firebird ado net data provider example

Although many of my friends are using. Net for data access, there should be few DB2 users. Occasionally, ODBC or ole db is used. DB2 9.0 + provides ADO. net provider that supports. NET 2.0. Especially for friends who use purexml

However, the user code does not process the ADO. NET provider with a fixed name "Oracle. ManagedDataAccess. Client". It is not registered in the computer or application configuration file or cannot be loaded ., This is a common error in connecting to the Orcl database using ODP. NET. You need to configure system enviro

Tags: style blog http color os file data ioRecently trying to learn ASP. NET MVC, when you click Add-New Item--visual in the data under C # to the ADO Entity Data Model, and the "Select Your data connection" error occurs, the " An

purchase. A cursor is a database element that controls the visibility of record navigation, the ability to update data, and other users ' changes to the database. Ado.net does not have intrinsic cursor objects, but rather contains data classes that provide traditional cursor functionality. For example, the ability to provide a forward-only, read-only cursor in t

ADO. NET data operations, ADO. NET data operations Public static class SQLHelper {static string connString = ConfigurationManager. connectionStrings ["connString"]. toString (); /// Common Methods for database operations

allows you to access the MySQL database throughThe native protocol, without going through ole db or ODBC.Using C # using EID.MySqlClient;...MySqlConnection oMySqlConn = new MySqlConnection();oMySqlConn.ConnectionString = "Data Source=(local);" + "Database=myDatabaseName;" + "User ID=myUsername;" + "Password=myPassword;" + "Command Loggi

the efficiency of using dataview if there are tens of thousands of records in a dataset ?? [A] if the data volume is large, for example, tens of thousands, we recommend that you use datareader instead of dataset. Otherwise, the offline data volume is too large, which consumes a lot of memory. [Q] Gentleman: How can I improve the efficiency in dataset when the re

we know that the most direct and powerful way to operate Excel is to reference the Excel DLL and use the packaged EXCEL object system to search for and update Excel Data, or some other actions. However, if you simply process some set data, there is a way to avoid complicated Excel objects, various strange variables and function parameters, that is, ADO.

Ado. Net Object Model The ADO. Net object model has five main components: connection object, command object, datareader object, dataadapter object, and DataSet object. The components that are responsible for establishing online and data operations are called the

In the previous article, we mainly analyzed the overall design of blogengine. net. In the second part, we also made some in-depth discussions on the State maintenance of business objects in business. In this article, I will guide you through {Tagshow (Event)} "> Storage design ideas and implementation details analysis. The data storage in blogengine. NET is mainl

static readonly string ConnectionString = ConfigurationManager.ConnectionStrings["Default"].ConnectionString; public static DataSet GetDataSet(string sql) { using (SqlConnection conn =new SqlConnection(ConnectionString)) { SqlCommand cmd = new SqlCommand(sql, conn); SqlDataAdapter adapter = new SqlDataAdapter(cmd); adapter.MissingSchemaAction = MissingSchemaAction.AddWithKey; DataSet ds = new DataSet(); conn.Open(); adapter.Fill(ds); return ds; } }} The above architecture

To give full play to the advantages of ADO, not only need a comprehensive, in-depth understanding of the ADO programming model, timely experience, skills are also very important. ADO has many years of practical experience with ADO. NET provides a richer, more powerful tool b