使用Process.Start（）打开.msg文件

Question

ProcessStartInfo startInfo = new ProcessStartInfo();
Process first = new Process();   
startInfo.FileName = "OUTLOOK";
                    startInfo.Arguments = "http:\\blabla.com\EMAIL.msg";
                    startInfo.CreateNoWindow = true;                        
                    first.StartInfo = startInfo;
                    first.Start();

i used Process.Start to start up Outlook and open a .Msg file. how can i reuse the same process to open another .msg file without opening multiple processes/threads/instances of outlook?

i have tried something like

Process[] outlook = Process.GetProcessesByName("OUTLOOK");
Process existing = outlook[0];
                    startInfo.FileName = "outlook";
                    startInfo.Arguments = "http:\\blabla.com\2ndEMAIL.msg";
                    startInfo.CreateNoWindow = true;
                    existing.StartInfo = startInfo;
                    existing.Start();                         

to reuse the same process but i'm still opening multiple windows of outlook instead of just the .MSG file it

Answer 1

Slightly modified your code, this might work.

var first = new Process();
var pinfo = new ProcessStartInfo
            {
                FileName = "http:\\blabla.com\EMAIL.msg",
                Arguments = "/quiet",
                CreateNoWindow = true
            };
first.StartInfo = pinfo;
first.Start();

Answer 2

Only one instance of Outlook can be run at the same time.

how can i reuse the same process to open another .msg file without opening multiple processes/threads/instances of outlook?

You can use the Process.Start method to open the message in Outlook. There is no need to specify Outlook, only path to the .msg file.

Be aware, the Application class in Outlook provides you the CreateItemFromTemplate method. It creates a new Outlook item based on the specified template and returns the newly created Outlook item. You can use it to create an Outlook item based on the .MSG file. See How To: Create a new Outlook message based on a template for more information.

Answer 3

如果要关闭已打开的Outlook消息，则您有责任这样做 - 使用Application.Inspectors集合枚举Outlook当前显示的所有消息并关闭它们。

Answer 4

Just do it

var process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo
{
  FileName = fullPath //path of msg file
};
process.StartInfo = startInfo;
process.Start();