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Asked: 2026-06-10T04:42:33+00:00

I’m creating a very basic CRUD desktop winforms application in C#/.NET 4.0. Letting Visual

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I’m creating a very basic CRUD desktop winforms application in C#/.NET 4.0.

Letting Visual Studio auto-generate the fields for the table I’d like to perform my CRUD operations on works just fine, but I’m running into problems when I try and interact with it manually with my own SQL queries.

The auto-generated fields are using the connection string:

Data Source=|DataDirectory|\Data Analysis.sdf

If I try and do:

SqlConnection conn = new SqlConnection(@"Data Source=|DataDirectory|\Data Analysis.sdf");
conn.Open();

It just hangs. What am I missing?

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1 Answer

  1. Editorial Team

    That’s a connection string for a SQL Server Compact Edition (CE) database (everything stored inside a single .sdf file) – is that what you’re using?

    If so : in that case, you’d have to use SqlCeConnection (not a SqlConnection – that’s for “grown-up” SQL Server version – not CE)

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