/*
* protected async Task<string> SaveFileAsync(string contentUrl, string fileNamePrefix)
* {
* try
* {
*
* // save file first
* if (HttpContext.Request.Form.Files.Any())
* {
* // remove old files
* var fileNames = contentUrl?.Split('|', StringSplitOptions.RemoveEmptyEntries);
* foreach (var item in fileNames)
* {
* if (System.IO.File.Exists(item))
* {
* System.IO.File.Delete(item);
* }
* }
*
* for (int i = 0; i < HttpContext.Request.Form.Files.Count; i++)
* {
* var file = HttpContext.Request.Form.Files[i];
*
* var ext = Path.GetExtension(file.FileName);
* var fileName = $"{fileNamePrefix ??= "_"}{Guid.NewGuid()}{ext}";
*
* var path = Path.Combine(_env.ContentRootPath, "files", fileName);
* using (var stream = new FileStream(path, FileMode.Create))
* {
* await file.CopyToAsync(stream);
* }
*
* contentUrl += path + "|";
* }
* }
*
* // remove last |
* var fileUrl = contentUrl?.Substring(0, contentUrl.Length - 1);
*
* return fileUrl;
* }
* catch (Exception ex)
* {
*
* throw new Exception("File not upload", ex);
* }
*
* }
*/
protected async Task <(string path, string virtualPath)> SaveFileByteAsync(string contentUrl, string fileNamePrefix, string folder = "files", bool saveToDisk = false)
{
try
{
var virtualPath = contentUrl;
var path = string.Empty;
// save file first
if (DataUrl.IsValidContentUrl(contentUrl))
{
var bytes = DataUrl.ToBytes(contentUrl);
if (saveToDisk || (bytes.Length / 1024 / 1024) > MaxSizeAllow())
{
var ext = DataUrl.ToFileExtension(contentUrl);
var fileName = $"{fileNamePrefix}{Guid.NewGuid()}.{ext}";
virtualPath = $"{folder}/{ fileName }";
path = Path.Combine(_env.ContentRootPath, virtualPath);
using (var stream = new FileStream(path, FileMode.Create))
{
await stream.WriteAsync(bytes, 0, bytes.Length);
}
virtualPath = "/" + virtualPath;
}
}
return(path, virtualPath);
}
catch (Exception ex)
{
throw new Exception("File not upload", ex);
}
}