Visual Basic Q&A

Symptoms
If more than one connection exists in Microsoft Visual Studio .NET Server Explorer, and if you cannot see Server Explorer in Visual Studio .NET, you may receive the following error message when you click Fill Dataset to preview the data in the Data Adapter Preview window:

SqlDataAdapterName. The data adapter could not return the data from the data source.
The connection string is invalid.Alternatively, when you right-click DataAdapter and then click Generate Dataset, you may receive the following error message:

Retrieving the schema for SqlDataAdapter1 failed.
The connection string is invalid.
Resolution
Connection Manager manages the Microsoft SQL Server connections in Visual Studio .NET. When you click Fill Dataset or Generate Dataset, a Connection object is built and then added to the Connection Manager list of Connection objects. Connection Manager finds the Connection in its list and then prepares to return the Connection with the display name of the Connection. To return the display name, Connection Manager incorrectly opens Server Explorer and then looks for a connection in Server Explorer. Connection Manager generates an error because the connection does not exist in Server Explorer.

Symptoms
If the configuration of the monitors changes when the ApplicationPerformance Explorer (APE) runs on a computer with a multiple displayconfiguration, Application Performance Explorer no longer appears when yourun it.
Resolution
The Application Performance Explorer does not support multiple displays.While it can be used in this configuration, the Application PerformanceExplorer does not detect the reconfiguration of the monitor setup and itstarts up in its original location on the desktop, which is no longervisible in the new configuration.