Spire.Presentation支持给PowerPoint表格设置对齐方式，本文将介绍如何将一个PowerPoint表格对齐到幻灯片的底部。

原始表格：

using Spire.Presentation;

namespace AlignTableinPPT
{
    class Program
    {
        static void Main(string[] args)
        {
            //加载PowerPoint文档
            Presentation ppt = new Presentation();
            ppt.LoadFromFile("Table.pptx");
            ITable table = null;
            //遍历第一张幻灯片上的所有形状
            foreach (IShape shape in ppt.Slides[0].Shapes)
            {
                //找到表格并将它对齐到该幻灯片的底部
                if (shape is ITable)
                {
                    table = (ITable)shape;
                    table.SetShapeAlignment(Spire.Presentation.ShapeAlignment.AlignBottom);
                }
            }

            //保存结果文档
            ppt.SaveToFile("Result.pptx", FileFormat.Pptx2013);
        }
    }
}

Imports Spire.Presentation

Namespace AlignTableinPPT
	Class Program
		Private Shared Sub Main(args As String())
			'加载PowerPoint文档
			Dim ppt As New Presentation()
			ppt.LoadFromFile("Table.pptx")
			Dim table As ITable = Nothing
			'遍历第一张幻灯片上的所有形状
			For Each shape As IShape In ppt.Slides(0).Shapes
				'找到表格并将它对齐到该幻灯片的底部
				If TypeOf shape Is ITable Then
					table = DirectCast(shape, ITable)
					table.SetShapeAlignment(Spire.Presentation.ShapeAlignment.AlignBottom)
				End If
			Next

			'保存结果文档
			ppt.SaveToFile("Result.pptx", FileFormat.Pptx2013)
		End Sub
	End Class
End Namespace

输出：