How to validate column in between given position?

Question

i have 45 rows and 45 columns in data table.
* validate third column,(12 Th row to 39 row)in this in between field have at least one value(my requirement is the value is '1')
* if 3rd column 19 row value is '1' then other fields or empty.that's not a problem.
* if no row have any value then only through the error
How to do it.       What I have tried:
i have used looping for rows and column given below.
Hide Copy Code for(int j= 3; j<= columncountvalue; j++)
{
for (int i = 12; i <= rowcountvalue; i++)
{
if (ds.Tables[s].Columns[3][i].ToString().Trim() == "")
{
// statements
}
}
}
now i want which condition used for that requirements.

Tapan Patel · Accepted Answer

for (int j= 3; j ) { bool flag= false ; for (int i = 12; i { if (ds.Tables[s].Columns[3][i].ToString().Trim() == "1") { flag= true ; break ; } } if (!flag) { throw new Exception(); } }