Write List>> to text file?

Question

I was wondering if anyone knows a good way of writing this. I have a list of key value pairs. The key is a simple string and the value is a list of strings. I\'m trying to write

Answer 1

File.WriteAllLines(@"C:\Users\S\Downloads\output.txt",
         xEleAlt.SelectMany(x=> x.Value, (x,y)=> x.Key + " Val's: " + y).ToArray());

//Result
Queue0  ....
Queue0  ....
......
Queue1  ....
Queue1  ....
....

NOTE: I'm not sure if you want to join all the strings in the List to make the value for each entry. If you want so, refer the answer of Douglas