Question

I have 3 arrays containing different information. 1 array contains a bunch of id’s, the second array contains a bunch of dates and the third contains a bunch of names.

I know this is a simple question but I cannot remember how to do it so I apologize for the stupidity.

The 3 arrays look like this:

string[] eventIDs = EventID.Split(',');
        string[] eventDates = eventCopyDate.Split(',');
        string[] invNames = investigatorNames.Split(',');

the values look like “john Doe,Mark Doe, Tim Doe” hence why the .Split
I’ve tried a nested for loop here but no success.

foreach (var id in eventIDs)
        {
            foreach (var date in eventDates)
            {
                foreach (var name in invNames)
                {
                    cmd.Parameters.Add(new SqlParameter("@EventID", SqlDbType.Int));
                    cmd.Parameters["@EventID"].Value = int.Parse(id);

                    cmd.Parameters.Add(new SqlParameter("@InvestigatorName", SqlDbType.NVarChar));
                    cmd.Parameters["@InvestigatorName"].Value = name;

                    cmd.Parameters.Add(new SqlParameter("@CopyDate", SqlDbType.DateTime));
                    cmd.Parameters["@CopyDate"].Value = Convert.ToDateTime(date);

                }//end name foreach

            }//end date foreach
        }//end id foreach

I know that this will just iterate them through an entire array first before going back to the second nested array. I am trying to iterate to the first value in the array, assign them to the variables then go through the second iteration.

So that arrayNames:”john Doe, Mark Doe” arrayDates”12/12/12, 10/12/12″ and arrayID:”234,235,236″ would be used like:

"john Doe" "12/12/12" "234"
"Mark Doe" "10/12/12" "235"

Answer 1

Don’t use foreach, just use a normal for loop and use your index to reference your arrays.

for (int i = 0; i < eventIDs.Length; i++)
{
    string eventID = eventIDs[i];
    string eventDate = eventDates[i];
    string invName = invNames[i];
}

This assumes that the three arrays are all equal length. If this is not the case then it is slightly more complicated.