReader sdr = cmd.ExecuteReader(); dt.Load(

();// Open the database connectionCon. Open ();// Create a SqlCommand objectSqlCommand com = new SqlCommand (SQL, con );// Obtain the SqlDataReader object returned by ExecuteReaderSqlDataReader sdr = com. ExecuteReader ();Return sdr;}/// /// Set the display style of the time/// /// /// Public static string strDate (DateTime str){// Set the display style of the timeReturn str. ToLongDateString () + str. Hou

object/// /// /// Public static SqlDataReader getRow (string SQL){// Create a database connectionSqlConnection con = createCon ();// Open the database connectionCon. Open ();// Create a SqlCommand objectSqlCommand com = new SqlCommand (SQL, con );// Obtain the SqlDataReader object returned by ExecuteReaderSqlDataReader sdr = com. ExecuteReader ();Return sdr;}/// /// Set the display style of the time/// ///

Copy codeThe Code is as follows:Note: encapsulate data binding controls (such as System. Web. UI. WebControls. DataGrid, System. Web. UI. WebControls. GridView, System. Web. UI. WebControls. DetailsView)// And System. Web. UI. WebControls. FormView. This class cannot be inherited.DataListPublic DataTable GetDataSet (string SQL){SqlConnection conn = this. getconn ();SqlDataAdapter sdr = new SqlDataAdapter (SQL, conn );DataSet rs = new DataSet ();

./Configure-enable-INTF-open = static Insufficient Permissions Chmod 755 configure authorization ./Configure-enable-INTF-open = static Make Make install [Root @ localhost ipmitool-1.8.10] # ipmitool-I open sensor get "processor 1 Temp"Locating sensor record...Cocould not open device at/dev/ipmi0 or/dev/IPMI/0 or/dev/ipmidev/0: no such file or directoryGet device id command failedUnable to open SDR for readingSensor data record "processor 1 Tem

=== Premise: we already have a datatable data table. All we need now is a row of Data === For example, the following sectionCodeIn a method, a datatable is returned! Sqlcon = New Sqlconnection (strcon );Sqlcom = New Sqlcommand ();Sqlcom. Connection = Sqlcon;Sqlcom. commandtext = " Select_v " ;Sqlcom. commandtype = Commandtype. storedprocedure;Sqlcon. open ();SDR = Sqlcom. executereader ();DT = New Datatable ( ); DT.

The first time I tried indigo, I used the VS 2005 pd6 + indigo SDR (2.0.40903) version. The version of the SDR is quite different from the currently released CTP version. Now I have updated my indigo runtime environment to vs2005 pd7 (8.0.50110.30, that is, the public Feb CTP version) + indigo CTP (2.0.50110.20). These two versions can work very well together. However, note that the current indigo CTP canno

I. Create a database connection in the class It is best to make namespaceUsing system. Data. sqlclient;/// /// Summary description for DB/// ///Namespace vote{Public class DB{Public static sqlconnection createconnection (){Sqlconnection con = new sqlconnection ("Server = gyykf; database = vote; uid = sa; Pwd = sa ;");Return con;}}} Ii. Bind a database First open the database:Sqlconnection con = class1.createconnection ();Con. open ();Then use the command to extract the data:For example:Sqlcomman

distance before and after the title, so that you can set it as needed. \ Setlength \ belowcaptionskip {-1 cm} \ caption {cognitive ring \ label {pic12 }%here is the title of the image, and pic12 is the label of the image, when referencing this image, \ end {Center} \ end {figure} \ vspace {-0.8 cm} % must be used to adjust the interval The following is an example:The source file is as follows: \ Documentclass [a4paper, 12pt] {book} % using the book type (this type is generally used in the midd

patents, with independent intellectual property rights 14: The benefits of a system designed with the concept of SDR for network operation: L devices of various communication systems share hardware platforms, saving data centers and reducing investment L only software upgrade is required during technology evolution, and the construction of new technologies and standard networks is greatly accelerated SDR

Note: 1. Based on linux2.6.32, only for mem (SDR) 2. If you are interested, please refer to: Power Management Solutions apmand acpi .doc. Sleep and wake-up guide for the Linux system. Doc 3. This article first studies the sleep and wakeup of the standard Linux, and Android's additions and modifications to this Part are discussed in another article. 4. We will discuss it based on a previous project. Here we will only discuss commonalities. Although Li

, # soc_csd0_base // 0xa0000000MoV R1, #0x8 // initial Reset// Lpddr delay line is reset.STR R1, [r0, #0x10] // 0xd8001010 enhanced SDRAM control register 0// Hold for more than 200nsLDR R1, = 0x100001:Subs R1, R1, #0x1BNE 1b MoV R1, #0x4STR R1, [r0, #0x10] // 0xd8001010 // Check the chip version to1 or to2LDR R1, soc_si_id_reg_wLDR R1, [R1]ANDS R1, R1, #0xf0000000// Add latency on cas only for to2// To 1.0's id = 0x0 ==>> CAS = 3BNE 2fLDR R1, sdram_0x00795729B 3f// Now handles to 2.x2:ANDS R1,