OpenXML中如何将Shape内的文本居中对齐？

你的代码未配置文本对齐规则，要实现Shape内文本居中，需处理段落水平对齐和文本框垂直对齐（按需选择），以下是修改后的完整代码：

private void AddTextAndSetCenter(String file)
{
    using (var presentation = PresentationDocument.Open(file, true))
    {
        var tree = presentation
            .PresentationPart
            .SlideParts
            .ElementAt(0)
            .Slide
            .Descendants<DocumentFormat.OpenXml.Presentation.ShapeTree>()
            .First();

        var shape = new DocumentFormat.OpenXml.Presentation.Shape();

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

        shape.NonVisualShapeProperties.Append(new DocumentFormat.OpenXml.Presentation.NonVisualDrawingProperties
        {
            Name = "My Shape",
            Id = (UInt32)tree.ChildElements.Count - 1
        });

        shape.NonVisualShapeProperties.Append(new DocumentFormat.OpenXml.Presentation.NonVisualShapeDrawingProperties());

        shape.NonVisualShapeProperties.Append(new DocumentFormat.OpenXml.Presentation.ApplicationNonVisualDrawingProperties());

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

        shape.ShapeProperties.Transform2D = new DocumentFormat.OpenXml.Drawing.Transform2D();

        shape.ShapeProperties.Transform2D.Append(new DocumentFormat.OpenXml.Drawing.Offset
        {
            X = 10000000,
            Y = 2000000,
        });

        shape.ShapeProperties.Transform2D.Append(new DocumentFormat.OpenXml.Drawing.Extents
        {
            Cx = 1000000,
            Cy = 1000000,
        });

        shape.ShapeProperties.Append(new PresetGeometry
        {
            Preset = ShapeTypeValues.Rectangle
        });

        var outline = new A.Outline(new A.SolidFill(new A.RgbColorModelHex { Val = "000000" }));

        outline.Width = (5 * 12700);

        shape.ShapeProperties.Append(outline);

        // 1. 设置文本框垂直居中（可选，按需开启）
        var bodyProperties = new A.BodyProperties
        {
            Vertical = TextVerticalValues.Center
        };

        // 2. 设置段落水平居中
        var paragraphProperties = new A.ParagraphProperties
        {
            Alignment = TextAlignmentTypeValues.Center
        };

        // 创建带对齐配置的TextBody和Paragraph
        shape.TextBody = new TextBody(
            bodyProperties,
            new A.ListStyle(),
            new A.Paragraph(
                paragraphProperties,
                new A.Run(new A.Text("Hello"))
            )
        );

        tree.AppendChild(shape);
    }
}

关键修改说明： #

• 段落水平居中：通过A.ParagraphProperties的Alignment属性设置为TextAlignmentTypeValues.Center，控制文本在段落内的水平方向居中。
• 文本框垂直居中：通过A.BodyProperties的Vertical属性设置为TextVerticalValues.Center，让文本在Shape的高度范围内上下居中，若仅需水平居中可去掉此配置。

内容的提问来源于stack exchange，提问作者Pasit Panphet