Storing a value from SQL database to a variable

Question

I tried this code to extract a single value from my database and store it in a variable. But it extracts the value Supplier ID instead of Quantity .

string query3 = "SELECT Quantity FROM Supplier WHERE [Supplier ID]='"+supplierid+"'";
SqlCommand cmd3 = new SqlCommand(query3, con);
con.Open();
string temporaryquantity = cmd.ExecuteScalar().ToString();
MessageBox.Show(temporaryquantity);

How can I extract Quantity instead of Supplier ID ?

Answer 1

Your query will return the Quantity field... if you execute it . Your variable naming is unfortunate - you're creating cmd3 and executing cmd .

Execute cmd3 , and your result will be as expected.