Presentation ppt = new Presentation();
// Add VBA project to the document
IVbaProject vbaProject = ppt.VbaProject;
vbaProject.Name = "SampleVBAMacro";
vbaProject.CodePage = 936; // Set encoding to support Chinese characters
IVbaModule vbaModule = vbaProject.Modules.Add("SampleModule", VbaModuleType.Module);
vbaModule.SourceCode = @"
Sub ExampleMacro()
' Declare variables
Dim pptPres As Object
Dim pptSlide As Object
Dim pptShape As Object
' Set reference to the current presentation
Set pptPres = ActivePresentation
' Loop through all slides
Dim i As Integer
For i = 1 To pptPres.Slides.Count
Set pptSlide = pptPres.Slides(i)
' Add a title text box to each slide (msoTextOrientationHorizontal = 1)
Set pptShape = pptSlide.Shapes.AddTextbox(1, 50, 50, 600, 50)
pptShape.TextFrame.TextRange.Text = ""Slide "" & i & "" - Auto-generated by macro""
With pptShape.TextFrame.TextRange.Font
.Bold = -1 ' msoTrue = -1
.Size = 24
.Color.RGB = RGB(0, 102, 204)
End With
Next i
' Display completion message
MsgBox ""Macro execution completed! Processed "" & pptPres.Slides.Count & "" slides."", vbInformation, ""Operation Prompt""
End Sub";
ppt.SaveToFile("result.pptm", FileFormat.Pptm);
ppt.Dispose();

// Remove module by name
Presentation ppt1 = new Presentation();
ppt1.LoadFromFile(inputFile);
IVbaModule firstModule = ppt1.VbaProject.Modules[0];
sb.AppendLine("[Remove by Name]");
sb.AppendLine("Module Name: " + firstModule.Name);
sb.AppendLine("Module Type: " + firstModule.Type);
sb.AppendLine("Module Count Before Deletion: " + ppt1.VbaProject.Modules.Count);
ppt1.VbaProject.Modules.Remove(firstModule.Name);
sb.AppendLine("Module Count After Deletion: " + ppt1.VbaProject.Modules.Count);
ppt1.SaveToFile("result1.pptm", FileFormat.Pptm);
ppt1.Dispose();
// Remove module by index
Presentation ppt2 = new Presentation();
ppt2.LoadFromFile(inputFile);
sb.AppendLine("[Remove by Index (0)]");
sb.AppendLine("Module Count Before Deletion: " + ppt2.VbaProject.Modules.Count);
ppt2.VbaProject.Modules.RemoveAt(0);
sb.AppendLine("Module Count After Deletion: " + ppt2.VbaProject.Modules.Count);
ppt2.SaveToFile("result2.pptm", FileFormat.Pptm);
ppt2.Dispose();
// Remove module by VbaModule object (cast to specific type)
Presentation ppt3 = new Presentation();
ppt3.LoadFromFile(inputFile);
IVbaModule moduleObj = ppt3.VbaProject.Modules[4];
VbaModule vbaModule = (VbaModule)moduleObj;
sb.AppendLine("[Remove by Object]");
sb.AppendLine("Module Name: " + vbaModule.Name);
sb.AppendLine("Module Type: " + vbaModule.Type);
sb.AppendLine("Module Count Before Deletion: " + ppt3.VbaProject.Modules.Count);
ppt3.VbaProject.Modules.Remove(vbaModule);
sb.AppendLine("Module Count After Deletion: " + ppt3.VbaProject.Modules.Count);
ppt3.SaveToFile("result3.pptm", FileFormat.Pptm);
ppt3.Dispose();
// Clear all modules
Presentation ppt4 = new Presentation();
ppt4.LoadFromFile(inputFile);
sb.AppendLine("[Clear All]");
sb.AppendLine("Module Count Before Deletion: " + ppt4.VbaProject.Modules.Count);
ppt4.VbaProject.Modules.Clear();
sb.AppendLine("Module Count After Deletion: " + ppt4.VbaProject.Modules.Count);
ppt4.SaveToFile("result4.pptm", FileFormat.Pptm);
ppt4.Dispose();