Add RemoveQuotes method.

framework/src/Volo.Abp.Http.Client/Volo/Abp/Http/Client/DynamicProxying/DynamicHttpProxyInterceptor.cs

@@ -10,6 +10,7 @@ using System.Threading.Tasks;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
 using Microsoft.Extensions.Options;
+using Microsoft.Extensions.Primitives;
 using Volo.Abp.Content;
 using Volo.Abp.DependencyInjection;
 using Volo.Abp.DynamicProxy;
@@ -115,8 +116,8 @@ namespace Volo.Abp.Http.Client.DynamicProxying
                 return (T)(object)new RemoteStreamContent(await responseContent.ReadAsStreamAsync())
                 {
                     ContentType = responseContent.Headers.ContentType?.ToString(),
-                    FileName = responseContent.Headers?.ContentDisposition?.FileNameStar ?? 
-                               responseContent.Headers?.ContentDisposition?.FileName?.RemovePreFix("\"")?.RemovePostFix("\"")
+                    FileName = responseContent.Headers?.ContentDisposition?.FileNameStar ??
+                               RemoveQuotes(responseContent.Headers?.ContentDisposition?.FileName).ToString()
                 };
             }
 
@@ -295,6 +296,16 @@ namespace Volo.Abp.Http.Client.DynamicProxying
             };
         }
 
+        protected virtual StringSegment RemoveQuotes(StringSegment input)
+        {
+            if (!StringSegment.IsNullOrEmpty(input) && input.Length >= 2 && input[0] == '"' && input[input.Length - 1] == '"')
+            {
+                input = input.Subsegment(1, input.Length - 2);
+            }
+
+            return input;
+        }
+
         protected virtual CancellationToken GetCancellationToken()
         {
             return CancellationTokenProvider.Token;