How to automate setting ConcurrencyMode=Fixed on all RowVersion columns?

Question

EF defaults to no concurrency control (last write wins) which allows lost updates. Enforcing optimistic concurrency checks can explicitly be configured by setting Concurrenc

Answer 1

Seems like this Feature is not going to be around for EF 5 or EF 6.

I whipped up a quick console app to update the edmx after generating DB First.

Just drop the file in the same directory of your edmx file and run after every regeneration.

Will work for any of the following columns:

RowVersion    timestamp    NOT NULL
rowversion    timestamp    NOT NULL
RowVer        timestamp    NOT NULL
rowver        timestamp    NOT NULL

You can get the console app here https://dl.dropbox.com/u/3576345/EFConcurrencyFixed.exe

or use this piece of code in your own console app.

class Program
{
    static Dictionary replacements = new Dictionary()
    {
        { "",
          ""},

        { "",
          ""},

        { "",
          ""},

        { "",
          ""},
    };

    static void Main(string[] args)
    {
        // find all .edmx
        string directoryPath = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
        foreach (var file in Directory.GetFiles(directoryPath))
        {
            // only edmx
            if (!file.EndsWith(".edmx"))
                continue;

            // read file
            var fileContents = System.IO.File.ReadAllText(file);

            // replace lines
            foreach (var item in replacements)
                fileContents = fileContents.Replace(item.Key, item.Value);

            // overwite file
            System.IO.File.WriteAllText(file, fileContents);
        }
    }
}