.Net MySql error “The given key was not present in the dictionary”

Question

Trying to get simple count from table results in exception bellow. Tried different select statemens which also makes exception: \"SELECT * FROM goods\", but \"<

Answer 1

In place of this statement:

using (MySqlCommand cmd = new MySqlCommand("SELECT count(*) FROM goods", conn))

Use:

using (var cmd = new MySqlCommand("SELECT COUNT(*) FROM goods", conn))

and then convert it to int value by using ExecuteScalar(). Something like this:

int count = Convert.ToInt32(cmd.ExecuteScalar());