...

Presentation/HushianWebApp/Pages/FromUserSide/UserCP.razor

@@ -79,7 +79,9 @@
                                         <div class="chat-bubble @(msg.Type!=Common.Enums.ConversationType.UE ? "chat-mine": "chat-other")" data-id="@msg.ID">
                                             @if (msg.FileContent != null && msg.FileContent.Length > 0 && !string.IsNullOrWhiteSpace(msg.FileType) && msg.FileType.StartsWith("image/"))
                                             {
-                                                <img src="@($"data:{msg.FileType};base64,{Convert.ToBase64String(msg.FileContent)}")" alt="image" style="max-width: 220px; border-radius: 8px; display: block;" />
+                                                <a href="@GetImageDataUrl(msg.FileType, msg.FileContent)" download="@GetDownloadFileName(msg.FileName, msg.FileType)" title="دانلود تصویر" style="display:inline-block">
+                                                    <img src="@GetImageDataUrl(msg.FileType, msg.FileContent)" alt="image" style="max-width: 220px; border-radius: 8px; display: block; cursor: pointer;" />
+                                                </a>
                                                 @if (!string.IsNullOrWhiteSpace(msg.text))
                                                 {
                                                     <div style="margin-top:6px">@msg.text</div>
@@ -507,6 +509,22 @@
         SelectedImagePreview = null;
         return Task.CompletedTask;
     }
+
+    private static string GetImageDataUrl(string? fileType, byte[]? content)
+        => (string.IsNullOrWhiteSpace(fileType) || content == null || content.Length == 0)
+            ? string.Empty
+            : $"data:{fileType};base64,{Convert.ToBase64String(content)}";
+
+    private static string GetDownloadFileName(string? fileName, string? fileType)
+    {
+        if (!string.IsNullOrWhiteSpace(fileName)) return fileName;
+        var ext = "";
+        if (!string.IsNullOrWhiteSpace(fileType) && fileType.StartsWith("image/"))
+        {
+            ext = "." + fileType.Split('/').Last();
+        }
+        return $"image_{DateTimeOffset.Now.ToUnixTimeSeconds()}{ext}";
+    }
 }
 <style>
     .chat-bubble {