How to convert char[][] to char[,]

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C#

C#5.0

I want to convert char[][] to char[,] or
List<char[]> to char[,].

please help me for solve this

Posted 11-Jun-15 2:11am

kave2011

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OriginalGriff · Accepted Answer · 2015-06-11T02:25:00

You can't necessarily do that.
An array of char[][] or List<char[]>is a jagged array - not all the elements in the collection are defined as being the same length.
For example:

C#

char[][] arr = new char[][] {{'1','2'}, {'1', '2', '3'}, {'1', '2'}};

You can't convert that to a char[,] array because the second dimension size specifier is different for the first and second rows - and char is not a nullable type, so you can't even assign a "default value" to "missing" elements to tidy it up!

It can be done: http://stackoverflow.com/questions/26291609/converting-jagged-array-to-2d-array-c-sharp[^] but there is a good chance you would be better off rethinking what you are doing to create the jagged array in the first place!

kave2011 · Accepted Answer · 2015-06-13T05:21:00

C#

static char[,] To2D(List<char[]> a)
        {
            int Max = 0;
            int aCount=a.Count;
            for (int i = 0; i < aCount; i++) Max=Max<a[i].length?a[i].length:max;>
            char[,] Out = new char[aCount, Max];
            for(int i=0;i<acount;i++)>
                for(int j=0;j<a[i].length;j++)>
                {
                    Out[i, j] = a[i][j];
                }
            return Out;
        }

How to convert char[][] to char[,]

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