C # Configuration issues and simple prevention of SQL injection, connection pooling issues, SqlDataReader object release for connection objects

Source: Internet
Author: User
Tags connection pooling connectionstrings

  • Add a reference. System Configuration

  • Configurationmanager.appsettings[""]

  • <appSetings>

  • <add key= "" Value= "" >

  • </appSetings>

  • <connectionStrings>

  • <add key= "" connectionstring= "" >

  • </connectionString>

  • Configurationmanager.connecsring[""]. ConnectionString

  • Excutescalar ();

  • SqlDataReader Reader=excutereader (); Reader pointer, pointing to table header

  • Reader. Read ();

  • producer Consumer problems --The connection pool of SQL connection

  • Httoapplication —————— Object Pooling Technology

  • add config file inside app.

  • while (reader. Read ())

  • {


  • }

  • String constr=configurationmanage.connectionstrings[].connectionstring;


  • String Filename=string.empty;

  • using (SaveFileDialog std=new SaveFileDialog ())

  • {


  • Filename=std. Filename;


  • }

  • StreamWriter writer=new StreamWriter (filename)

  • Writer. WriteLine ("")

  • Reader. HasRows//reader a property: Determine if data is included, return bool type

  • Reader always occupies the Sqlconnectiion object,

  • If you re-execute cmd.commandtext you have to wait until reader releases just connection object

  • DateTime.now.substract ()

  • SQL Prevention Injection:

Cmd. Parameters.Add ("@username", txtUsername.Text)


C # Configuration issues and simple prevention of SQL injection, connection pooling issues, SqlDataReader object release for connection objects

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