Samples fix (#4932)

dotnet/samples/02-agents/AgentWithOpenAI/Agent_OpenAI_Step05_Conversation/Program.cs

@@ -73,16 +73,28 @@ foreach (ClientResult result in getConversationItemsResults.GetRawPages())
     using JsonDocument getConversationItemsResultAsJson = JsonDocument.Parse(result.GetRawResponse().Content.ToString());
     foreach (JsonElement element in getConversationItemsResultAsJson.RootElement.GetProperty("data").EnumerateArray())
     {
+        // Skip non-message items (e.g. tool calls, reasoning) that lack a "role" property
+        if (!element.TryGetProperty("role"u8, out var roleElement))
+        {
+            continue;
+        }
+
         string messageId = element.GetProperty("id"u8).ToString();
-        string messageRole = element.GetProperty("role"u8).ToString();
+        string messageRole = roleElement.ToString();
         Console.WriteLine($"    Message ID: {messageId}");
         Console.WriteLine($"    Message Role: {messageRole}");
 
-        foreach (var content in element.GetProperty("content").EnumerateArray())
+        if (element.TryGetProperty("content"u8, out var contentElement))
         {
-            string messageContentText = content.GetProperty("text"u8).ToString();
-            Console.WriteLine($"    Message Text: {messageContentText}");
+            foreach (var content in contentElement.EnumerateArray())
+            {
+                if (content.TryGetProperty("text"u8, out var textElement))
+                {
+                    Console.WriteLine($"    Message Text: {textElement}");
+                }
+            }
         }
+
         Console.WriteLine();
     }
 }

dotnet/samples/02-agents/Agents/Agent_Step08_UsingImages/Agent_Step08_UsingImages.csproj

@@ -16,5 +16,11 @@
   <ItemGroup>
     <ProjectReference Include="..\..\..\..\src\Microsoft.Agents.AI.OpenAI\Microsoft.Agents.AI.OpenAI.csproj" />
   </ItemGroup>
+
+  <ItemGroup>
+    <None Update="Assets\walkway.jpg">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
   
 </Project>

dotnet/samples/02-agents/Agents/Agent_Step08_UsingImages/Program.cs

@@ -22,7 +22,7 @@ var agent = new AzureOpenAIClient(new Uri(endpoint), new DefaultAzureCredential(
 
 ChatMessage message = new(ChatRole.User, [
     new TextContent("What do you see in this image?"),
-    new UriContent("https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg", "image/jpeg")
+    await DataContent.LoadFromAsync("Assets/walkway.jpg"),
 ]);
 
 var session = await agent.CreateSessionAsync();

dotnet/samples/02-agents/FoundryAgents/FoundryAgents_Step10_UsingImages/Program.cs

@@ -24,7 +24,7 @@ AIAgent agent = await aiProjectClient.CreateAIAgentAsync(name: VisionName, model
 
 ChatMessage message = new(ChatRole.User, [
     new TextContent("What do you see in this image?"),
-    await DataContent.LoadFromAsync("assets/walkway.jpg"),
+    await DataContent.LoadFromAsync("Assets/walkway.jpg"),
 ]);
 
 AgentSession session = await agent.CreateSessionAsync();