1.) Do not reuse a parameter
2.)
VALUES(@str, @new) ParameterName="@str." ParameterName="@new."
As
the error indicates, you are using the parameters @str and @new and
adding two different parameters. Read the error message, it is there
for a reason and told you exactly what is wrong! 3.) Here is how I would write it (in this context).using (SQLiteConnection cnn = new SQLiteConnection("Data Source=C://EEk.db"))
using (SQLiteCommand cmd = Database.CreateCommand())
{
cmd.CommandText = "INSERT INTO test (Field1,fname) VALUES(@str, @new)";
cmd.Parameters.AddWithValue("@str", textBox1.Text);
cmd.Parameters.AddWithValue("@new", textBox2.Text);
cnn.Open();
cmd.ExecuteNonQuery();
cnn.Close();
} While you can use DbConnection and DbCommand and make a factory
pattern sort of implementation (which I doubt is going here...) I
suggest you do not. Use the SqliteConnection, SqliteCommand, etc. The
provider specific objects generally have features that make coding
easier. In this case, the AddWithValue method.
