Swagger 打開時自動折疊

引用：

using Swashbuckle.AspNetCore.SwaggerUI;

using Swashbuckle.AspNetCore;

修改：Startup.cs 檔案

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
     if (env.IsDevelopment())
     {
         app.UseDeveloperExceptionPage();
     }

     app.UseHttpsRedirection();

     app.UseRouting();

     app.UseAuthorization();

     app.UseEndpoints(endpoints =>
     {
         endpoints.MapControllers();
     });
     #region Swagger
     app.UseSwagger();
     app.UseSwaggerUI(c =>
     {
         c.SwaggerEndpoint("/swagger/v1/swagger.json", "ApiHelp V1");
         c.DocExpansion(DocExpansion.None); //->修改界面打開時自動折疊
     });
     #endregion

 }