Call A Multi-Part Form Method Programmatically

Question

I have the following method in my WebApi

[HttpPost]
[Route(\"foo/bar\")]
[Consumes(\"multipart/form-data\")]
[DisableRequestSizeLimit]
public async Task

        

Answer 1

Try to use HttpClient and send MultipartFormDataContent in controller

using (var client = new HttpClient())
{
    using (var content = new MultipartFormDataContent())
    {
        content.Add(new StringContent("testA"), "A");//string
        content.Add(new StringContent("testB"), "B");
        content.Add(new StringContent("testBB"), "B");//string[]
        content.Add(new StringContent("testC"), "C");
        content.Add(new StringContent("testCC"), "C");
        
        //replace with your own file path, below use an image in wwwroot for example
        string filePath = Path.Combine(_hostingEnvironment.WebRootPath + "\\Images", "myImage.PNG");

        byte[] file = System.IO.File.ReadAllBytes(filePath);
                
        var byteArrayContent = new ByteArrayContent(file);

        content.Add(byteArrayContent, "file", "myfile.PNG");
        
        var url = "https://locahhost:5001/foo/bar";
        var result = await client.PostAsync(url, content);
    }
}