How to separate comma separated and where condition in LINQ - sql-server

Question

I have a giftcardamounts in database table.
Column contains dollar and comma separated values.
There are 40 rows.
Ex:
row 1: giftcardamounts : ($10,$20,$30,$40,$50)
row 2: giftcardamounts : ($100,$200,$30,$40,$50)
row 3: giftcardamounts : ($10,$20,$300,$400,$500)
...etc
From frontend there is an input is giftcardselectedamount
Ex: giftcardselectedamount=500
Based on this input amount in need to write LINQ query on dollar and comma separated list of Values.
Please help me how to write this.

Answer 1

Like commenters have noted, you should show some effort in reaching to an answer. Also your question isn't quite clear. Are you asking to return the row with a matching amount? If so you can try the following approach, which returns the first row that contains the dollar amount specified:
void Main()
{
var data = new[] {
"$10,$20,$30,$40,$50",
"$100,$200,$30,$40,$50",
"$10,$20,$300,$400,$500"};
var giftcardSelectedAmount = 500M;
var matchingRow = data.FirstOrDefault(x => x
.Split(',')
.Any(v => decimal.Parse(v, NumberStyles.Currency) == giftcardSelectedAmount));
Console.WriteLine(matchingRow);
}
I can easily modify this answer to return all matching rows, a count of occurrences, or a count of rows with occurrences. Let me know if you need any of these modifications and I can modify my answer to add these.