Implement Presentation.AutoSaveOn property in PowerPointApi (#444)

Backports the new `Presentation.AutoSaveOn` property from PR #439 to release v1.9.8 branch

Author: jozefizso

Source/NetOffice.Tests/NetOffice.Tests.csproj

@@ -42,4 +42,12 @@
     <EmbeddedResource Include="Data\SampleImage.png" />
     <EmbeddedResource Include="Data\SampleText.txt" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="PowerPointApi\Docs\" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Update="PowerPointApi\Docs\AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff.pptx">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
 </Project>

Source/NetOffice.Tests/PowerPointApi/Docs/AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff.pptx

@@ -0,0 +1,76 @@
+using System;
+using NUnit.Framework;
+using NetOffice.PowerPointApi;
+using System.IO;
+
+namespace NetOffice.Tests.PowerPointApi
+{
+    [TestFixture]
+    [Category("IntegrationTests")]
+    [Category("IntegrationTests_PowerPoint")]
+    public class PresentationTests
+    {
+        public Application PowerPointApp { get; set; }
+        public Documents Docs { get; set; }
+
+        [SetUp]
+        public void SetUp()
+        {
+            this.PowerPointApp = new Application();
+            this.Docs = new Documents(TestContext.CurrentContext);
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            this.PowerPointApp?.Quit();
+            this.PowerPointApp?.Dispose();
+        }
+
+        [Test]
+        public void AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff_ReturnsFalse()
+        {
+            // Arrange
+            var presentation = PowerPointApp.Presentations.Open(this.Docs.AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff, false);
+
+            // Act
+            var actualValue = presentation.AutoSaveOn;
+
+            // Assert
+            Assert.IsFalse(actualValue);
+
+            // Cleanup
+            presentation.Close();
+        }
+
+        [Test]
+        public void AutoSaveOn_PresentationSavedInOneDrive_FeatureAutoSaveIsOn_ReturnsTrue()
+        {
+            // Arrange
+            var presentation = PowerPointApp.Presentations.Open(this.Docs.AutoSaveOn_PresentationSavedInOneDrive_FeatureAutoSaveIsOn, false);
+
+            // Act
+            var actualValue = presentation.AutoSaveOn;
+
+            // Assert
+            Assert.IsTrue(actualValue);
+
+            // Cleanup
+            presentation.Close();
+        }
+
+        public class Documents
+        {
+            public string AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff {  get; set; }
+            public string AutoSaveOn_PresentationSavedInOneDrive_FeatureAutoSaveIsOn { get; set; }
+
+            public Documents(TestContext context)
+            {
+                this.AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff = Path.Combine(context.TestDirectory, @"PowerPointApi\Docs", "AutoSaveOn_PresentationSavedLocally_FeatureAutoSaveIsOff.pptx");
+
+                // Public link: https://1drv.ms/p/c/8cd14a64b99957bc/EVX1bUNmBtxDvfvg-aNQjKkBX35RJ3BJ6_2ey2Ox5gnIfA?e=DVyExX
+                this.AutoSaveOn_PresentationSavedInOneDrive_FeatureAutoSaveIsOn = @"https://d.docs.live.net/8CD14A64B99957BC/Developer/NetOfficeFw/PowerPoint/AutoSaveOn_PresentationSavedInOneDrive_FeatureAutoSaveIsOn.pptx";
+            }
+        }
+    }
+}

Source/NetOffice.Tests/PowerPointApi/PresentationTests.cs

@@ -1272,6 +1272,28 @@ public NetOffice.PowerPointApi.Guides Guides
 				return Factory.ExecuteKnownReferencePropertyGet<NetOffice.PowerPointApi.Guides>(this, "Guides", NetOffice.PowerPointApi.Guides.LateBindingApiWrapperType);
 			}
 		}
+		
+		/// <summary>
+		/// True if the edits in the Presentation are automatically saved. Read/write Boolean.
+		/// 
+		/// SupportByVersion PowerPoint 16
+		/// Get/Set
+		/// </summary>
+		/// <remarks> Docs: <see href="https://learn.microsoft.com/en-us/office/vba/api/powerpoint.presentation.autosaveon"/> </remarks>
+		[SupportByVersion("PowerPoint", 16)]
+		public bool AutoSaveOn
+		{
+			get
+			{
+				return Factory.ExecuteBoolPropertyGet(this, "AutoSaveOn");
+			}
+			set
+			{
+				Factory.ExecuteValuePropertySet(this, "AutoSaveOn", value);
+			}
+		}
+
+
 
 		#endregion