How can I access a data file from a Unit test method?

Here is how I am trying to access the file-

1. 
   

   I added a folder "TestData" in my unit test project

   
   


2. 
   

   Added a file via Add->Existing Item. Set the Build Action=None, Copy To Output Directory= Copy Always

   
   

Accessing the file in the unit test method as below-

string fileName = System.IO.Path.Combine(
            System.IO.Path.GetDirectoryName(
            System.Reflection.Assembly.GetExecutingAssembly().Location), "TestData\\TestExcel2007File1.xlsx");

XmlDocument actual;
actual.Load(fileName);       //Throws exception saying cannot find part of the file path

I also tried using the Method attribute as-

[TestMethod, DeploymentItem(@"Test Data\", @"Test Data\")]

None seems to work.

The file path generated is

"D:\\MyProject\\TestResults\\MACHINE_NAME 2015-01-23 05_21_45\\Out\\TestData\\Excel2007TestData.xlsx"

And the Out folder does not have the TestData folder, or the Excel file.