SQL update statement in C#

Question

I have table \"Student\"

   P_ID   LastName  FirstName  Address  City

   1        Hansen    Ola                
   2        Svendson   Tov         


        

Answer 1

If you don't want to use the SQL syntax (which you are forced to), then switch to a framework like Entity Framework or Linq-to-SQL where you don't write the SQL statements yourself.

Answer 2

I dont want to use like this

That is the syntax for Update statement in SQL, you have to use that syntax otherwise you will get the exception.

command.Text = "UPDATE Student SET Address = @add, City = @cit Where FirstName = @fn AND LastName = @ln";

and then add your parameters accordingly.

command.Parameters.AddWithValue("@ln", lastName);
command.Parameters.AddWithValue("@fn", firstName);
command.Parameters.AddWithValue("@add", address);
command.Parameters.AddWithValue("@cit", city);  

Answer 3

command.Text = "UPDATE Student 
  SET Address = @add, City = @cit
  Where FirstName = @fn and LastName = @add";