SQL Server 2014: Convert and save location coordinates

Question

I want to save coordinates to SQL Server.

Decimal latitude, longitude;

String[] location = txt_coord.Text.Split(',');
latitude = Convert.ToDecimal(location[0]);
longitude = Convert.ToDecimal(location[1]);

Using LINQ to save

tbl_location loc = new tbl_location();
loc.ID = personal.id_personalinfo;
loc.latitude = latitude;
loc.longitude = longitude;

db.tbl_locations.InsertOnSubmit(loc);

db.SubmitChanges();

Error actually occurs on the conversion, I used the decimal(18, 9) data type in SQL Server. Error is:

System.FormatException: Input string was not in a correct format.

Does this mean that the string itself is the error...!?

Also, is it right to use decimal for coordinates? should I use geography (internet says LINQ does not support this data type.)

Help.

Answer 1

The exception you are getting indicates that Convert.ToDecimal(...) is failing because of invalid input parameters.

The value of either location[0] or location[1] is not what you expect it to be (if this is where the exception occurs).