I have table "Student"
P_ID LastName FirstName Address City 1 Hansen Ola 2 Svendson Tove 3 Petterson Kari 4 Nilsen Johan ...and so on
How do i change edit code in C#
string firstName = "Ola";
string lastName ="Hansen";
string address = "ABC";
string city = "Salzburg";
string connectionString = System.Configuration.ConfigurationManager
.ConnectionStrings["LocalDB"].ConnectionString;
using (SqlConnection connection = new SqlConnection(connectionString))
using (SqlCommand command = connection.CreateCommand())
{
command.CommandText = "INSERT INTO Student (LastName, FirstName, Address, City)
VALUES (@ln, @fn, @add, @cit)";
command.Parameters.AddWithValue("@ln", lastName);
command.Parameters.AddWithValue("@fn", firstName);
command.Parameters.AddWithValue("@add", address);
command.Parameters.AddWithValue("@cit", city);
connection.Open();
command.ExecuteNonQuery();
connection.Close();
}
to edit entry where Lastname field has lastname value and FirstName field has firstname value.
I dont want to use like this
UPDATE Persons SET Address='Nissestien 67', City='Sandnes' WHERE LastName='Tjessem' AND FirstName='Jakob'
and i edited my original statement to
command.CommandText = "UPDATE Student(LastName, FirstName, Address, City)
VALUES (@ln, @fn, @add, @cit) WHERE LastName='" + lastName +
"' AND FirstName='" + firstName+"'";
but the statement is not getting executed, why is it throwing SQL exception ? Is there nay solution to it ?