C# 以字符串的形式传输文件

请求
var FileString=HttpHelper.HttpApi(url, null, "post");
var FileName = "1.txt";
#region 本地存文件地址
string fullPath = Path.Combine(Directory.GetCurrentDirectory(), "File");
if (!Directory.Exists(fullPath))
{
Directory.CreateDirectory(fullPath);
}
var newfile = "File/" + FileName;
var newfullPath = Path.Combine(Directory.GetCurrentDirectory(), newfile);
if (File.Exists(Path.GetFullPath(newfu

C# 以字符串的形式传输文件最先出现在Python成神之路。