string[] B = C.OfType<object>().Where(o =>o != null).Select(o => o.ToString()).ToArray();
I try to Convert Array C to string[]
but, Array C have a lot of null and I hope null change to " "
What Should I do?
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try this string[] B = C.OfType<string>().Where(o =>o != null).Select(o => o.ToString()).ToArray();BetterLateThanNever– BetterLateThanNever2017-04-21 17:36:32 +00:00Commented Apr 21, 2017 at 17:36
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2 Answers
You don't need OfType<object>(), simply call string.Concat:
var s = string.Concat(C.ToArray());
If you look at documentation:
The method concatenates each object in args by calling the parameterless ToString method of that object; it does not add any delimiters. String.Empty is used in place of any null object in the array.'
answered Apr 21, 2017 at 17:40
Alessandro D'Andria
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This should work:
var B = C.OfType<string>().Select(o => o ?? " ").ToArray();
.OfType<string>() will filter out all non-string values from C.
.Select(o => o ?? " ") will select the value, or " " if the value was null.
and .ToArray() will take the IEnumerable and turn it into a string[].
