Use For Each/Next to find an element in a two dimension array : Multiple dimensional array « Collections « VB.Net Tutorial

1. VB.Net Tutorial
2. Collections
3. Multiple dimensional array

Module modForEach

   Sub Main()
      Dim gradeArray As Integer(,) = New Integer(,) _
         {{77, 68, 86, 73}, {98, 87, 89, 81}, {70, 90, 86, 81}}

      Dim grade As Integer
      Dim lowGrade As Integer = 100

      For Each grade In gradeArray

         If grade < lowGrade Then
            lowGrade = grade
         End If

      Next

      Console.WriteLine("The minimum grade is: {0}", lowGrade)
   End Sub ' Main

End Module

The minimum grade is: 68