Uploading files using Angular can result in a null HttpPostedFileBase

When working with Angular in conjunction with MVC, I am facing an issue where the HttpPostedFileBase is coming up as null when attempting to upload a file.

This is how the HTML looks:

<input type="file" data-ng-model="fileName" onchange="angular.element(this).scope().fileInputChanged(this)">

Angular code snippet:

scope.fileInputChanged = function (element) {
    scope.$apply(function (scope) {
        console.log('files:', element.files);

        _.each(element.files, function (element, index, list) {
            scope.files.push(element);
        });
    });
}

// More Angular functions for uploading documents...

MVC code snippet:

public void UploadDocuments(HttpPostedFileBase file)
{

}

The request headers and payload details are provided below. How can I resolve this issue and make the file upload functionality work correctly?

Answer №1

The reason for the issue is that you have named the form data as uploadedFile, but your action expects a parameter called file. To resolve this, update the parameter name to match the form data:

public void UploadDocuments(HttpPostedFileBase uploadedFile)
{
}

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