Added extension methods for IFileInfo and Stream.

framework/src/Volo.Abp.Core/System/IO/AbpStreamExtensions.cs

@@ -1,4 +1,6 @@
-namespace System.IO
+using System.Threading.Tasks;
+
+namespace System.IO
 {
     public static class AbpStreamExtensions
     {
@@ -10,5 +12,14 @@
                 return memoryStream.ToArray();
             }
         }
+
+        public static async Task<byte[]> GetAllBytesAsync(this Stream stream)
+        {
+            using (var memoryStream = new MemoryStream())
+            {
+                await stream.CopyToAsync(memoryStream);
+                return memoryStream.ToArray();
+            }
+        }
     }
 }

framework/src/Volo.Abp.VirtualFileSystem/Microsoft/Extensions/FileProviders/AbpFileInfoExtensions.cs

@@ -1,6 +1,7 @@
 using JetBrains.Annotations;
 using System.IO;
 using System.Text;
+using System.Threading.Tasks;
 using Volo.Abp;
 
 namespace Microsoft.Extensions.FileProviders
@@ -30,5 +31,31 @@ namespace Microsoft.Extensions.FileProviders
                 }
             }
         }
+
+        /// <summary>
+        /// Reads file content as byte[].
+        /// </summary>
+        public static byte[] ReadBytes([NotNull] this IFileInfo fileInfo)
+        {
+            Check.NotNull(fileInfo, nameof(fileInfo));
+
+            using (var stream = fileInfo.CreateReadStream())
+            {
+                return stream.GetAllBytes();
+            }
+        }
+
+        /// <summary>
+        /// Reads file content as byte[].
+        /// </summary>
+        public static async Task<byte[]> ReadBytesAsync([NotNull] this IFileInfo fileInfo)
+        {
+            Check.NotNull(fileInfo, nameof(fileInfo));
+
+            using (var stream = fileInfo.CreateReadStream())
+            {
+                return await stream.GetAllBytesAsync();
+            }
+        }
     }
 }