Sonic.exe Download [portable] May 2026

if (!string.IsNullOrWhiteSpace(expectedHash) && !computed.Equals(expectedHash, StringComparison.OrdinalIgnoreCase)) throw new InvalidDataException( $"Hash mismatch! Expected expectedHash, got computed.");

var progress = new Progress<(long downloaded, long? total)>(p => if (p.total.HasValue) double percent = (double)p.downloaded / p.total.Value * 100; progressBar.Value = (int)percent; lblStatus.Text = $"Downloading… percent:F1% (p.downloaded / 1024:#,##0 KB)"; else lblStatus.Text = $"Downloading… p.downloaded / 1024:#,##0 KB"; ); sonic.exe download

// 4️⃣ Verify SHA‑256 (optional but strongly recommended) await VerifyHashAsync(destinationFilePath, expectedHash: null); var progress = new Progress&lt

public static class SonicDownloader

var buffer = new byte[81920]; long totalRead = existingBytes; int read; progressBar.Value = (int)percent

private async void BtnDownload_Click(object sender, EventArgs e) btnDownload.Enabled = false; lblStatus.Text = "Starting download…";