System.diagnostics.process.start vista


















ProcessStartInfo processStartInfo. Normal processStartInfo. Show ex. Message, "Error", MessageBoxButtons. OK, MessageBoxIcon. ProcessStartInfo ; processStartInfo. Whenever you use Start to start a process, you might need to close it or you risk losing system resources. Close processes using CloseMainWindow or Kill. You can check whether a process has already been closed by using its HasExited property. The following code example shows the use of this overload to start an executable file and also demonstrates the throwing of a Win32Exception when an attempt is made to start an application associated with a nonexecutable file.

Use this overload to create a new process and its primary thread by specifying its file name, user name, password, and domain. The overload is an alternative to the explicit steps of creating a new Process instance, setting the FileName , UserName , Password , and Domain properties of the StartInfo property, and calling Start for the Process instance.

The fileName or arguments parameter is null. The sum of the length of the arguments and the length of the full path to the process exceeds The following example first spawns an instance of Internet Explorer and displays the contents of the Favorites folder in the browser. It then starts some other instances of Internet Explorer and displays some specific pages or sites. Finally it starts Internet Explorer with the window being minimized while navigating to a specific site.

Use this overload to start a process resource by specifying its file name and command-line arguments. The overload associates the resource with a new Process object. The overload is an alternative to the explicit steps of creating a new Process instance, setting the FileName and Arguments members of the StartInfo property, and calling Start for the Process instance.

Starting a process by specifying its file name and arguments is similar to typing the file name and command-line arguments in the Run dialog box of the Windows Start menu. Therefore, the file name does not need to represent an executable file. It can be of any file type for which the extension has been associated with an application installed on the system. For example the file name can have a. If the fileName parameter represents a command.

Unlike the other overloads, the overload of Start that has no parameters is not a static member. Use that overload when you have already created a Process instance and specified start information including the file name , and you want to start a process resource and associate it with the existing Process instance. Use one of the static overloads when you want to create a new Process component rather than start a process for an existing component.

Both this overload and the overload that has no parameters allow you to specify the file name of the process resource to start and command-line arguments to pass.

If you have a path variable declared in your system using quotes, you must fully qualify that path when starting any process found in that location. Otherwise, the system will not find the path. NET worker process on the Web server. If you use the Start method in an ASP.

NET Web page or server control, the new process executes on the Web server with restricted permissions. The process does not start in the same context as the client browser, and does not have access to the user desktop. A note about apartment states in managed threads is necessary here. When UseShellExecute is true on the process component's StartInfo property, make sure you have set a threading model on your application by setting the attribute [STAThread] on the main method.

Otherwise, a managed thread can be in an unknown state or put in the MTA state, the latter of which conflicts with UseShellExecute being true. Some methods require that the apartment state not be unknown. If the state is not explicitly set, when the application encounters such a method, it defaults to MTA , and once set, the apartment state cannot be changed.

However, MTA causes an exception to be thrown when the operating system shell is managing the thread. No file name was specified in the Process component's StartInfo. Method not supported on operating systems without shell support such as Nano Server. NET Core only. The following example uses an instance of the Process class to start a process.

Use this overload to start a process resource and associate it with the current Process component. The return value true indicates that a new process resource was started. If the process resource specified by the FileName member of the StartInfo property is already running on the computer, no additional process resource is started.

Instead, the running process resource is reused and false is returned. You can start a ClickOnce application by specifying the location for example, a Web address from which you originally installed the application. Do not start a ClickOnce application by specifying its installed location on your hard drive. If you are using Visual Studio, this overload of the Start method is the one that you insert into your code after you drag a Process component onto the designer.

Use the Properties window to expand the StartInfo category and write the appropriate value into the FileName property. Your changes will appear in the form's InitializeComponent procedure.

Start call returns false and doesn't bind any of the process information to the Process object. At a minimum I need to know when this process exits.

Is there a way to do this using the Process object or is there some other work-around? Process ; proc. Start ; Console. InvalidOperationException: No process is associated with this object.

Start works, it just doesn't bind the process to the proc object. Monday, January 21, PM.



0コメント

  • 1000 / 1000