Archivos duplicados al subirlos en asp net mvc


When working with ASP.NET MVC, it is to encounter situations where users need to upload files. However, a common that arises is the presence of duplicate files. This can be problematic as it consumes unnecessary storage space and can lead to confusion for users. In this article, we will explore how to handle duplicate files when uploading them in ASP.NET MVC.

Identifying Duplicate Files

Before we can solve the issue of duplicate files, we need to be able to identify them. One way to do this is by comparing the file . When a user uploads a file, we can check if a file with the same name in the destination folder. If it does, we can consider it a duplicate.

// Check if file already exists
string fileName = Path.GetFileName(file.FileName);
string destinationPath = Path.Combine(Server.MapPath("~/Uploads"), fileName);

if (System.IO.File.Exists(destinationPath))
    // File already exists, handle duplicate
    // ...
    // File does not exist, proceed with upload
    // ...

Handling Duplicate Files

Once we have identified a duplicate file, we need to decide how to handle it. One is to rename the file by appending a identifier to its name. This ensures that each file has a unique name and avoids conflicts.

// Generate unique file name
string uniqueFileName = Guid.NewGuid().ToString() + "_" + fileName;

// Save the file with the unique name
file.SaveAs(Path.Combine(Server.MapPath("~/Uploads"), uniqueFileName));

By appending a unique identifier to the file name, we can ensure that each file has a distinct name and avoid duplicates.

Displaying Unique File Names

When displaying the uploaded files to users, it is important to show them the unique file names of the original file names. This helps to avoid confusion and ensures that users can easily identify each file.

// Get the list of uploaded files
string[] uploadedFiles = Directory.GetFiles(Server.MapPath("~/Uploads"));

foreach (string filePath in uploadedFiles)
    // Get the unique file name
    string uniqueFileName = Path.GetFileName(filePath);

    // Display the unique file name to the user
    // ...

By displaying the unique file names, users can easily distinguish between different files and avoid confusion.


Handling duplicate files when uploading them in ASP.NET MVC is an important aspect of file management. By identifying duplicate files, handling them appropriately, and displaying unique file names to users, we can ensure a and efficient file upload .

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