Im using the answer in this question Test to see if an image exists in C# to find out if images exists.
但 我的错误是例外: 遥远的服务器退回了一个错误:(401)未经许可。
图像出现在我们共享的内联网上,因此,如何检验是否存在图像?
增 编
request.Credentials = new NetworkCredential (username, Password);
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