How do I load a saved dictionary from a file?

Question

I have saved a dictionary with the follows:

 using (var file = File.OpenWrite("dictionary.txt"))
                foreach (KeyValuePair<string, string> entry in dictionary)
                {
                    streamwriter.WriteLine(entry.Key + entry.Value);
                }

How do I re-open this file and store the saved data back into a new dictionary?

UPDATE Answered

After `sw.WriteLine(entry.Key + entry.Value);` you're not really able to decide, where key ends and value begins ... — MarcinJuraszek, Mar 11 '13 at 22:31

score 3 · Accepted Answer · edited May 23 '17 at 10:25

3

You need serialize it to save it, then deserialize it to load it.

Your code just writes each key-value pair to a file on a separate line. This won't work because there's no delimiter between the two. There is no way to know where the Key part stops and the Value part begins. You need a better method of serializing your dictionary.

There are many ways to do this, but just to name a few, you can use XML (see this SO question) or JSON (see this SO Question).

edited May 23 '17 at 10:25

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answered Mar 11 '13 at 22:31

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I see, I think I know what to do now, Thanks! – Teachme Mar 11 '13 at 22:38

How do I load a saved dictionary from a file?

1 Answers1