將投影片加入簡報
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OpenXML 簡報
在以下功能中，預設會向簡報新增一張投影片。此處我們在索引 2 位置加入新投影片，並在其中加入一些文字。
string FilePath = @"..\..\..\..\Sample Files\";
string FileName = FilePath + "Adding Slide to Presentation.pptx";
InsertNewSlide(FileName, 1, "My new slide");
// Insert a slide into the specified presentation.
public static void InsertNewSlide(string presentationFile, int position, string slideTitle)
{
// Open the source document as read/write.
using (PresentationDocument presentationDocument = PresentationDocument.Open(presentationFile, true))
{
// Pass the source document and the position and title of the slide to be inserted to the next method.
InsertNewSlide(presentationDocument, position, slideTitle);
}
}
// Insert the specified slide into the presentation at the specified position.
public static void InsertNewSlide(PresentationDocument presentationDocument, int position, string slideTitle)
{
if (presentationDocument == null)
{
throw new ArgumentNullException("presentationDocument");
}
if (slideTitle == null)
{
throw new ArgumentNullException("slideTitle");
}
PresentationPart presentationPart = presentationDocument.PresentationPart;
// Verify that the presentation is not empty.
if (presentationPart == null)
{
throw new InvalidOperationException("The presentation document is empty.");
}
// Declare and instantiate a new slide.
Slide slide = new Slide(new CommonSlideData(new ShapeTree()));
uint drawingObjectId = 1;
// Construct the slide content.
// Specify the non-visual properties of the new slide.
NonVisualGroupShapeProperties nonVisualProperties = slide.CommonSlideData.ShapeTree.AppendChild(new NonVisualGroupShapeProperties());
nonVisualProperties.NonVisualDrawingProperties = new NonVisualDrawingProperties() { Id = 1, Name = "" };
nonVisualProperties.NonVisualGroupShapeDrawingProperties = new NonVisualGroupShapeDrawingProperties();
nonVisualProperties.ApplicationNonVisualDrawingProperties = new ApplicationNonVisualDrawingProperties();
// Specify the group shape properties of the new slide.
slide.CommonSlideData.ShapeTree.AppendChild(new GroupShapeProperties());
// Declare and instantiate the title shape of the new slide.
Shape titleShape = slide.CommonSlideData.ShapeTree.AppendChild(new Shape());
drawingObjectId++;
// Specify the required shape properties for the title shape.
titleShape.NonVisualShapeProperties = new NonVisualShapeProperties
(new NonVisualDrawingProperties() { Id = drawingObjectId, Name = "Title" },
new NonVisualShapeDrawingProperties(new Drawing.ShapeLocks() { NoGrouping = true }),
new ApplicationNonVisualDrawingProperties(new PlaceholderShape() { Type = PlaceholderValues.Title }));
titleShape.ShapeProperties = new ShapeProperties();
// Specify the text of the title shape.
titleShape.TextBody = new TextBody(new Drawing.BodyProperties(),
new Drawing.ListStyle(),
new Drawing.Paragraph(new Drawing.Run(new Drawing.Text() { Text = slideTitle })));
// Declare and instantiate the body shape of the new slide.
Shape bodyShape = slide.CommonSlideData.ShapeTree.AppendChild(new Shape());
drawingObjectId++;
// Specify the required shape properties for the body shape.
bodyShape.NonVisualShapeProperties = new NonVisualShapeProperties(new NonVisualDrawingProperties() { Id = drawingObjectId, Name = "Content Placeholder" },
new NonVisualShapeDrawingProperties(new Drawing.ShapeLocks() { NoGrouping = true }),
new ApplicationNonVisualDrawingProperties(new PlaceholderShape() { Index = 1 }));
bodyShape.ShapeProperties = new ShapeProperties();
// Specify the text of the body shape.
bodyShape.TextBody = new TextBody(new Drawing.BodyProperties(),
new Drawing.ListStyle(),
new Drawing.Paragraph());
// Create the slide part for the new slide.
SlidePart slidePart = presentationPart.AddNewPart<SlidePart>();
// Save the new slide part.
slide.Save(slidePart);
// Modify the slide ID list in the presentation part.
// The slide ID list should not be null.
SlideIdList slideIdList = presentationPart.Presentation.SlideIdList;
// Find the highest slide ID in the current list.
uint maxSlideId = 1;
SlideId prevSlideId = null;
foreach (SlideId slideId in slideIdList.ChildElements)
{
if (slideId.Id > maxSlideId)
{
maxSlideId = slideId.Id;
}
position--;
if (position == 0)
{
prevSlideId = slideId;
}
}
maxSlideId++;
// Get the ID of the previous slide.
SlidePart lastSlidePart;
if (prevSlideId != null)
{
lastSlidePart = (SlidePart)presentationPart.GetPartById(prevSlideId.RelationshipId);
}
else
{
lastSlidePart = (SlidePart)presentationPart.GetPartById(((SlideId)(slideIdList.ChildElements[0])).RelationshipId);
}
// Use the same slide layout as that of the previous slide.
if (null != lastSlidePart.SlideLayoutPart)
{
slidePart.AddPart(lastSlidePart.SlideLayoutPart);
}
// Insert the new slide into the slide list after the previous slide.
SlideId newSlideId = slideIdList.InsertAfter(new SlideId(), prevSlideId);
newSlideId.Id = maxSlideId;
newSlideId.RelationshipId = presentationPart.GetIdOfPart(slidePart);
// Save the modified presentation.
presentationPart.Presentation.Save();
}
}
Aspose.Slides
每個 PowerPoint 簡報檔案包含一個 Main Master slide 和其他 Normal slides。這表示簡報檔案至少包含一張或多張投影片。需要注意的是，不含投影片的簡報檔案不受 Aspose.Slides for .NET 支援。每張投影片都有特定的位置以及 unique Id。slide Id 的範圍對於母片投影片為 0 到 255，對於一般投影片則為 256 到 65535。
Aspose.Slides for .NET 允許開發人員使用 Presentation 物件所提供的 AddEmptySlide 方法向簡報加入空白投影片。若要在簡報中加入空白投影片，請遵循以下步驟：
- 建立 Presentation 類別的實例
- 呼叫 Presentation 物件所提供的 AddEmptySlide 方法
- 對新加入的空白投影片執行一些操作
- 再加入一張投影片並在其上插入文字。
- 最後，使用 Presentation 物件所提供的 Write 方法寫入 PPT 檔案
string FileName = FilePath + "Adding Slide to Presentation.pptx";
//實例化 PresentationEx 類別以表示 PPT 檔案
Presentation pres = new Presentation();
//建立簡報時會預設加入空白投影片，
//使用預設建構函式
//將空白投影片加入簡報，並取得該投影片的參考
//該空白投影片
ISlide slide = pres.Slides.AddEmptySlide(pres.LayoutSlides[0]);
//將輸出寫入磁碟
pres.Save(FileName,Aspose.Slides.Export.SaveFormat.Pptx);