I am trying to connect to an oracle database using C#.
Here is my code:
OracleConnection conn = new OracleConnection(); // C#
conn.ConnectionString = oradb;
conn.Open();
string sql = " select department_name from departments where department_id = 10"; // C#
OracleCommand cmd = new OracleCommand();
cmd.CommandText = sql;
cmd.Connection = conn;
cmd.CommandType = CommandType.Text; ///this is the line that gives the error
What is the proper way to set the command type? Thank you.
Using Store Procedure :
using (OracleConnection conn = new OracleConnection( oradb ))
{
conn.Open();
OracleCommand cmd = new OracleCommand("StoreProcedureName", con);
cmd.CommandType = CommandType.StoredProcedure;
//specify command parameters
//and Direction
using(OracleDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
//string s = reader.GetInt32(0) + ", " + reader.GetInt32(1);
}
}
}
CommandType.Text : (not mandatory to specify CommandType).
using (OracleConnection conn = new OracleConnection( oradb ))
{
string sql = @"SELECT department_name FROM departments
WHERE department_id = @department_id";
conn.Open();
OracleCommand cmd = new OracleCommand(sql, conn);
//specify command parameters
cmd.Parameters.Add(new OracleParameter("@department_id", 10));
using(OracleDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
//string s = reader.GetString(0);
}
}
}
Make sure you toss each of these pieces in a using() statement, ie
using( OracleConnection conn = new OracleConnection( oradb ) )
{
conn.Open();
using( OracleCommand cmd = new OracleCommand( "sql here", conn ) )
{
//cmd.Execute(); cmd.ExecuteNonQuery();
}
}
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