/* The SHMessageBoxCheck() function is a Windows Shell API function that displays a custom messagebox with a "never ask me again" check box.  When the user checks the checkbox, the dialog never shows up again.  The shell API .dll exports this function by ordinal only.  The entrypoint  is ordinal 185 for ASCII and 191 for unicode. */

public static extern int SHMessageBoxCheck(

    [In] MessageBoxCheckFlags uType,

Declare Function SHMessageBoxCheck Lib "shlwapi.dll" (TODO) As TODO

/* We use the Windows Shell function SHMessageBoxCheck, so we have to define this parallel enum of the definitions in winuser.h. */

public enum MessageBoxCheckFlags : uint

Raymond Chen, a popular Microsoft blogger, recommends that you not worry about leaving keys because it's per-user data anyway and in many environments it's preferable to leave it behind. Definitely do not try to enumerate all user profiles to remove the keys for the other users because in the case of roaming profiles you'll likely corrupt a lot of stuff. If you want to remove all traces of your program, one alternative is to write your own SHMessageBoxCheck dialog and store the preference wherever you want. Source: http://blogs.msdn.com/oldnewthing/archive/2007/09/17/4948130.aspx

    result = SHMessageBoxCheck(

        MessageBoxCheckFlags.MB_OK | MessageBoxCheckFlags.MB_ICONINFORMATION,

MessageBox.Show(DateTime.FromFileTime(t).ToString());

        MessageBox(NULL, path, "GetProfilesDirectory()", MB_OK);

        MessageBox(NULL, path, "GetProfilesDirectory()", MB_OK);

MessageBox.Show(e.Name " Renamed in " e.FullPath);

MessageBox.Show(e.Name " Deleted in " e.FullPath);

MessageBox.Show(e.Name " created in " e.FullPath);

By this property if you want to check file has been removed ,deleted from physical path then this will be true and you can check like if you have a tree view and you dont want to repopulate your tree view then use filesystemwatcher and repopulate the tree only when files have been changed,delete or rename. or you can throw a messagebox like above.

    MessageBox.Show(Win32API.FindExecutable(theMenuItem.Text));

MessageBox.Show("Result: " + retval.ToString() + vbCrLf + "Selected Icon Index: " + iconindex.ToString())

using System.Windows.Forms; // MessageBox

        MessageBox.Show ( "GetDisplayName(), PIDL count > 1" );

     MessageBox.Show(ex.Message, "Error")

       MessageBox.Show(ex.Message, Me.TITLE, MessageBoxButtons.OK, MessageBoxIcon.Exclamation)

    MessageBox.Show( "Unable to format the drive" );

    MessageBox.Show(c.FileSystem.SpecialDirectories.MyDocuments);

    MessageBox.Show(String.Format("Adding the monitor failed.\n\nError: {0}", errorMessage), sErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);

    MessageBox.Show(String.Format("Adding the monitor failed:\n\nException: {0}", e.ToString()), sErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);

     MessageBox.Show(String.Format("Deleting the monitor failed.\n\nError: {0}", errorMessage), sErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);

   MessageBox.Show(String.Format("Deleting the monitor failed.\n\nException: {0}", ex.ToString()), sErrorTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);

        Messagebox.Show("Failed to create ODBC data source!!")

            MessageBox.Show(aLocalPath.Replace(theDriveName, pathname))

            MessageBox.Show("Failed with error :" & err)

        MessageBox.Show(theDriveName & " is not a network mapped path.")

        MessageBox.Show("App successfully scheduled to run")

        MessageBox.Show("Call to CeRunAppAtTime failed")

        MessageBox.Show("Supported: " + DevM2.dmDisplayOrientation.ToString());

        MessageBox.Show("Current: " + devmode.dmDisplayOrientation.ToString());

        MessageBox.Show("Could not hide Start Bar.");

        MessageBox.Show("Could not show Start Bar.");

            //    System.Windows.Forms.MessageBox.Show ("IME has be Opened");

            //    System.Windows.Forms.MessageBox.Show ("IME has be Opened");

public static extern int MessageBoxW(int hWnd, String text, String caption, uint type);

    Public Shared Function MessageBoxW(ByVal hWnd As Integer, _

System.Windows.Forms.MessageBox.Show(string message)

MessageBoxW(0, "Hello from C#", "pinvoke.net", 0);

                    MessageBox.Show("Can't play sound file. " + ex.ToString());

                MessageBox.Show("Can't play sound file. " & ex.ToString)

        MessageBox.Show("Could not hide Start Bar.");

        MessageBox.Show("Could not show Start Bar.");

    MessageBox.Show("Event " + result + " Occured");

            MessageBox.Show("Certificate added");

            MessageBox.Show("Could not add certificate");

            MessageBox.Show("Could not open certificate file");

        MessageBox.Show(sizeConnectionData+"jfdgkj");

