Question

I have a membership table, which includes

MemberID(int), 
Username(varchar16), 
Password... etc.

How would I get the MemberID if I know only the username? I’m using SQL ASP.Net C#.

Answer 1

Since you know the value of the username. Use it as the condition in your where clause. I assumed here that username is unique or else you will have all IDs of the members that matches to the specified username.

SELECT MemberID
FROM Membership
WHERE Username = 'usernameHere'

try this, since you are using ADO.Net

// other codes heres 
string MemberID = cmd.ExecuteScalar().ToString();
// the MemberID variable already holds the value of the ID
// that matches your username.