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

9 votes220 views2 answers
C# check if string is all numbers
C#
1 vote212 views1 answer
Oncollisionenter is declared but never used
C#
0 vote224 views1 answer
Get directory name of path c#
C#
0 vote270 views1 answer
C# check if pdf is protected without password
C#
11 votes224 views1 answer
C# print out
C#
4 votes205 views1 answer
C# open a new form
C#
6 votes222 views3 answers
C# convert timestamp to datetime
C#
0 vote214 views1 answer
C# get executing file name
C#
6 votes226 views2 answers
C# check if a directory exists
C#
1 vote210 views1 answer
Get distinct from datatable c#
C#