Question

I have the following method:

public static DataSet BringProducts()
{
    DataSet dataSet = new DataSet();
    var dir = @"ProductsCookieData.xml";
    if (File.Exists(dir))    //without File.Exists, same problem.
    {
        dataSet.ReadXml(dir);
    }
    return dataSet;
}

The file exists but the method does not see it ever. The file is in C:\, I tried in other locations and the same happens. Also tried without using static.

If I don’t use the File.Exists(), FileNotFoundException is throwing.

Answer 1

With the way you declared the file

var dir = @"ProductsCookieData.xml";

Your file has to be in the same directory as your code/current webpage and not in C:. You can give permission to C:\ and change your code to

var dir = @"C:\ProductsCookieData.xml";

Sometimes, the file can be copied to your application folder, root or special folder and accessed with Server.MapPath

var dir = Server.MapPath("~/ProductsCookieData.xml");