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Editorial Team
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Asked: 2026-05-22T18:39:52+00:00

I’m creating a SQL CE database file programmatically and want to make sure I’m

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I’m creating a SQL CE database file programmatically and want to make sure I’m creating a fresh new one each time so I added the delete method. Since each database file is created in DataDirectory, I would want to delete the file in DataDirectory as well, but it’s giving me

“illegal characters in path” error

following is my code:

/* illegal characters in path */
File.Delete("|DataDirectory|\\Foo2Database.sdf");

string connString = @"Data Source=|DataDirectory|\Foo2Database.sdf";
SqlCeEngine engine = new SqlCeEngine(connString);
engine.CreateDatabase();
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1 Answer

  1. Editorial Team

    |DataDirectory| is connection string notation and is not related to file system pathes.

    You can delete the file using the code like this:

     var directoryName = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
 var fileName = Path.Combine(directoryName, "Foo2Database.sdf");
 File.Delete(fileName);

    You can get current DataDirectory via AppDomain.CurrentDomain.GetData("DataDirectory"); if you set it.

    If you have asp.net DataDirectory will be Server.MapPath("~/App_Data"); by default.

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