From bf0d0ffa1ddd678dba63924f75328cd7d3e4820d Mon Sep 17 00:00:00 2001
From: Copilot <223556219+Copilot@users.noreply.github.com>
Date: Tue, 14 Apr 2026 11:13:30 +0800
Subject: [PATCH] Auto-load model and run inference on WinUI app launch

Instead of requiring the user to manually select an EP and click
'Load / Reload Model', the app now automatically loads the model
with the default execution provider and runs inference on startup.
If auto-load fails (e.g. no GPU for DML), the error is shown and
the user can still manually select a different EP and retry.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 Samples/WindowsML/cs-winui/MainWindow.xaml.cs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Samples/WindowsML/cs-winui/MainWindow.xaml.cs b/Samples/WindowsML/cs-winui/MainWindow.xaml.cs
index d3abb598e..75d8b6c1b 100644
--- a/Samples/WindowsML/cs-winui/MainWindow.xaml.cs
+++ b/Samples/WindowsML/cs-winui/MainWindow.xaml.cs
@@ -78,8 +78,24 @@ private async Task InitializeAndRunDemoAsync()
                 EpCombo.SelectionChanged += EpCombo_SelectionChanged;
 
                 providerInfo.AppendLine("========================================");
-                providerInfo.AppendLine("Select an execution provider (and device if required) then click 'Load / Reload Model'.");
+                providerInfo.AppendLine("Auto-loading model with default execution provider...");
                 ResultsText.Text = providerInfo.ToString();
+
+                // Auto-load model and run inference on startup
+                try
+                {
+                    await LoadModelAsync();
+                    if (_session != null)
+                    {
+                        await LoadAndRunDemoAsync();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    ResultsText.Text = providerInfo.ToString()
+                        + $"\nAuto-load failed: {ex.Message}"
+                        + "\nSelect an execution provider and click 'Load / Reload Model' to retry.";
+                }
             }
             catch (Exception ex)
             {