[英]create a copy of template presentation “.potx” to a new “.pptx” using openXML
I have a powerpoint template with .potx extension, i need to create a copy of the template file, but the created file does not have any content present in it, it is a blank presentation, below is the function i am using to create a destination file using template file. 我有一个扩展名为.potx的powerpoint模板,我需要创建一个模板文件的副本,但创建的文件中没有任何内容,它是一个空白的演示文稿,下面是我用来创建一个目标文件使用模板文件。
/// <summary>
/// Creates a copy of the source template file
/// </summary>
/// <param name="sourceFile">sourcce file which has to be copied</param>
/// <param name="destinationFile">destination file where the new file has to be placed.</param>
public static void CreateFileFromTemplate(this string sourceFile, string destinationFile)
{
try
{
//File.Copy(sourceFile, destinationFile, true);
if (System.IO.Path.GetExtension(sourceFile) == ".potx")
{
if (System.IO.Path.GetExtension(destinationFile) == ".potx")
{
PresentationDocument destinationDoc = PresentationDocument.Create(destinationFile, PresentationDocumentType.Presentation);
PresentationPart presentationPart = destinationDoc.AddPresentationPart();
presentationPart.Presentation = new Presentation();
presentationPart.Presentation.Save();
destinationDoc.Close();
//Package destinationPackage = Package.Open(destinationFile, FileMode.Open, FileAccess.ReadWrite);
using (destinationDoc = PresentationDocument.Open(destinationFile, true))
{
Package templatePackage = Package.Open(sourceFile, FileMode.Open);
using (PresentationDocument templateDocument = PresentationDocument.Open(templatePackage))
{
PresentationPart sourcePresPart = templateDocument.PresentationPart;
PresentationPart destinationPresrPart = destinationDoc.PresentationPart;
//var templateSlideCount = templateDocument.CountSlides();
//for (int slides = 1; slides <= templateSlideCount; slides++)
//{
//}
SlidePart sourceSlidePart;
SlidePart destinationSlidePart;
foreach (SlideId slideId in sourcePresPart.Presentation.SlideIdList)
{
//int i=0;
sourceSlidePart = (SlidePart)sourcePresPart.GetPartById(slideId.RelationshipId);
destinationSlidePart = sourceSlidePart.Clone();
SlideIdList slideIdList = destinationPresrPart.Presentation.SlideIdList;
destinationPresrPart.AddPart(destinationSlidePart);
// Save the modified presentation.
destinationPresrPart.Presentation.Save();
}
}
}
}
else
{
throw new FileFormatException("Invalid destination file format, Valid file should have .pptx as extension");
}
}
else
{
throw new FileFormatException("Invalid file format, Valid file should have .potx as extension");
}
}
catch (Exception ex)
{
throw;
}
}
Extension method used to clone a slide 用于克隆幻灯片的扩展方法
/// <summary>
/// Clones the specified slide.
/// </summary>
/// <param name="sourceSlide">The slide to clone.</param>
/// <returns>Cloned slide.</returns>
public static SlidePart Clone(this SlidePart sourceSlide)
{
// find the presentationPart: makes the API more fluent
var presentationPart = sourceSlide.GetParentParts()
.OfType<PresentationPart>()
.Single();
// clone slide contents
Slide currentSlide = (Slide)sourceSlide.Slide.CloneNode(true);
var slidePartClone = presentationPart.AddNewPart<SlidePart>();
currentSlide.Save(slidePartClone);
// copy layout part
slidePartClone.AddPart(sourceSlide.SlideLayoutPart);
//copy all embedded elements
foreach (ChartPart part in sourceSlide.ChartParts)
{
ChartPart newpart = slidePartClone.AddNewPart<ChartPart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
newpart.AddNewPart<EmbeddedPackagePart>(part.EmbeddedPackagePart.ContentType, part.GetIdOfPart(part.EmbeddedPackagePart));
newpart.EmbeddedPackagePart.FeedData(part.EmbeddedPackagePart.GetStream());
}
foreach (EmbeddedObjectPart part in sourceSlide.EmbeddedObjectParts)
{
EmbeddedObjectPart newpart = slidePartClone.AddNewPart<EmbeddedObjectPart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
}
foreach (EmbeddedPackagePart part in sourceSlide.EmbeddedPackageParts)
{
EmbeddedPackagePart newpart = slidePartClone.AddNewPart<EmbeddedPackagePart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
}
foreach (ImagePart part in sourceSlide.ImageParts)
{
ImagePart newpart = slidePartClone.AddNewPart<ImagePart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
}
foreach (VmlDrawingPart part in sourceSlide.VmlDrawingParts)
{
VmlDrawingPart newpart = slidePartClone.AddNewPart<VmlDrawingPart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
}
foreach (UserDefinedTagsPart part in sourceSlide.UserDefinedTagsParts)
{
UserDefinedTagsPart newpart = slidePartClone.AddNewPart<UserDefinedTagsPart>(part.ContentType, sourceSlide.GetIdOfPart(part));
newpart.FeedData(part.GetStream());
}
return slidePartClone;
}
in my main method i have below code which calls these functions to create the ppt 在我的主要方法中,我有下面的代码调用这些函数来创建ppt
string sourceFilePath =@"C:\TempFolder\template.potx";
string destinationFilePath = @"C:\TempFolder\ClonedFile.potx";
sourceFilePath.CreateFileFromTemplate(destinationFilePath);
but the final created ppt will not have any slides in it, 但是最终创建的ppt中没有任何幻灯片,
any help would be appreciated 任何帮助,将不胜感激
I posted a similar answer before on saving an excel template to an actual excel document here and you should be able to apply the same logic with a power point template. 我对储蓄Excel模板到实际的excel文档之前张贴了类似的答案在这里 ,你应该能够与电源点模板应用相同的逻辑。 Instead of the
SpreadsheetDocument
you will want to use the PresentationDocument
and call ChangeDocumentType on it. 您将需要使用
PresentationDocument
并在其上调用ChangeDocumentType,而不是SpreadsheetDocument
。 Something along these lines: 这些方面的东西:
byte[] byteArray = File.ReadAllBytes("C:\\temp\\sa123.potx");
using (MemoryStream stream = new MemoryStream())
{
stream.Write(byteArray, 0, (int)byteArray.Length);
using (PresentationDocument presentationDoc = PresentationDocument.Open(stream, true))
{
// Change from template type to presentation type
presentationDoc.ChangeDocumentType(PresentationDocumentType.Presentation);
}
File.WriteAllBytes("C:\\temp\\sa123.pptx", stream.ToArray());
}
You can then reopen that saved file and do whatever extra stuff you want to it without touching the template file. 然后,您可以重新打开该已保存的文件,并在不触及模板文件的情况下执行您想要的任何额外操作。
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