This article describes in detail the whole process of code implementation for mobile phone number attribution query in asp.net and the methods described later. If you need it, you can refer to it.
Step 1: Add a reference in "Reference": System. configuration.
Step 2: Right-click the project and choose "add"> "new item"> add an "Application configuration file", that is, the App. config file.
The code for this file is as follows:
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<? Xml version = "1.0" encoding = "UTF-8"?>
<Configuration>
<ConnectionStrings>
<Add name = "ConnStr" connectionString = "Data Source =. SQLEXPRESS; AttachDBFilename = | DataDirectory | Phone. mdf;
Integrated Security = True; User Instance = True "/>
</ConnectionStrings>
</Configuration> |
Step 3: Add the following code to connect to ADO. Net in the Main () method on the Program. cs page to create a database:
Function: This code is used to read the database created in AD. Net. If this code is not added, the database in Debug under the root directory is read.
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String dataDir = AppDomain. CurrentDomain. BaseDirectory;
If (dataDir. EndsWith (@ "binDebug ")
| DataDir. EndsWith (@ "binRelease "))
{
DataDir = System. IO. Directory. GetParent (dataDir). Parent. Parent. FullName;
AppDomain. CurrentDomain. SetData ("DataDirectory", dataDir );
} |
Step 4: Right-click the project and choose add> new item> Add a "service-based database" (the database name is Phone. mdb); the database has seven fields: Id (identifier), StartNo (start number), EndNo (end number), Sheng (number of the province, autonomous region, or municipality ), shi, TMobile, and CardType ).
Finally, add two using commands: using System. IO; and using System. Data. SqlClient on the Form1.cs page. Then, drag a button on the form to import Data when you click.
The complete code for this page is as follows:
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Using System;
Using System. Collections. Generic;
Using System. ComponentModel;
Using System. Data;
Using System. Drawing;
Using System. Linq;
Using System. Text;
Using System. Windows. Forms;
Using System. IO;
Using System. Data. SqlClient;
Namespace mobile phone number
{
Public partial class Form1: Form
{
Public Form1 ()
{
InitializeComponent ();
}
Private void btnImport_Click (object sender, EventArgs e)
{
If (ofdImport. ShowDialog ()! = DialogResult. OK)
{
Return;
}
// Open an existing file for reading
// Using (FileStream fileStream = new FileStream (ofdImport. FileName, FileMode. Open,
// FileAccess. Read, FileShare. None ))
Using (FileStream fileStream = File. OpenRead (ofdImport. FileName ))
{
Using (StreamReader streamReader = new StreamReader (fileStream ))
{
Using (SqlConnection conn = new SqlConnection (@ "Data Source =. SQLEXPRESS; AttachDBFilename =" +
AppDomain. CurrentDomain. BaseDirectory + "Phone. mdf; Integrated Security = True; Connect Timeout = 30; User Instance = True "))
{
// It takes a long time to create a connection. Therefore, do not create a connection for each operation.
Conn. Open ();
Using (SqlCommand cmd = conn. CreateCommand ())
{
Cmd. commandText = "Insert into T_PhoneNum (StartNo, EndNo, Sheng, Shi, TMobile, CardType) values (@ StartNo, @ EndNo, @ Sheng, @ Shi, @ TMobile, @ CardType) ";
String line = null;
While (line = streamReader. ReadLine ())! = Null) // assign a value to line in () before comparison
{
String [] strs = line. Split ('-');
String startNo = strs [0];
String endNo = strs [1];
String sheng = strs [2];
String shi = strs [3];
String merchant = strs [4];
String type = strs [5];
// Parameters cannot be added repeatedly. The same SqlCommand object is always used in while.
Cmd. Parameters. Clear (); // The Parameters previously executed are cleared before each parameter is added.
Cmd. Parameters. Add (new SqlParameter ("StartNo", startNo ));
Cmd. Parameters. Add (new SqlParameter ("EndNo", endNo ));
Cmd. Parameters. Add (new SqlParameter ("Sheng", sheng ));
Cmd. Parameters. Add (new SqlParameter ("Shi", shi ));
Cmd. Parameters. Add (new SqlParameter ("TMobile", merchant ));
Cmd. Parameters. Add (new SqlParameter ("CardType", type ));
Cmd. ExecuteNonQuery (); // if the original data is not cleared, an SqlException exception occurs here (variable Name '@ name' has been declared)
}
}
}
}
}
MessageBox. Show ("data import successful! ");
}
}
} |
