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Download ADO.NET Cookbook by Bill Hamilton PDF

By Bill Hamilton

Deals 153 suggestions, entire with code and reasons, to difficulties normally encountered whilst utilizing ADO.NET to aid facts entry in loosely coupled n-tier software architectures. The ideas show the best way to connect with info resources from ADO.NET, retrieve information utilizing SQL statements, look for files in perspectives and tables, replica facts among ADO.NET periods, bind information to varieties, and increase program functionality. The code examples are written in C#.

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Example text

To extract data from Microsoft Outlook or Microsoft Solution Use the OLE DB Jet provider to access Exchange and Outlook data. Load Displays a form that allows the user to specify the mailbox name and mail profile to connect to. NET data provider. A DataAdapter is used to fill a table with the Subject and Content of each message in the Inbox. The default view of the table is bound to a data grid on the form. The C"docLink" HREF="#adonetckbk-CHP-1-EX-8">Example 1-8. Example 1-8. OleDb; // . . EventArgs e) { String sqlText = "SELECT Subject, Contents FROM Inbox"; // Build the connection string.

15 Taking Advantage of Connection Pooling Problem You need to understand connecting pooling and make sure that your applications use it. NET data providers, and how to ensure that connection pooling is used by an application. 47 48 Discussion Connection pooling allows an application to reuse connections from a pool instead of repeatedly creating and destroying new connections. Connection pooling can significantly improve the performance and scalability of applications by allowing a smaller number of connections to service the connection requirements of an application and because the overhead of establishing a new connection is eliminated.

43 44 Custom file A custom file is any file that is used to for proprietary storage of application settings that are typically used at runtime. There is generally no particular advantage to using a custom file to store connection information so the technique is not recommended. The approach requires extra coding and forces concurrency and other issues to be explicitly addressed. NET IDE. Solution Use COM interop with the OLE DB Service Component to display the Data Link Properties dialog box. NET's Add Reference Dialog.

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