在WinForm/C#中打开一个文件，主要是用到进程的知识。

下面是一些实例，可以模仿着去实现。

1. 打开文件

privatevoid btOpenFile_Click(object sender,EventArgs e)

{

//定义一个ProcessStartInfo实例

System.Diagnostics.ProcessStartInfo info =new System.Diagnostics.ProcessStartInfo();

//设置启动进程的初始目录

info.WorkingDirectory =Application.StartupPath;

//设置启动进程的应用程序或文档名

info.FileName = @"test.txt";

//设置启动进程的参数

info.Arguments = "";

//启动由包含进程启动信息的进程资源

try

{

System.Diagnostics.Process.Start(info);

}

catch (System.ComponentModel.Win32Exception we)

{

MessageBox.Show(this, we.Message);

return;

}

}

2.  打开浏览器

privatevoid btOpenIE_Click(object sender,EventArgs e)

{

//启动IE进程

System.Diagnostics.Process.Start("IExplore.exe");

}

3. 打开指定URL

方法一：

privatevoid btOpenURL_Click(object sender,EventArgs e)

{

//启动带参数的IE进程

System.Diagnostics.Process.Start("IExplore.exe","http://hi.baidu.com/crong21");

}

方法二：

privatevoid btOpenURLwithArgs_Click(object sender,EventArgs e)

{

//定义一个ProcessStartInfo实例

System.Diagnostics.ProcessStartInfo startInfo =newSystem.Diagnostics.ProcessStartInfo("IExplore.exe");

//设置进程参数

startInfo.Arguments = " http://hi.baidu.com/crong21";

//并且使进程界面最小化

startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Minimized;

//启动进程

System.Diagnostics.Process.Start(startInfo);

}

4. 打开文件夹

privatevoid btOpenFolder_Click(object sender,EventArgs e)

{

//获取“收藏夹”文件路径

string myFavoritesPath = System.Environment.GetFolderPath(Environment.SpecialFolder.Favorites);

//启动进程

System.Diagnostics.Process.Start(myFavoritesPath);

}

5.  打印文件

privatevoid PrintDoc()

{

//定义一个进程实例

System.Diagnostics.Process myProcess =new System.Diagnostics.Process();

try

{

//设置进程的参数

string myDocumentsPath =Environment.GetFolderPath(Environment.SpecialFolder.Personal);

myProcess.StartInfo.FileName = myDocumentsPath +"\\TxtForTest.txt";

myProcess.StartInfo.Verb ="Print";

//显示txt文件的所有谓词

foreach (string vin myProcess.StartInfo.Verbs)

MessageBox.Show(v);

       

myProcess.StartInfo.CreateNoWindow =true;

//启动进程

myProcess.Start();

}

catch (Win32Exception e)

{

if (e.NativeErrorCode == ERROR_FILE_NOT_FOUND)

{

MessageBox.Show(e.Message +" Check the path." + myProcess.StartInfo.FileName);

}

elseif (e.NativeErrorCode == ERROR_ACCESS_DENIED)

{

MessageBox.Show(e.Message +" You do not have permission to print this file.");

}

}

}