private static string connstring=configurationmanager.connstrings["ConnString"]. ToString (); Add the appropriate database connection profile to the configuration in app. Config1. Formatting SQL statementsPerform additions and deletions and change
TCP Connection
The foundation of TCP is Socket. In the TCP connection, we will use ServerSocket and Socket. After the client and server establish a connection, the rest is basically the control of I/O.
Let's first look at a simple TCP communication,
Compilation of SQL parameter encapsulation class for database
Copy Code code as follows:
Using System;
Using System.Data;
Using System.Configuration;
Using System.Web;
Using System.Web.Security;
Using System.Web.UI;
Using System.Web.
Copy Code code as follows:
Using System;
Using System.Data;
Using System.Configuration;
Using System.Data.OracleClient;
Using System.Text;
Using System.Windows.Forms;
Using System.Xml;
Using Transactions;
DB Summary description
Copy codeThe Code is as follows: using System;
Using System. Data;
Using System. Configuration;
Using System. Data. OracleClient;
Using System. Text;
Using System. Windows. Forms;
Using System. Xml;
Using Transactions;
///
/// DB summary
MongoDB uses Flexgrid's simple data to present this example. This example uses the commonly used: User, post, comment as the basic model to implement a simple Demo of MongoDB's combination of Flexgrid data presentation. Due to time limitations, the
Action class
Using System;Using System.Data;Using System.Configuration;Using System.Data.OracleClient;Using System.Text;Using System.Windows.Forms;Using System.Xml;Using Transactions;DB Summary description written by Luos.luo, the creator of
Demonstration classes that demonstrate situations in which JDBC accesses Oracle large data objects lob
Import java. Io .*;Import java. util .*;Import java. SQL .*;
Public class lobpros{
/*** Oracle driver*/Private Static final string driver =
Exception trapping in C # I believe everyone is familiar with the common use of exception captures are: 1. try{...} catch (Exception ex) {throw ex;} 2. try{...} catch (Exception) {throw;} 3. try{...} catch (Exception ex) {throw new Exception
Only to achieve the basic upload, download, determine whether the file exists and my practical application of the most important based on the selected remote file address automatically create related directory features
Specific code Download:
Walkthrough: saving data in transactions
This walkthrough demonstrates how to use the system. Transactions namespace to save data in a transaction. This example usesMERsAndOrdersTable. Prerequisites
This drill requires access to the
According to your own learning of the dsoframer control, to simply package the dsoframer control as the usercontrol of C #, you need to do the following: (the process of creating a windows usercontrol will not be repeated ...)We have not made much
Document directory
The try-finally syntax in the seh exception model is referenced and introduced.
All exceptions must be inherited from throwable.
Stricter and more rigorous exception handling management!
Pay special attention to
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