turn c# code into mysql function - mysql

Question

I have the following code in C# that I would like to turn into a MySQL snippet instead?
foreach (DataRow row in dtBills.Rows)
{
classes.UtilityBill ub = new classes.UtilityBill(row);
if (ub.ApprovedBy > 0)
{
if (ub.RemainingBalance() > 0) { totalOutstanding += ub.RemainingBalance(); numberOfUnpaidBills++; }
if (ub.RemainingBalance() > 0 && ub.IsOverDue()) { numberOfOverdueBills++; }
}
else
{
if (ub.ApprovedBy == 0)
{
awaitingApproval++;
}
else
{
rejectedBills++;
}
}
}
ub.RemainingBlaance() basically checks two fields in the table and subtracts, amount_due - amount_paid
What I'm looking to have returned is a single row that looks something like:
totalOutstanding, numberOfUnpaidBills, numberOfOverdueBills, awaitingApproval, rejectedBills
Original table:
I know that this might come across like a lazy question, but I have never dealt with coding in mysql, just simple queries, and I have no idea on how to start. A push in the right direction would suffice, not a complete solution.
Thanks!

Answer 1

To query mysql you can use the mysql.data nuget package. You can look up their documentation. I created a nuget to simplify code from any c# framework to mysql as well. If you don't mind third party nugets, you can try it out. It is called mysql.simple. From what I understand from what the code is trying to do, here is a small code for pulling data:
using (Database db = ConnectionString) // initializes connection
{
// you can omit the below select function if you would like to select all
using (var Row = db.Select("unit_cost, start_reading")
From("tblName").Query()
while(Row.Read()){ // gets each row
ub.unit_cost = Row["unit_cost"];
ub.start_reading= Row["start_reading"];
.
.
.
}
}
The db object above has select, update and insert functions with all variations including insert statements with selects. However if you would like to use raw sql queries, you can directly use db.Query("sql query here"). You can see more documentations here http://mysqlsimple.azurewebsites.net/docs
Here is a sample mySql stored procedure I had with me:
DELIMITER //
DROP PROCEDURE IF EXISTS proc_IF;
CREATE PROCEDURE proc_IF (IN param1 INT)
BEGIN
DECLARE variable1 INT;
SET variable1 = param1 + 1;
IF variable1 = 0 THEN
SELECT variable1;
END IF;
IF param1 = 0 THEN
SELECT 'Parameter value = 0' ;
ELSE
SELECT 'Parameter value <> 0' ;
END IF;
END //
This example contains parameters, variables and if statement examples.
You can call this in c# something like this:
db.QueryValue("CALL proc_IF (#0)", myVal);