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Improve chunk upload controller #24

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a55a623
Improve chunk upload controller
dimodi Jun 11, 2026
9c0077a
Use simpler namespace syntax in controllers
dimodi Jun 11, 2026
fd684ba
Continued
dimodi Jun 11, 2026
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7 changes: 4 additions & 3 deletions Dimodi.Telerik.Blazor.Templates.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -15,16 +15,17 @@
<PackageProjectUrl>https://github.com/dimodi/project-templates</PackageProjectUrl>
<PackageReadmeFile>README.md</PackageReadmeFile>
<PackageReleaseNotes>
NEW
* Add support for Telerik UI for Blazor 14.0.0.
FIXED
* Create a new file instead of appending on first chunk upload.
* Use simpler namespace declaration syntax in controllers.
</PackageReleaseNotes>
<PackageRequireLicenseAcceptance>false</PackageRequireLicenseAcceptance>
<PackageTags>Telerik;Blazor;dotnet-new;templates</PackageTags>
<PackageType>Template</PackageType>
<RepositoryUrl>https://github.com/dimodi/project-templates</RepositoryUrl>
<TargetFramework>netstandard2.0</TargetFramework>
<Title>Telerik Blazor Project and Item Templates</Title>
<Version>6.5.7</Version>
<Version>6.5.8</Version>
</PropertyGroup>

<ItemGroup>
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197 changes: 104 additions & 93 deletions Items/UploadController/UploadController.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,128 +5,139 @@
using System.Text;
#endif

namespace {TVAR_ROOTNAMESPACE}.Controllers
{
[Route("{TVAR_ROUTE}")]
namespace {TVAR_ROOTNAMESPACE}.Controllers;

[Route("{TVAR_ROUTE}")]
#if (ApiController)
[ApiController]
[ApiController]
#endif
public class UploadController : ControllerBase
{
private IWebHostEnvironment HostingEnvironment { get; set; }
public class UploadController : ControllerBase
{
private IWebHostEnvironment HostingEnvironment { get; set; }

private readonly string RootPath;
private readonly string RootPath;

public UploadController(IWebHostEnvironment hostingEnvironment)
public UploadController(IWebHostEnvironment hostingEnvironment)
{
HostingEnvironment = hostingEnvironment;
RootPath = HostingEnvironment.WebRootPath;
}

[HttpPost]
public async Task<IActionResult> Save(IFormFile files)
{
if (files is null)
{
HostingEnvironment = hostingEnvironment;
RootPath = HostingEnvironment.WebRootPath;
Response.StatusCode = 400;
await Response.WriteAsync("No file to upload.");
return new EmptyResult();
}

[HttpPost]
public async Task<IActionResult> Save(IFormFile files)
try
{
if (files != null)
{
try
{
string saveLocation = Path.Combine(RootPath, files.FileName);

using FileStream fs = new(saveLocation, FileMode.Create);
await files.CopyToAsync(fs);

Response.StatusCode = 201;
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Upload failed: {ex.Message}");
}
}
string saveLocation = Path.Combine(RootPath, files.FileName);

return new EmptyResult();
using FileStream fs = new(saveLocation, FileMode.Create);
await files.CopyToAsync(fs);

Response.StatusCode = 201;
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Upload failed: {ex.Message}");
}

return new EmptyResult();
}

#if (ChunkUpload)
[HttpPost]
public async Task<IActionResult> SaveChunk(IFormFile files, [FromForm] string chunkMetadata)
[HttpPost]
public async Task<IActionResult> SaveChunk(IFormFile files, [FromForm] string chunkMetadata)
{
if (files is null)
{
Response.StatusCode = 400;
await Response.WriteAsync("No file to upload.");
return new EmptyResult();
}

try
{
if (files != null)
DataContractJsonSerializer dcSerializer = new(typeof(ChunkMetadata));
using MemoryStream ms = new(Encoding.UTF8.GetBytes(chunkMetadata));

if (dcSerializer.ReadObject(ms) is not ChunkMetadata metadata)
{
try
{
DataContractJsonSerializer dcSerializer = new(typeof(ChunkMetadata));
MemoryStream ms = new(Encoding.UTF8.GetBytes(chunkMetadata));

if (dcSerializer.ReadObject(ms) is not ChunkMetadata metadata)
{
throw new NullReferenceException("Chunk metadata serialization failed.");
}

string saveLocation = Path.Combine(RootPath, metadata.FileName);

using FileStream fs = new(saveLocation, FileMode.Append);
await files.CopyToAsync(fs);

