IList<IList<string>> to 2D String Array in C# [duplicate]

Question

I have a list of list strings. And I want to convert it to 2D string.

I tried the following the code

IList<IList<string>> string2DList;
string[,] string2D = string2DList.ToArray();

but the above code gives an error on the second line that string2DList.ToArray() is the array of List.

Please share a minimal reproducible example with sample inputs and expected outputs. — mjwills
– mjwills, Commented Jul 20, 2021 at 5:56
Not sure why this question is downvoted and closed. The reference duplicate How to convert list of arrays into a multidimensional array deals with List of 1D array, but my question is about list-of-string-list. — Ajay
– Ajay, Commented Jul 20, 2021 at 6:49
I am not sure. But either way, a minimal reproducible example will help you get an answer faster. — mjwills
– mjwills, Commented Jul 20, 2021 at 6:49

Bharat · Accepted Answer · 2021-07-20 06:07:12Z

-1

Does this help?

string[][] string2D = string2DList.Select(a => a.ToArray()).ToArray();

answered Jul 20, 2021 at 6:07

Bharat

1,1958 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

SomeBody Over a year ago

I believe it was downvoted because it creates a nested array instead of a multidimensional array.

Bharat Over a year ago

But if we understand the difference between [,] and [][]. string[,] is a rectangular array, while string[][] is known as a "jagged array". In this example its not possible to convert to rectangular array as we can never assure that each list has same length of child strings.

mjwills Over a year ago

Hence why we need a minimal reproducible example @Bharat.

Collectives™ on Stack Overflow

IList<IList<string>> to 2D String Array in C# [duplicate]

1 Answer 1

3 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Linked

Related