Vb net updating dataset from datagridview Video chat fri rulotte

Posted by / 29-Mar-2015 12:39

In the example of the Ole Db Execution object in Listing 5-59, the Error collection of the exception is looped through after the exception is thrown, and both the error messages and the error codes are placed in a string to be printed out in a Message Box control. Utilizing the Ole Db Error Collection Listing 5-60 used the Sql Server Exception class. The Sql Error is a bit more extensive in that it can tell you more an error than the Ole Db Error. Sql Error Properties Info Message Event Handler: Listening to Warnings Information or warning message is sometimes produced after a query is executed on a database. NET project: The message Box in this code shows the first information message passed in form the Info Message Event argument.

The Sql data provider provides some additional methods for dealing with transactions involving save points.

Save points allow you to rollback to a "bookmarked" point in the transaction. As you can see from Listing 5-58, first you establish a connection with the Northwind database and open the connection.

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After that, by calling Begin Transaction on the connection.

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You can return a Sql Transaction object, which you can use together with your Command object.

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  2. ANSWER: If you allow and both to specify types in the same namespace, it's hard to implement a processor for this validation language. NET Schema validator, I can find no way to specify a generalized collection of Schemas to be used to validate a document.