New PDF release: Beginning ASP.NET 2.0 and Databases

By John Kauffman, Bradley Millington

Taking you past the fundamentals to debate the diversifications, pitfalls, and top practices that ensue in genuine enterprise eventualities, this basic booklet courses you thru an important makes use of of ASP.NET-working with databases on your ASP.NET sites.

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Note that at the bottom of the panel you have tabs to switch between a view of the Web files (Solution Explorer), a view of the sources of data (Database Explorer), and the Toolbox, as shown in Figure 2-1. Also note that you cannot expand and look into an MDB from the Solution Explorer window (although you can see that the file exists in the App_Data folder, and can dou-ble-click an MDB file to open it in Access). You must switch to Database Explorer view to delve into the MDB’s schema. Figure 2-1 6.

To set permissions manually, follow these steps: 1. Navigate to the folder where the MDB file is located using Windows Explorer. 2. Right-click this directory and choose Properties. 3. Select the Security tab and click the Add button. 4. 1) or IIS_WPG group (IIS 6). 5. Click OK; then apply the appropriate permissions to this directory. aspx. Handling Access Connection Failures Gracefully Errors and failures inevitably happen from time to time in an application. What happens when someone “improves” your server’s file system by adding a new level of folders above your MDB?

Again, note the terminology. It would be clearer if there were an “AccessException” type, but there isn’t. You use the more generic object OleDbException and finish the script with a command that the exception was handled. 0 failure page. Because the GridView did not get any data, it displays an alternate table: one with a single cell that shows the message in the EmptyDataText property. 50 Chapter 2: Connecting to an Access Database Chapter 2: Connecting to an Access Database 51 Don’t despair if you have difficulty following these steps; the next exercise will demonstrate.

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