C# webclient post file

private async Task<System.IO.Stream> Upload(string actionUrl, string paramString, Stream paramFileStream, byte [] paramFileBytes)
{
    HttpContent stringContent = new StringContent(paramString);
    HttpContent fileStreamContent = new StreamContent(paramFileStream);
    HttpContent bytesContent = new ByteArrayContent(paramFileBytes);
    using (var client = new HttpClient())
    using (var formData = new MultipartFormDataContent())
    {
        formData.Add(stringContent, "param1", "param1");
        formData.Add(fileStreamContent, "file1", "file1");
        formData.Add(bytesContent, "file2", "file2");
        var response = await client.PostAsync(actionUrl, formData);
        if (!response.IsSuccessStatusCode)
        {
            return null;
        }
        return await response.Content.ReadAsStreamAsync();
    }
}

Source: stackoverflow.com

Similar codes

1 vote165 views1 answer
C# generic return type in interface
C#
11 votes217 views2 answers
Dota2
C#
10 votes155 views6 answers
How to define a function in c#
C#
2 votes162 views1 answer
C# previous method
C#
0 vote162 views1 answer
Asp.net web hooks
C#
0 vote154 views1 answer
.net framework get configuration value from web.config
C#
10 votes191 views2 answers
C# string enum
C#
0 vote168 views1 answer
Xamarin c# switch on hotspot Programmatically
C#
1 vote175 views1 answer
String formatting of spacing with c#
C#
0 vote159 views1 answer
Nethereum check gas price
C#