How Can I Dynamically Retrieve Data from Stored Procedures Using Entity Framework?

Using Entity Framework to Retrieve Data from Stored Procedures Dynamically

In Entity Framework 6.1.1, accessing data from a dynamically constructed stored procedure presents challenges. The following steps address this issue:

1. Import Stored Procedure as Function: Right-click the Entity model workspace and select "Add -> Function Import."
2. Configure Function Import: Specify a convenient name (e.g., Search_Products), choose the target procedure, and set the return value to "Entities" (mapping to the Product entity).
3. Invoke Function in Code: In your C# code, replace the original method call with:

var result = db.Search_Products(TEST_SEARCH_TERM);

This will execute the stored procedure and populate the result variable with an IEnumerable DataSet containing the desired objects.

Technical Explanation:

Entity Framework initially returns -1 when attempting to retrieve data from stored procedures because it lacks native support for return values outside the box. Importing the stored procedure as a function allows Entity Framework to handle the procedure as an extension method, thereby resolving the issue.

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