How To Insert List of Record To the Database Using Linq

Question

Good day every one, Please i need little help, I have a list of record like this
lblID.Text = string.Join("<br/>", numbers);
gives the Numbers below...
6131
5241
3978
6824
3842//To Save to the database
int pin = int.parse(lblID.Text);
Now i want to insert those Numbers to the database
Persons ps = new Persons();
ps.Number = pin;
cdc.Persons.AddObject(ps);
cdc.SaveChanges();
it throws up error...
what i want to achieve on button insert
all Numbers will be inserted but before inserting the number it will check if those numbers exist first on the database
it should be like this on the database
ID Number
1 6131
2 5241
3 3978
4 6824
5 3842
thanks.. I do appreciate your time and effort

Answer 1

Hello,
>>Now i want to insert those Numbers to the database
For inserting a list of items to database, a loop statement is needed. I do not how you get these numbers, I assume they are stored in a collection and you could check below demo sample to insert these numbers and I assume your person table is identified:
using (DFDBEntities db = new DFDBEntities())
List<int> numbers = new List<int>() { 6131, 5241, 3978, 6824, 3842 };
for (int i = 0; i < numbers.Count; i++)
int number = numbers[i];
//Check if the local and database already contains this number
bool isRecordExist = db.Tables.Any(t => t.Number == number) || db.Tables.Local.Any(t => t.Number == number);
if (!isRecordExist)
Table t = new Table();
t.Number = number;
db.Tables.Add(t);
db.SaveChanges();
Regards.
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