C# - Web Site - SQL Select Statement

Question

I want to use a select statement to find if there is a record that already exists. I\'ve put the code below but it throws an error at the dReader = comm.ExecuteReader(); and i\'

Answer 1

Change your == to =. That is invalid SQL as it is.

Also if txtID.Text is non-numeric then it needs to be in single quotes. You should not be constructing your SQL like this, instead use a parameter:

comm.CommandText = "SELECT * FROM Customers WHERE CustomerID = @CustomerID";
comm.Parameters.AddWithValue("CustomerID", txtID.Text);    

More Info

C# using statement

SQL reference

SQL injection (why you should parameterize your queries)