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Database dataset from updating

database dataset from updating-80

While that will let you check the results of any test run in Server Explorer, you still won't be able to have one test run build on the changes made by a previous test run.

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Example 8-2 shows an example of allowing an Sql Data Adapter object to infer the SQL ' Open a database connection. If any of these properties had been set on the Sql Data Adapter object, those values would have been used instead. And sure enough, when you go to Server Explorer and browse to the rows that should have been changed in the first run you can see that the data is unchanged.That's because, when you press F5, Visual Studio quietly copies your database from your project's root folder to the bin/Debug folder, and that's the version of the database that your code updates.The default setting for the property is "Copy Always." The setting you probably want is "Copy If Newer".This will copy the database from the project root only if you make some change to the database and build your project.To check the results of your test runs, you'll need to add a connection in Server Explorer to the version of the database in your bin/Debug folder.

Just turn on Show All Files at the top of Solution Explorer, drill down through the bin and Debug folders, and double-click on the database file to add it to Server Explorer.

Dim autogen As New Sql Command Builder(da) ' Load a data set. Fill(ds, "Categories") ' Get a reference to the "Categories" Data Table. This property contains an Sql Parameter Collection object that in turn contains one Sql Parameter object for each formal parameter.

The Sql Parameter object's Parameter Name property matches the name of the formal parameter (including the ""), the Source Column property contains the name of the column from which the value is to come, and the Source Version property specifies the version of the value that is to be used. Add( _ New Sql Parameter("@Description", Sql Db Type.

Dim str Connection As String = _ "Data Source=localhost; Initial Catalog=Northwind;" _ & "Integrated Security=True" Dim cn As Sql Connection = New Sql Connection(str Connection) cn. The Sql Command Build Object can be examined to see what commands were created.

Open( ) ' Create a data adapter object and set its SELECT command. To see the commands that are generated in Example 8-2, add the following lines anywhere after the declaration and assignment of the autogen variable: , etc.) in each of these statements.

Here's what happens: You add a database to some non-ASP. You run some code that makes some updates and everything seems to work with all of your updates accepted.