CODEWITHSUNDEEP
c#asp.netlinq
Samiey Mehdi
Samiey Mehdi

Reputation: 9424

How to search in 2D array by LINQ?

I have an 2D array like this:

string[,] arr=
{
    {"1","ali"},
    {"2","mehdi"},
    {"3","john"},
    {"4","milad"},
};

i search name in 2nd column by for statement like this:

string name="";
for (int i = 0; i < arr.GetUpperBound(0); i++)
{
     if (arr[i, 1].StartsWith("m"))
     {
         name = arr[i, 1];
         break;
     }
}
Response.Write(name);

i want use LINQ instead of for statement to get the first name that start with 'm'.
how to convert above for statement to LINQ.

Upvotes: 2

Views: 559

Answers (1)

MarcinJuraszek
MarcinJuraszek

Reputation: 125650

var name = arr.Cast<string>()
              .Where((x, i) => i % 2 == 1 && x.StartsWith("m"))
              .First();

i % 2 == 1 will take only items from second column and x.StartWith("m") will take only names that start with 'm'.

And you have to use Cast<string>() before other LINQ methods, because multidimensional arrays does not implement generic IEnumerable<T>.

Upvotes: 4

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