c#如何在power point幻灯片中添加多个对象

using PowerPoint = Microsoft.Office.Interop.PowerPoint;

PowerPoint.Application pptApp = new PowerPoint.Application();
PowerPoint.Presentation pptPresentation = pptApp.Presentations.Open("your_presentation.pptx");

PowerPoint.Slide pptSlide = pptPresentation.Slides[1]; // 获取第一张幻灯片

// 添加文本框
PowerPoint.TextRange pptTextRange = pptSlide.Shapes.AddTextbox(
    PowerPoint.MsoTextOrientation.msoTextOrientationHorizontal, 100, 100, 200, 50).TextFrame.TextRange;
pptTextRange.Text = "Hello, World!";

// 添加形状
PowerPoint.Shape pptShape = pptSlide.Shapes.AddShape(
    PowerPoint.MsoAutoShapeType.msoShapeRectangle, 300, 300, 100, 100);
pptShape.Fill.ForeColor.RGB = (int)PowerPoint.PpColor.rgbRed;

// 添加图片
PowerPoint.Shape pptPicture = pptSlide.Shapes.AddPicture(
    "your_image.jpg", PowerPoint.MsoTriState.msoFalse, PowerPoint.MsoTriState.msoTrue, 500, 500, 200, 200);

pptPresentation.SaveAs("new_presentation.pptx");
pptPresentation.Close();
pptApp.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(pptPresentation);
System.Runtime.InteropServices.Marshal.ReleaseComObject(pptApp);