If the count of records in the two array is the same, its easy.
for (int i=0;i<=arrLeft.count;i==)
{
Console.Writeline(arrLeft[i] + arrRight[i]);
}
If the count is different, then try something like -
int minCount;
if (arrLeft.Length > arrRight)
{
minCount = arrRight;
}
else
{
minCount = arrLeft;
}
for (int i=0;i<=minCount;i==)
{
Console.Writeline(arrLeft[i] + arrRight[i]);
}