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.Net Database Articles


61: Database access type field garbled Clob
DataReader is the default behavior can be used in the data line to line as soon as the form is loaded into the data. However, for binary large object (BLOB) is the need for different treatment, because they may contain billions of bytes of data, and...

62: How to obtain the language of the type of operating system
Today, friends asked the question: "For example: I am running win2000 on the Chinese version of the operating system can access the Chinese language version, in the run-time on win2000 in English, know English," Here, I wrote a function,...

63: Ie in the elimination of images in the cache and the problem can not be updated
Process is a dynamic display picture The intention of the original image stored in the server-side and then show However, the cache problems ie picture can not show real-time updates Therefore, the picture changed in the session there and then sh...

64: The bottom of a data type operation
I am not very satisfied with this class, if you have improvements please contact me, greatly appreciated. The main database will be easy to package a bit using System; using System.Collections; using System.ComponentModel; using System.Data; u...

65: A generic category Confirmation Page
Confirmation Page 1. Introduction In New or Edit page, users might press the Close button by mistake and lost the content that they have input. To avoid this mistaken action, application should prompt users before the page is closed. This page wil...

66: Operation must use an updateable query
Error "Operation must use an updateable query" causes and solutions Comparison of translation rush, huh, huh. Error message: Microsoft OLE DB Provider for ODBC Drivers error'80004005 ' [Microsoft] [ODBC Microsoft Access 97 Driv...

67: Upload file to Oracle database
HR in the database under the program known as the establishment of a TESTFILEUPLOAD table that contains three: primary key PKID, the file name FILENAME, file FILE (BLOB type). void uploadFile () ( FileStream objFs = new FileStream (File1.Value, F...

68: Download Oracle Database Blob binary file, an example!
HR to Oracle database tables TESTFILEUPLOAD under the program to download the file to the system temporary directory. void downloadFile () ?? ( ??? OracleConnection objOcon = new OracleConnection ( "user id = system; Data Source = tsems; pas...

69: Connect with Corba and dotNet
Corba, the common object request broker architecture (Common Object Request Broker Architecture) acronym, in the cross-platform and cross-language (such as J2EE) distributed (multi-layer) system with a wide range of communications applications, the ...

70: ADO.NET series of quiz 2 on the Distributed Transaction
Question: On the Distributed Transaction examples: Database A and database B have a bank on the table (the actual case of A and B, respectively, on different machines, different types of database (in support of dtc)) Table is structured as follow...

71: To add a DataGrid's own home page, last page and the state function
DataGrid paging functionality provided, but seems limited, but we can attribute some of DataGrid to obtain state and to increase the Home, End Function button. There is no use custom DataGrid paging function, if the efficiency in terms of speed is n...

72: Find the page datagrid function
Learn in their own development process, writing a number of reusable code, and would like to share with you. Because there is no datagrid in delphi as grid data grid of the search function, so writing a do-it-yourself: ----------------------------...

73: SQL to Excel in three ways
Method 1. Use CopyFromRecordset (for Access, SQL) The first time: 49 Second: 45 Third: 43 Fourth: 43 Fifth: 42 Method 2: Use QueryTable (for Access, SQL) The first time: 10 The second time: 6 Third: 3 Fourth: 4 Fifth: 4 Method 3: Use the...

74: Use to automatically install MSDE
First, the production of auto-install the SQL Has been produced, the program on: \ \ Projects \ install disc production \ MSDE Description: The purpose is to automatically install MSDE installation procedure when there is no screen, and automatic...

75: Let DataGrid has a click event and return back to the value of the specified fields
Let DataGrid has a click event and return back to the value of the specified fields In the face of the main structure from the table, we often have this kind of demand That is a DataGrid to the information listed in the main table, and then select...

76: Database Connection Class
using System; using System.Data; using System.Data.SqlClient; using System.Data.SqlTypes; using System.Windows.Forms; using System.Collections; namespace Database ( / / / <summary> / / / Database summary. / / / </ Summary> pub...

77: How data will be everywhere in the datagrid in execl
1 the introduction of Microsoft Excel 10.0 Object Library (Project -> Add Reference -> Com) 2 Dim excelapp As New excel.Application Dim excelbook As excel.Workbook Dim excelsheet As excel.Worksheet 3 Set excelbook = excelapp.Workbooks.Ope...

78: VB.NET or ASP.NET to automatically back up the development of database applications
'Backup database 'BackupDataName database storing the absolute path Function BackUpData (ByVal BackupDataName As String) As String Dim Conn As New SqlClient.SqlConnection (ModConn.GetConn) Dim mySelectQuery As String = "Backup datab...

79: Object-oriented database applications in the application (dotNet)
Object-oriented database applications in the application (dotNet) Now a significant portion of applications are database-related procedures, and to write to the database program will involve a lot of data tables, data access and manipulate database...

80: Database connection string (Chinese)
All in the database application development, database connectivity database is the first step in application development, but also the most important step. Different databases for their connectivity patterns are different, corresponding to a differe...


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