Question

I am developing an asp.net application where i have a dataset having 3 tables i.e. ds.Tables[0], Tables[1] and Tables[2]

I need to find minimum number and maximum number out of all the 3 tables of dataset. How to do that?

I found similar question in SO here but not sure how that would help me getting my way?

UPDATED:

 double minValue = double.MinValue;
 double maxValue = double.MaxValue;
 foreach (DataRow dr in dtSMPS.Rows)
 {
            double actualValue = dr.Field<double>("TOTAL_SUM");  // This fails specifying type cast error
            minValue = Math.Min(minValue, actualValue);
            maxValue = Math.Max(maxValue, actualValue);
 }

Please guide! Thanks.

Answer 1

You could use an extra for loop added to the solution you have already linked to.
I.e.

int minAccountLevel = int.MaxValue;
int maxAccountLevel = int.MinValue;

for (int i = 0; i < 3; i++)
{
var table = ds.Tables[i];
foreach (DataRow dr in table.Rows)
{
    int accountLevel = dr.Field<int>("AccountLevel");
    minAccountLevel = Math.Min(minAccountLevel, accountLevel);
    maxAccountLevel = Math.Max(maxAccountLevel, accountLevel);
}
}