在 C# 上的演示文稿中添加日期（打开 XML SDK）

Question

通过下面的代码隐藏，我在现有的 PowerPoint 中添加了日期。

此代码有效，在第一张幻灯片中添加了日期，但可以自定义页面上插入此日期的位置吗？字体和大小 ?

这是当前输出：

提前感谢您的帮助。

string fileName = @"C:\inetpub\wwwroot\aspnet\Template\01_FOCUS.pptx";

using (PresentationDocument oPDoc = PresentationDocument.Open(fileName, true))
{
            PresentationPart oPPart = oPDoc.PresentationPart;
            SlideIdList slideIdList = oPPart.Presentation.SlideIdList;
            SlidePart sp = slideIdList.ChildElements
           .Cast<SlideId>()
           .Select(x => oPPart.GetPartById(x.RelationshipId))
           .Cast<SlidePart>().First();
            AddDateToSlidePart(sp);
}

public static void AddDateToSlidePart(SlidePart slidePart1)
{
    Slide slide1 = slidePart1.Slide;
    CommonSlideData commonSlideData1 = slide1.GetFirstChild<CommonSlideData>();
    ShapeTree shapeTree1 = commonSlideData1.GetFirstChild<ShapeTree>();

    DocumentFormat.OpenXml.Presentation.Shape shape1 =
        new DocumentFormat.OpenXml.Presentation.Shape();

    DocumentFormat.OpenXml.Presentation.NonVisualShapeProperties nonVisualShapeProperties1 =
        new DocumentFormat.OpenXml.Presentation.NonVisualShapeProperties();

    DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties nonVisualDrawingProperties1 =
        new DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties() { Id = (UInt32Value)4U, Name = "Date Placeholder 3" };

    DocumentFormat.OpenXml.Presentation.NonVisualShapeDrawingProperties nonVisualShapeDrawingProperties1 =
        new DocumentFormat.OpenXml.Presentation.NonVisualShapeDrawingProperties();

    DocumentFormat.OpenXml.Drawing.ShapeLocks shapeLocks1 =
        new DocumentFormat.OpenXml.Drawing.ShapeLocks() { NoGrouping = true };

    nonVisualShapeDrawingProperties1.Append(shapeLocks1);

    ApplicationNonVisualDrawingProperties applicationNonVisualDrawingProperties1 =
        new ApplicationNonVisualDrawingProperties();

    PlaceholderShape placeholderShape1 =
        new PlaceholderShape() { Type = PlaceholderValues.DateAndTime, Size = PlaceholderSizeValues.Half, Index = (UInt32Value)10U };

    applicationNonVisualDrawingProperties1.Append(placeholderShape1);
    nonVisualShapeProperties1.Append(nonVisualDrawingProperties1);
    nonVisualShapeProperties1.Append(nonVisualShapeDrawingProperties1);
    nonVisualShapeProperties1.Append(applicationNonVisualDrawingProperties1);

    DocumentFormat.OpenXml.Presentation.ShapeProperties shapeProperties1 =
        new DocumentFormat.OpenXml.Presentation.ShapeProperties();

    DocumentFormat.OpenXml.Presentation.TextBody textBody1 =
        new DocumentFormat.OpenXml.Presentation.TextBody();

    DocumentFormat.OpenXml.Drawing.BodyProperties bodyProperties1 =
        new DocumentFormat.OpenXml.Drawing.BodyProperties();

    DocumentFormat.OpenXml.Drawing.ListStyle listStyle1 =
        new DocumentFormat.OpenXml.Drawing.ListStyle();

    DocumentFormat.OpenXml.Drawing.Paragraph paragraph1 =
        new DocumentFormat.OpenXml.Drawing.Paragraph();

    DocumentFormat.OpenXml.Drawing.Field field1 =
        new DocumentFormat.OpenXml.Drawing.Field() { Id = "{528B97E8-8E4B-4D32-BA17-4F287283DFD6}", Type = "datetime1" };

    DocumentFormat.OpenXml.Drawing.RunProperties runProperties1 =
        new DocumentFormat.OpenXml.Drawing.RunProperties() { Language = "it-IT" };

    DocumentFormat.OpenXml.Drawing.Text text1 =
        new DocumentFormat.OpenXml.Drawing.Text();

    text1.Text = DateTime.Now.ToString("dd/mm/yyyy");

    field1.Append(runProperties1);
    field1.Append(text1);

    DocumentFormat.OpenXml.Drawing.EndParagraphRunProperties endParagraphRunProperties1 =
        new DocumentFormat.OpenXml.Drawing.EndParagraphRunProperties() { Language = "it-IT" };

    paragraph1.Append(field1);
    paragraph1.Append(endParagraphRunProperties1);
    textBody1.Append(bodyProperties1);
    textBody1.Append(listStyle1);
    textBody1.Append(paragraph1);
    shape1.Append(nonVisualShapeProperties1);
    shape1.Append(shapeProperties1);
    shape1.Append(textBody1);
    shapeTree1.Append(shape1);
}

Answer 1

OpenXML SDK 生产力工具（可从 Microsoft 站点下载）是您的好帮手。当我需要做这样的事情时，我：

创建我想要的文档
在适当的工具（本例中为 PowerPoint）中打开它。
进行微小的更改（对文档 "dirty" 并使 PowerPoint 认为它需要更改）。
保存结果
对我想查看的文档进行更改，并用新名称保存结果
打开 OpenXML 生产力工具并单击 "Compare Files" 工具。

我强制保存（在步骤 3/4 中）的原因是 PowerPoint 可以将其所有的 PowerPoint 特性添加到我创建的文档中。第二次保存（第 5 步）必然包含所有这些，所以我希望两个文档尽可能接近 - 只有 "changes to the document that I want to see" 是两个文档之间的差异。

此时，您应该看到解决问题的途径。使用 OOXML 时，该工具必不可少。

在 C# 上的演示文稿中添加日期（打开 XML SDK）

Add date on Presentations (Open XML SDK) on C#

c#

powerpoint

openxml