I have an matrix in this format that I am trying to validate and remove first row:

3 4
0 0 0
0 0 0
0 0 0
0 0 0

Where the first line is and the other lines are the actual data.

Width Height

What is the best way to A remove the first row, and B validate that all rows meet the Width Height Criteria specified? I could do a simple for loop and copy them but I am looking for a more elegant way to do it? Maybe with Linq or one of the Collection Methods?

So far I have:

 string[] lines = File.ReadAllLines(fileName);
 //first line is width/hight
 int length  = lines.Length ==0 ;
 if(|| (length > 0 && lines[0].Length !=2 ) ){
     throw new InvalidDataException("File is not correctly formated:" + fileName);
 }

 int width = lines[0][0];
 int hieght = lines[0][1];

 //Check Row count
 if(length != height -1){
   throw new InvalidDataException("Invalid missing rows in the Matrix definition");
 }

 //make sure the file is correctly formated with width and height:
 if(lines.Any(x=>x.Length != Width)){
     //I know this fails because of first line
     throw new InvalidDataException("Invalid Width in a row in the Matrix");
 }

Any suggestions on a better way to validate input?

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