            //MessageBox.Show(*connectionData+" value"+i);

            MessageBox.Show("A console could not be allocated, sorry!");

            MessageBox.Show("A console could not be allocated, sorry!");

     MessageBox.Show("Wait object"); // ret = 0x00000000L here

    MessageBox.Show(sRet, "Error_Message()", MessageBoxButtons.OK, MessageBoxIcon.Error)

    MessageBox.Show(value.ToString());

   { MessageBox.Show("Ошибка " + (value - 1).ToString()); }

        MessageBox.Show(new String(path, 0, result));

      MessageBox.Show(sSystemPath.Substring(0, sSystemPath.LastIndexOf("\")))

      MessageBox.Show(System.Environment.GetEnvironmentVariable("windir"))

        System.Windows.Forms.MessageBox.Show("Unable to set " & oTarget_File_Info.Name & " time stamps.", "Synchronization Error")

    MessageBox.Show("Error code: " + Marshal.GetLastWin32Error());

MessageBox.Show(Drive.VolumeLabel & " [" & Drive.Name & "]")

        MessageBox.Show(caps.szPname);

       MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.Error);

        MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.Error);

        MessageBox.Show(ex.Message, "Acquire SQL Servier List Error");

            MessageBox.Show(str.ToString());

            MessageBox(hWnd, L"Hello bn", NULL, MB_OK);

        MessageBox.Show(sb.ToString());

MessageBox.Show(fileName.ToString());

    MessageBox.Show( "An Unhanled exception has been detected in the application " + exeName + " .\r\nException information is saved in " + dumpFileName,

            "Error", MessageBoxButton.OK, MessageBoxImage.Error);

    System.Windows.Forms.MessageBox.Show ( msg);

    if (MessageBox.Show(this, "Are you sure you want to close this connection?" == DialogResult.Yes))

        MessageBox.Show(e.Message);

            MessageBox.Show("Rename Successful.");

            MessageBox.Show("Rename Failed.\r\nError: " + error.ToString());

        System.Windows.Forms.MessageBox.Show(domain);

    MessageBox.Show(String.Format("The default provider is {0}", providerName.ToString()));

    MessageBox.Show("Unable to get the default provider");

                            MessageBox.Show(

                MessageBox.Show(ex.Message);

MessageBox.Show(Mid(xstr,1,max))

        System.Windows.Forms.MessageBox.Show("+ Result:\t" + Convert.ToString(iResult));

        System.Windows.Forms.MessageBox.Show("- Result... ERROR!");

            MessageBox.Show("Gotta cancel the job", Path.GetFileName(m_fileName));

            MessageBox.Show("Gotta reschedule the job", Path.GetFileName(m_fileName));

            MessageBox.Show("Gotta retry the job NOW", Path.GetFileName(m_fileName));

            MessageBox.Show("Gotta commit the job", Path.GetFileName(m_fileName));

            MessageBox.Show("Gotta rollback the job", Path.GetFileName(m_fileName));

                Win32.MessageBox(0, "This program requires Windows NT!", szAppName, MessageBoxOptions.IconError);

   MessageBox.Show(sClassName.ToString)

     MessageBox.Show("ERROR");

     MessageBox.Show( rct.ToString() );

        MessageBox.Show(

        " ", MessageBoxButtons.OK, MessageBoxIcon.Error);

                MessageBox.Show( "Already one instance is running......." );

static extern int MessageBoxTimeout(IntPtr hwnd, String text, String title, uint type, Int16 wLanguageId, Int32 milliseconds);

private static extern uint MessageBoxTimeout(IntPtr hwnd,

<DllImport("user32.dll", EntryPoint:="MessageBoxTimeoutA", setLastError:=True, CharSet:= CharSet.Unicode)> _

Private Shared Function MessageBoxTimeOut( _

Private Declare Function MessageBoxTimeOut _

     Lib "user32.dll" Alias "MessageBoxTimeoutA" _

use MessageBoxButtons.* enumeration for type argument, cast as integer.

Returns 32000 if the messagebox timed out.

Messagebox wont time out if dwMilliseconds is 0

private static uint SetupnCallMessageBoxTimeOut(IntPtr hWnd, string itsMessage, string itsCaption, uint itsMessageBoxOptions,Int32 itsTimeOutMilliSeconds)

     return MessageBoxTimeout(hWnd , itsMessage, itsCaption,itsMessageBoxOptions,0,itsTimeOutMilliSeconds);

   private Shared Function DisplayMessageBox( _

   return MessageBoxTimeOut(hWnd, New StringBuilder(Message), New StringBuilder(Caption), MessageBoxOptions,0, TimeOutMilliSeconds)

     Public Function DisplayMessageBox( _

    ByVal MessageBoxOptions As Long, _

    DisplayMessageBox = MessageBoxTimeOut(hWnd, Message, Caption, MessageBoxOptions, 0, TimeOutMilliseconds)