I want to use stored procedures in C# to get data from a SQL Server table. I want to print the city with the id that I'll pass as a parameter, but I don't know the correct syntax of using parameters like that for a stored procedure in C#.
This is the C# code that I'm using:
string connString = ConfigurationManager.ConnectionStrings["MyConnString"].ConnectionString;
using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open();
SqlCommand command = new SqlCommand("SP_GetCityByID where id = 2", conn);
command.CommandType = CommandType.StoredProcedure;
SqlParameter param = command.Parameters.Add("@ID", SqlDbType.Int);
param.Direction = ParameterDirection.Input;
command.ExecuteNonQuery();
Console.WriteLine(param.Value);
}
SqlCommand command = new SqlCommand("SP_GetCityByID ", conn);
You don't put a where
condition when you call a stored procedure. where
condition needs to be inside the body of stored procedure which should compare the id
column of your city table with @ID
parameter you are passing to stored procedure. Secondly, ExecuteNonQuery
function which you have written at the end will not serve your purpose. Use ExecuteScalar
function instead as given below:
String cityName= command.ExecuteScalar();
I am assuming your stored procedure accepts parameter @ID
and returns matching city name in the form of table.
provide parameter as below:
string connString = ConfigurationManager.ConnectionStrings["MyConnString"].ConnectionString;
using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open();
SqlCommand command = new SqlCommand("SP_GetCityByID", conn);
command.CommandType = CommandType.StoredProcedure;
SqlParameter param = command.Parameters.Add("@ID", SqlDbType.Int).Value = 2;
//param.Direction = ParameterDirection.Input;
command.ExecuteNonQuery();
Console.WriteLine(param.Value);
}
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