问题
i'm trying to invoke a webapi with the new System.Net.WebClient and didnot found any special examples.
The goal is simulate a traditional form post with some fields and a file.
how can i do it using the System.Net.WebClient or where can i find some examples?
thanks in advance
回答1:
I think you need this:
http://dzimchuk.net/post/uploading-a-file-over-http-in-net
This is a very well written blog. See the last example.
回答2:
There are a lot of examples if you do a fast google search, anyway, here goes some samples:
Simple GET
WebClient webClient = new WebClient();
webClient.Headers["Accept"] = "application/json"; //setting headers
string json = webClient.DownloadString(url);
Simple POST
NameValueCollection values = new NameValueCollection();
values["user"] = username;
values["pwd"] = password;
webClient.UploadValues(url, values);
There's also an UploadData that sends byte arrays and UploadFile that allows you to upload files directly from disk.
来源:https://stackoverflow.com/questions/24738839/post-fields-and-a-file-using-the-new-system-net-webclient