Using statement inside namespace section

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C#

OOP

Hi,

I came up with a taught what if i use "Using" statement inside a namespace section in a file (Customer.cs)?

Instead of using something like below

using System;
using System.Windows.Input;
using BusinessControls.PerformanceReport.Data;
using BusinessControls.PerformanceReport.View.PerformanceReport;
using BusinessControls.PerformanceReport.ViewModel.PerformanceReport;

namespace BusinessControls.PerformanceReport.Commands
{
......
}

what will happen when i use something like this.

using System;
using System.Windows.Input;


namespace BusinessControls.PerformanceReport.Commands
{
using Data;
using View.PerformanceReport;
using ViewModel.PerformanceReport;
......
}

logically the two are same but, There was some difference in loading. But i don't know what was that can anyone able to figure it out?