Set CommandType and CommandText of IDbConnection : IDbConnection « Database ADO.net « C# / C Sharp

1. C# / C Sharp
2. Database ADO.net
3. IDbConnection

Set CommandType and CommandText of IDbConnection

 
using System;
using System.Data;
using System.Data.SqlClient;

class MainClass {
    public static void ExecuteNonQueryExample(IDbConnection con) {
        IDbCommand com = con.CreateCommand();
        com.CommandType = CommandType.Text;
        com.CommandText = "UPDATE Employees SET Title = 'Sales Director' WHERE EmployeeId = '5'";

        int result = com.ExecuteNonQuery();
        Console.WriteLine(result);
    }

    public static void ExecuteReaderExample(IDbConnection con) {
        IDbCommand com = con.CreateCommand();
        com.CommandType = CommandType.StoredProcedure;
        com.CommandText = "Ten Most Expensive Products";

        using (IDataReader reader = com.ExecuteReader()) {
            while (reader.Read()) {
                Console.WriteLine("  {0} = {1}", reader["TenMostExpensiveProducts"], reader["UnitPrice"]);
            }
        }
    }

    public static void ExecuteScalarExample(IDbConnection con) {
        IDbCommand com = con.CreateCommand();
        com.CommandType = CommandType.Text;
        com.CommandText = "SELECT COUNT(*) FROM Employees";

        int result = (int)com.ExecuteScalar();
        Console.WriteLine("Employee count = " + result);
    }

    public static void Main() {
        using (SqlConnection con = new SqlConnection()) {
            con.ConnectionString = @"Data Source = .\sqlexpress;Database = Northwind; Integrated Security=SSPI";
            con.Open();
            ExecuteNonQueryExample(con);
            ExecuteReaderExample(con);
            ExecuteScalarExample(con);
        }
    }
}

 

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