1. Introduction
With the birth of Microsoft.NET network-oriented new generation development platform, it provides a brand-new development environment for programmers. The author of my own in the use of Ado.net database programming problems encountered, and we discuss the data operation of the key technologies, procedures and common errors. There may be some reference value for. NET database programmers to avoid similar errors.
The author discusses t
Restrictions on ADO. NET Excel operations
Restrictions on ADO. NET Excel operations:
1. The cell format cannot be set. inserting a new row will automatically inherit the format of the previous row.
? 2. You cannot use ADO. NET to
Data access is the basis of any application. In this article, I will explain how to use C # and ADO. NET to access SQL Server-based data and how to display data in a data-bound grid control. I use a simple C # application as an example.
ADO. NETStructure
You do not need to maintain a connection when using ADO.
about ADO. net there are many articles online, here I am only interested in what I have come into contact with today ADO. net connected and disconnected . If I understand something wrong, I hope you can correct it.
ForAdo. netOfConnectedAndDisconnectedPreliminary understanding
Connected ( Connection
How to connect to the SQL Azure database using ADO. Net
In the. Net environment, the most common method to connect to a database is to use ADO. Net. In the SQL Azure environment, ADO. Net
ArticleDirectory
Command object: Execute Command
Datareader object: Read data
Dataadapter object: use the data source to fill the dataset and fix the update.
DataSet object: representation of data residing in memory
Ado. Net is a group of. NET FrameworkProgramClass that exposes data access services.In the system. Data. dll assembly
I have been writing something for a long time, and I will write another article before I start school. Recently, I have been playing a database, and I have nothing to do for a winter vacation. I wrote a commemorative day reminder and a personal income and expenditure management.Program.New Access to C # ADO. Net has encountered many difficulties. I hope to help you.The first is the database link. I use acce
Use C # to perform simple operations on the ADO. NET database
Database access is the most common part of applications. With the introduction of C # and ADO. net, this operation becomes easier. This article will demonstrate four basic database operations.● Read data. Data types include integer, string, and date
Codesmith creates an ADO. Net custom template (2)
Article 1: codesmith creates an ADO. Net custom template (1)
Create the second C # template: step2_model.cst (entity class template)
Code:
// --------------------- The above will not be explained. For details, see codesmith create a custom
This article is
ADO. NET Entity Framework
Series of articlesArticle 3: continue to demonstrate how to use the entity of ADO. NET Entity Framework as the data source of the data control to easily display data records in the Data Control. ADO. the first two articles of
In terms of concept, ADO. Net defines an object-oriented class library that interacts with data sources. A class library is a collection of classes. That is to say, ADO. Net mainly provides some classes and interfaces for interaction with data sources.
In my opinion, ADO.
Ado. NET is based on Netframwork some core classes, you can divide these classes into two groups: the container classes that are used to manage data and the control classes that are used to connect to a particular data source.Container classes are generic and can use the same data container for data storage, regardless of the data source used.The class used to connect to a particular data source becomes an
ArticleDirectory
Summary
Directory
Digress
Through the previous chapters, I do not know if you have some knowledge of ADO. net. Regardless of the quality of the article, it must be affirmed that I write every article with my heart. I have spent a lot of time on both typographical and content selection. I hope that through this series of articles, both novice and veteran will be able to gain
ADO. Net,
ADO. NET is a database access architecture in the. NET Framework. ADO is short for ActiveX Data Objects. It is used to access the database by. NET applications.
The six object
In order to give full play to the advantages of ado.net, we need not only a comprehensive and in-depth understanding of ado.net programming model, but also experience and skills in time. ADO has many years of practical experience, ADO. NET on this basis, provides a richer and more powerful tools; however, ADO.
All the content of this article is collected from the blog of the predecessor, it is only available for quick access when learning reference. Ado. NET Getting Started tutorial (i) Getting Started with ADO.NETADO.NET (ii) Learn about the. NET data provider getting started with ADO (c) connection string, are you underest
"1" ADO. The difference between net and ADO:ADO is stored in a recordset, while ADO is represented by a dataset. The recordset looks more like a single table, and if the recordset is represented in multiple tables, it has to make multiple table connections in SQL. Conversely, a dataset can be a collection of multiple tables. The operation of
Display ADO. NET paging Filling Technology
If the data does not change frequently, You can locally maintain a record cache in DataSet to improve performance. For example, you can store 10 pages of useful data in the local DataSet, and query new data from the data source only when the user browses the first and last pages beyond the cache.
1) do not use DataAdapter. Fill with startRecord and maxRecords value
In some small programs written in my spare time recently, there are many accesses to the database. The following describes ADO. NET knowledge, there are deficiencies, hope you don't hesitate to enlighten me: mention ADO. NET, often with ASP. NET obfuscation, the two are very
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.