C# PowerPoint操作的基本用法

这篇文章主要介绍了C#操作PowerPoint的方法,涉及C#针对PowerPoint的打开、读取、播放等技巧,非常具有实用价值,需要的朋友可以参考下

using System;

using System.Collections.Generic;
using System.Linq;
using System.Text;
using OFFICECORE = Microsoft.Office.Core;
using POWERPOINT = Microsoft.Office.Interop.PowerPoint;
using System.Windows;
using System.Collections;
using System.Windows.Controls;

namespace PPTDraw.PPTOperate
{
/// <summary>
/// PPT文档操作实现类.
/// </summary>
public class OperatePPT
{
#region=========基本的参数信息=======
POWERPOINT.Application objApp = null;
POWERPOINT.Presentation objPresSet = null;
POWERPOINT.SlideShowWindows objSSWs;
POWERPOINT.SlideShowTransition objSST;
POWERPOINT.SlideShowSettings objSSS;
POWERPOINT.SlideRange objSldRng;

bool bAssistantOn;
double pixperPoint = 0;
double offsetx = 0;
double offsety = 0;
#endregion

#region===========操作方法==============
/// <summary>
/// 打开PPT文档并播放显示。
/// </summary>
/// <param name="filePath">PPT文件路径</param>
public void PPTOpen(string filePath)
{
//防止连续打开多个PPT程序.
if (this.objApp != null) { return; }
try
{
objApp = new POWERPOINT.Application();
//以非只读方式打开,方便操作结束后保存.
objPresSet = objApp.Presentations.Open(filePath, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse);

//Prevent Office Assistant from displaying alert messages:
bAssistantOn = objApp.Assistant.On;
objApp.Assistant.On = false;

objSSS = this.objPresSet.SlideShowSettings;
objSSS.Run();
}
catch (Exception ex)
{
this.objApp.Quit();
}
}

/// <summary>
/// 自动播放PPT文档.
/// </summary>
/// <param name="filePath">PPTy文件路径.</param>
/// <param name="playTime">翻页的时间间隔.【以秒为单位】</param>
public void PPTAuto(string filePath, int playTime)
{
//防止连续打开多个PPT程序.
if (this.objApp != null) { return; }

objApp = new POWERPOINT.Application();
objPresSet = objApp.Presentations.Open(filePath, OFFICECORE.MsoTriState.msoCTrue, OFFICECORE.MsoTriState.msoFalse, OFFICECORE.MsoTriState.msoFalse);

// 自动播放的代码（开始）
int Slides = objPresSet.Slides.Count;
int[] SlideIdx = new int[Slides];
for (int i = 0; i < Slides; i++) { SlideIdx[i] = i + 1; };
objSldRng = objPresSet.Slides.Range(SlideIdx);
objSST = objSldRng.SlideShowTransition;
//设置翻页的时间.
objSST.AdvanceOnTime = OFFICECORE.MsoTriState.msoCTrue;
objSST.AdvanceTime = playTime;
//翻页时的特效!
objSST.EntryEffect = POWERPOINT.PpEntryEffect.ppEffectCircleOut;

//Prevent Office Assistant from displaying alert messages:
bAssistantOn = objApp.Assistant.On;
objApp.Assistant.On = false;

//Run the Slide show from slides 1 thru 3.
objSSS = objPresSet.SlideShowSettings;
objSSS.StartingSlide = 1;
objSSS.EndingSlide = Slides;
objSSS.Run();

//Wait for the slide show to end.
objSSWs = objApp.SlideShowWindows;
while (objSSWs.Count >= 1) System.Threading.Thread.Sleep(playTime * 100);

this.objPresSet.Close();
this.objApp.Quit();
}

/// <summary>
/// PPT下一页。
/// </summary>
public void NextSlide()
{
if (this.objApp != null)
this.objPresSet.SlideShowWindow.View.Next();
}
/// <summary>
/// PPT上一页。
/// </summary>
public void PreviousSlide()
{
if (this.objApp != null)
this.objPresSet.SlideShowWindow.View.Previous();
}

/// <summary>
/// 对当前的PPT页面进行图片插入操作。
/// </summary>
/// <param name="alImage">图片对象信息数组</param>
/// <param name="offsetx">插入图片距离左边长度</param>
/// <param name="pixperPoint">距离比例值</param>
/// <returns>是否添加成功！</returns>
public bool InsertToSlide(List<PPTOBJ> listObj)
{
bool InsertSlide = false;
if (this.objPresSet != null)
{
this.SlideParams();
int slipeint = objPresSet.SlideShowWindow.View.CurrentShowPosition;

foreach (PPTOBJ myobj in listObj)
{
objPresSet.Slides[slipeint].Shapes.AddPicture(
myobj.Path, //图片路径
OFFICECORE.MsoTriState.msoFalse,
OFFICECORE.MsoTriState.msoTrue,
(float)((myobj.X - this.offsetx) / this.pixperPoint), //插入图片距离左边长度
(float)(myobj.Y / this.pixperPoint), //插入图片距离顶部高度
(float)(myobj.Width / this.pixperPoint), //插入图片的宽度
(float)(myobj.Height / this.pixperPoint) //插入图片的高度
);
}
InsertSlide = true;
}
return InsertSlide;
}

/// <summary>
/// 计算InkCanvas画板上的偏移参数，与PPT上显示图片的参数。
/// 用于PPT加载图片时使用
/// </summary>
private void SlideParams()
{
double slideWidth = this.objPresSet.PageSetup.SlideWidth;
double slideHeight = this.objPresSet.PageSetup.SlideHeight;
double inkCanWidth = SystemParameters.PrimaryScreenWidth;//inkCan.ActualWidth;
double inkCanHeight = SystemParameters.PrimaryScreenHeight;//inkCan.ActualHeight ;

if ((slideWidth / slideHeight) > (inkCanWidth / inkCanHeight))
{
this.pixperPoint = inkCanHeight / slideHeight;
this.offsetx = 0;
this.offsety = (inkCanHeight - slideHeight * this.pixperPoint) / 2;
}
else
{
this.pixperPoint = inkCanHeight / slideHeight;
this.offsety = 0;
this.offsetx = (inkCanWidth - slideWidth * this.pixperPoint) / 2;
}
}
/// <summary>
/// 关闭PPT文档。
/// </summary>
public void PPTClose()
{
//装备PPT程序。
if (this.objPresSet != null)
{
//判断是否退出程序,可以不使用。
//objSSWs = objApp.SlideShowWindows;
//if (objSSWs.Count >= 1)
//{
if (MessageBox.Show("是否保存修改的笔迹!", "提示", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
this.objPresSet.Save();
//}
//this.objPresSet.Close();
}
if (this.objApp != null)
this.objApp.Quit();

GC.Collect();
}
#endregion