Difference Between Executequery And Executenonquery In Ado.Net

string connectionString = @"[Your_Connection_string]"; 
string query = "[Your_Query]"; 
using (SqlConnection connection = new SqlConnection(connectionString)) 
{ 
        connection.Open(); 
        using (SqlCommand command = new SqlCommand(query, connection)) 
        { 
                  int result = command.ExecuteNonQuery(); 
        } 
} 

string connectionString = @"[Your_Connection_string]"; 
string query = "your_select_query"; 
using (SqlConnection connection = new SqlConnection(connectionString)) 
{ 
      connection.Open(); 
      using (SqlCommand command = new SqlCommand(query, connection)) 
      { 
              SqlDataReader reader = command.ExecuteReader(); 
              while (reader.Read()) 
              { 
                      Console.WriteLine(reader["column_name"]); 
              } 
      } 
} 

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