netoffice添加新的slide

   网上很少关于netoffice添加slide的方法，后来用了VSTO添加的方法竟然可行，都是微软的，其实原理应该是一样的。具体代码如下：

/// PowerPoint 应用程序对象
/// </summary>
private PowerPoint.Application Application { get; set; }
/// <summary>
/// PowerPoint 文档对象
/// </summary>
public PowerPoint.Presentation Presentation { get; set; }

  //这是添加一个新的 Presentations

this.Presentation = this.Application.Presentations.Add(MsoTriState.msoTrue);
this.Presentation.Slides.Add(1, PowerPoint.PpSlideLayout.ppLayoutText);

//添加一个slide

PowerPoint.Slide slide = this.Application.ActivePresentation.Slides.Add(this.Application.ActivePresentation.Slides.Count + 1, PowerPoint.PpSlideLayout.ppLayoutBlank);

textbox = slide.Shapes.AddLabel(MsoTextOrientation.msoTextOrientationHorizontal,50, 30, 600, 20);
textbox.TextFrame.TextRange.Text ="单选题";
textbox.TextFrame.TextRange.Font.Size = 30;//设置文本字体大小
// add a line
slide.Shapes.AddLine(10, 80, 700, 80);

//slide.Shapes.AddShape(MsoAutoShapeType.msoShapeSmileyFace, 200, 200, 250, 250);
//题干部分
textbox = slide.Shapes.AddLabel(MsoTextOrientation.msoTextOrientationHorizontal,50, 100, 600, 20);
textbox.TextFrame.TextRange.Text = stem;
textbox.TextFrame.TextRange.Font.Size = 24;//设置文本字体大小

textbox = slide.Shapes.AddLabel(MsoTextOrientation.msoTextOrientationHorizontal, 50, 200, 600, 50);
textbox.TextFrame.TextRange.Text ="A.";
textbox.TextFrame.TextRange.Font.Size = 24;//设置文本字体大小
textbox = slide.Shapes.AddTextbox(MsoTextOrientation.msoTextOrientationHorizontal, 70, 200, 600, 50);//向当前PPT添加文本框
textbox.TextFrame.TextRange.Text = item1;//设置文本框的内容
textbox.TextFrame.TextRange.Font.Size = 24;//设置文本字体大小
textbox.TextFrame.TextRange.Font.Color.RGB = Color.Black.ToArgb();//设置文本颜色

slide.Select();//这个是选中当前新增的slide