/// <summary>
/// Compares two files contents.
/// </summary>
/// <param name="filePath1">File or folder 1 to compare.</param>
/// <param name="filePath2">File or folder 2 to compare.</param>
/// <returns>True if file is modified. False - otherwise.</returns>
private static bool IsModified(string filePath1, string filePath2)
{
if (FsPath.IsFolder(filePath1) && FsPath.IsFolder(filePath2))
{
return(false);
}
try
{
if (new FileInfo(filePath1).Length == new FileInfo(filePath2).Length)
{
byte[] hash1;
byte[] hash2;
using (var alg = System.Security.Cryptography.MD5.Create())
{
using (FileStream stream = new FileStream(filePath1, FileMode.Open, FileAccess.Read, FileShare.None))
{
hash1 = alg.ComputeHash(stream);
}
using (FileStream stream = new FileStream(filePath2, FileMode.Open, FileAccess.Read, FileShare.None))
{
hash2 = alg.ComputeHash(stream);
}
}
return(!hash1.SequenceEqual(hash2));
}
}
catch (IOException)
{
// One of the files is blocked. Can not compare files and start sychronization.
return(false);
}
return(true);
}