Read e-book online ADO.NET in a Nutshell PDF

By Matthew MacDonald, Bill Hamilton

ISBN-10: 0596003617

ISBN-13: 9780596003616

Written by means of specialists at the MicrosoftÂR .NET programming platform, ADO.NET in a Nutshell provides every thing .NET programmers might want to get a jump-start on ADO.NET know-how or to sharpen their talents even additional. within the culture of O'Reilly's In a Nutshell sequence, ADO.NET in a Nutshell is the main entire and concise resource of ADO.NET details to be had. ADO.NET is the suite of knowledge entry applied sciences within the .NET Framework that builders use to construct functions prone getting access to relational info and XML. Connecting to databases is a primary a part of so much purposes, whether or not they are internet, WindowsÂR, disbursed, client/server, XML internet prone, or anything solely varied. yet ADO.NET is considerably varied from Microsoft's earlier info entry applied sciences - together with the former model of ADO - so even skilled builders have to comprehend the fundamentals of the hot disconnected version sooner than they begin programming with it. present with the .NET Framework 1.1, ADO.NET in a Nutshell bargains one position to seem if you need assistance with whatever concerning this crucial know-how, together with a connection with the ADO.NET namespaces and item version. as well as being a necessary reference, this e-book offers a concise origin for programming with ADO.NET and covers various matters that programmers face while constructing net functions or internet companies that depend upon database entry. utilizing C#, this e-book offers genuine international, sensible examples to help you placed ADO.NET to paintings instantly.

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SqlConnection con = new SqlConnection(connectionString); SqlCommand cmd = new SqlCommand(procedure, con); // Configure the command. StoredProcedure; SqlParameter param; // Add the parameter representing the return value. ReturnValue; // Add the input parameters. NET Tutorial // Execute the command. 4 Deriving Parameters So far, the stored procedure examples suffer in one respect: they import numerous database-specific details into your code. Not only do you need to hardcode exact parameter names, but you need to know the correct SQL Server data type, and the field length for any text data.

NET provider. As with all forms of connection pooling, every pool is divided into multiple transaction-specific pools (and one pool for connections that aren't currently enlisted in a transaction). Fortunately, this process is managed transparently, and threads associated with a particular transaction context automatically receive a connection from the appropriate pool. However, it does mean that using client-initiated transactions can reduce the efficacy of connection pooling. 2 OLE DB and ODBC Connection Pooling OLE DB connection pooling doesn't need to be explicitly enabled because it uses the built-in OLE DB session pooling features.

Specifies how this command updates a data source when it is used with a DataSet and IDbDataAdapter. We'll return to this topic in the next chapter. CommandText CommandTimeout CommandType Connection Parameters Transaction UpdatedRowSource Table 4-2. NET Tutorial ) Tries to stop a running command. In order to invoke this method, you must start the command on a separate thread, because all commands execute synchronously. Otherwise, your code will be stalled and won't have a chance to call the Cancel( ) method.

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ADO.NET in a Nutshell by Matthew MacDonald, Bill Hamilton

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