Question

I’m doing a program in C# where I can select and put data into a dataGridView by year and month. The year part is easy. I select the year from a comboBox and I do this query:

"SELECT * FROM table WHERE YEAR(date) = '" + year_comboBox.Text + "'";

Because the year format in the database is 2010, 2011, 2012 and so forth, it all works fine. But when it comes to months, they’re in my comboBox as January, February, March etc. and their format in the database is 01, 02, 03, etc. So I would need a different type of query or I’d need to write more code so I can convert the January, February and the other month strings into 01, 02 and so forth and that’s not really code-efficient.

So is there a simple type of query I can make to make this work without typing having to convert my month strings?

Answer 1

You can convert a month’s name as a string into a DateTime using the DateTime.ParseExact method:

var monthString = DateTime.ParseExact("April", "MMMM", System.Globalization.CultureInfo.InvariantCulture).Month.ToString("00");

The code above will assign “04” to monthString.