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Lesson 2-3: Modify the Flat File connection manager

  • Artikkeli

Applies to: SQL Server SSIS Integration Runtime in Azure Data Factory

In this task, you modify the Flat File connection manager from Lesson 1. That Flat File connection manager is configured to statically load a single file. To enable the Flat File connection manager to iteratively load files, you change the ConnectionString property of the connection manager to use the user-defined variable User::varFileName, which contains the path of the file to be loaded at run time.

By modifying the connection manager to use the value of the user-defined variable to change the ConnectionString property, the connection manager connects to different flat files. At run time, each iteration of the Foreach Loop container updates the User::varFileName variable. Updating the variable, in turn, causes the connection manager to connect to a different flat file, and the data flow task to process a different set of data.

Configure the Flat File connection manager to use a variable

  1. In the Connection Managers pane, right-click Sample Flat File Source Data, and select Properties.

  2. In the Properties window make sure the PackagePath starts with \Package.Connections. If not, in the Connection Managers pane, right-click Sample Flat File Source Data, and select Convert to Package Connection

  3. In the Properties window, for Expressions, select the empty cell, and then select the ellipsis button (...).

  4. In the Property Expressions Editor dialog, in the Property column, select ConnectionString.

  5. In the Expression column, select the ellipsis button (...) to open the Expression Builder dialog box.

  6. In the Expression Builder dialog, expand the Variables node.

  7. Drag the variable User::varFileName into the Expression box.

  8. Select OK to close the Expression Builder dialog.

  9. Select OK again to close the Property Expressions Editor dialog.

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Step 4: Test the Lesson 2 tutorial package