c-sharp-upload-file-img2ipfs.cs

        var filePath = AppDomain.CurrentDomain.BaseDirectory + "oooo.jpg";

        UploadImageToIPFS(filePath);

        static void UploadImageToIPFS(string filePath)
        {
            var client = new RestClient("https://app.img2ipfs.org/api/v0/add");
            var request = new RestRequest("", Method.Post);

            //不要手動設置 Content-Type，讓 RestSharp 自動處理 multipart
            request.AddHeader("accept", "application/json, text/javascript, */*; q=0.01");
            request.AddHeader("origin", "https://cdn.ipfsscan.io");
            request.AddHeader("referer", "https://cdn.ipfsscan.io/");
            request.AddHeader("sec-fetch-mode", "cors");
            request.AddHeader("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0");

            // 使用 AddFile 讓 RestSharp 自動處理 boundary
            request.AddFile("file", filePath, "image/jpeg");

            // 發送請求
            var response = client.Execute(request);
            Console.WriteLine(response.Content); // 印出 API 回應
        }
        
        
        //Result
        /*
        
        {"Name":"oooo.jpg","Hash":"Qmb17UZj1FH4DchcJcfqAtMn4Qn2z5TLkm1dcCrT8GATGh","Size":"5009",
        "Url":"https://cdn.img2ipfs.com/ipfs/Qmb17UZj1FH4DchcJcfqAtMn4Qn2z5TLkm1dcCrT8GATGh?filename=oooo.jpg"}
        
        */