Response.StatusCode = 201;
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Upload failed: {ex.Message}");
}
throw new NullReferenceException("Chunk metadata serialization failed.");
}

return new EmptyResult();
string saveLocation = Path.Combine(RootPath, metadata.FileName);

using FileStream fs = new(saveLocation, metadata.ChunkIndex == 0 ? FileMode.Create : FileMode.Append);
await files.CopyToAsync(fs);

Response.StatusCode = 201;
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Upload failed: {ex.Message}");
}

return new EmptyResult();
}

#endif
[HttpPost]
public async Task<IActionResult> Remove([FromForm] string files)
[HttpPost]
public async Task<IActionResult> Remove([FromForm] string files)
{
if (string.IsNullOrEmpty(files?.Trim()))
{
Response.StatusCode = 400;
await Response.WriteAsync("No file to delete.");
return new EmptyResult();
}

try
{
if (files != null)
string fileLocation = Path.Combine(RootPath, files);

if (System.IO.File.Exists(fileLocation))
{
try
{
string fileLocation = Path.Combine(RootPath, files);

if (System.IO.File.Exists(fileLocation))
{
System.IO.File.Delete(fileLocation);
}
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Delete failed: {ex.Message}");
}
System.IO.File.Delete(fileLocation);
}

return new EmptyResult();
}
catch (Exception ex)
{
Response.StatusCode = 500;
await Response.WriteAsync($"Delete failed: {ex.Message}");
}

return new EmptyResult();
}
}
#if (ChunkUpload)

[DataContract]
public class ChunkMetadata
{
[DataMember(Name = "fileId")]
public string FileId { get; set; } = string.Empty;
[DataContract]
public class ChunkMetadata
{
[DataMember(Name = "fileId")]
public string FileId { get; set; } = string.Empty;

[DataMember(Name = "fileName")]
public string FileName { get; set; } = string.Empty;
[DataMember(Name = "fileName")]
public string FileName { get; set; } = string.Empty;

[DataMember(Name = "fileSize")]
public long FileSize { get; set; }
[DataMember(Name = "fileSize")]
public long FileSize { get; set; }

[DataMember(Name = "contentType")]
public string ContentType { get; set; } = string.Empty;
[DataMember(Name = "contentType")]
public string ContentType { get; set; } = string.Empty;

[DataMember(Name = "chunkIndex")]
public long ChunkIndex { get; set; }
[DataMember(Name = "chunkIndex")]
public long ChunkIndex { get; set; }

[DataMember(Name = "totalChunks")]
public long TotalChunks { get; set; }
}
[DataMember(Name = "totalChunks")]
public long TotalChunks { get; set; }
}
#endif
}
27 changes: 13 additions & 14 deletions Projects/Net8/TelerikBlazorWebApp/TelerikBlazorWebApp/Controllers/CultureController.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,23 +3,22 @@

// For more information on enabling MVC for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860

namespace TelerikBlazorWebApp.Controllers
namespace TelerikBlazorWebApp.Controllers;

[Route("[controller]/[action]")]
public class CultureController : Controller
{
[Route("[controller]/[action]")]
public class CultureController : Controller
public IActionResult Set(string culture, string redirectUri)
{
public IActionResult Set(string culture, string redirectUri)
if (culture != null)
{
if (culture != null)
{
HttpContext.Response.Cookies.Append(
CookieRequestCultureProvider.DefaultCookieName,
CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(culture, culture)),
new CookieOptions() { Expires = new DateTimeOffset(DateTime.Now.AddDays(30)) }
);
}

return LocalRedirect(redirectUri);
HttpContext.Response.Cookies.Append(
CookieRequestCultureProvider.DefaultCookieName,
CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(culture, culture)),
new CookieOptions() { Expires = new DateTimeOffset(DateTime.Now.AddDays(30)) }
);
}

return LocalRedirect(redirectUri);
}
}
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