/// <summary>
/// 计算文件Hash
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
private async Task <FileHashInfo> ComputeFileHash(FileInfo file)
{
using (SHA256 sha256 = SHA256.Create())
{
try
{
using FileStream fileStream = file.Open(FileMode.Open);
fileStream.Position = 0;
byte[] hv = await sha256.ComputeHashAsync(fileStream);
FileHashInfo fi = new FileHashInfo(file, hv);
fileStream.Close();
FileHashComputed?.Invoke(this, new FileHashInfoEventArgs(fi));
return(fi);
}
catch (Exception ex)
{
FileHashError?.Invoke(this, new FileHashErrorEventArgs(new FileHashError(file, ex)));
return(new FileHashInfo(file, null));
}
}
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="fileHashError"></param>
public FileHashErrorEventArgs(FileHashError fileHashError)
{
FileHashError = fileHashError;
}