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This project demonstrates how to add unique constraint in Entity Framework 4.3. Many customers need a Unique Attribute in EntityFramework4.3, but until now, there is no any published DLL or tool in Code-First of Entity Framework to serve this purposeThis sample demonstrates how to build a sub-report which get data from SQL Server based on a primary key passed from the main-report, then use the ReportViewer control to show that Main/Sub report in the web page.
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