Question

我尝试使用下一个代码执行此操作：

using Microsoft.Office.Core;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using System.IO;
using Microsoft.Office.Interop.PowerPoint;

namespace SavePPT
{
        class Program
        {
            static void Main(string[] args)
            {
                Application app = new PowerPoint.Application();
                var pres = app.Presentations;
                var file = pres.Open(@"C:\Presentation1.pptx", MsoTriState.msoTrue, MsoTriState.msoTrue, MsoTriState.msoFalse);
                file.SaveCopyAs(@"C:\presentation1.wmv", PowerPoint.PpSaveAsFileType.ppSaveAsWMV, MsoTriState.msoCTrue);

                app.Quit();

            }
        }
}

但是这个解决方案创建了0 KB大小的文件，当然我无法播放它。

Answer 1

我找到解决方案：

using Microsoft.Office.Core;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using System.IO;
using Microsoft.Office.Interop.PowerPoint;

namespace SavePPT
{
        class Program
        {
            static void Main(string[] args)
            {
                string fileName = @"C:\Presentation1.pptx";
                string exportName = "video_of_presentation";
                string exportPath = @"C:\{0}.wmv";

                Microsoft.Office.Interop.PowerPoint.Application ppApp = new Microsoft.Office.Interop.PowerPoint.Application();
                ppApp.Visible = MsoTriState.msoTrue;
                ppApp.WindowState = PpWindowState.ppWindowMinimized;
                Microsoft.Office.Interop.PowerPoint.Presentations oPresSet = ppApp.Presentations;
                Microsoft.Office.Interop.PowerPoint._Presentation oPres = oPresSet.Open(fileName,
                            MsoTriState.msoFalse, MsoTriState.msoFalse,
                            MsoTriState.msoFalse);
                try
                {
                    oPres.CreateVideo(exportName);
                    oPres.SaveCopyAs(String.Format(exportPath, exportName),
                        PowerPoint.PpSaveAsFileType.ppSaveAsWMV,
                        MsoTriState.msoCTrue);
                }
                finally
                {
                    ppApp.Quit();
                }
            }
        }
}

此代码保存文件，但有一些延迟。谢谢你的帮助。

Answer 2

尝试

while (oPres.CreateVideoStatus == PpMediaTaskStatus.ppMediaTaskStatusInProgress)
{
    Thread.Sleep(100);
}

Answer 3

PowerPoint的SaveCopyAs方法似乎不支持ppSaveAsWMV。它明确说明它支持SaveCopyAs的MSDN page，它不包含ppSaveAsWMV常量。

如何使用Interop with C＃将* .ppt，* .pptx文件保存为* .wmv？

3 个答案: