MessageBox.Show( "An Unhanled exception has been detected in the application " + exeName +

    " .\r\nException information is saved in " + dumpFileName, "Error", MessageBoxButton.OK, MessageBoxImage.Error);

            MessageBox.Show(caps.szPname);

        MessageBox.Show("No MIDI Input Devices Detected");

        MessageBox.Show(caps.szPname);

       MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.Error);

        MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.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));

    MessageBox.Show(handle.ToString() ?? "error");

   MessageBox.Show(sClassName.ToString)

     MessageBox.Show("ERROR");

     MessageBox.Show( rct.ToString() );

        MessageBox.Show(

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

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

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

Private Declare Function MessageBox Lib "user32.dll" Alias "MessageBoxA" (ByVal hWnd As Long, ByVal lpText As String, ByVal lpCaption As String, ByVal uType As Long) As Long

System.Windows.Forms.MessageBox (WinForms)

System.Windows.MessageBox (WPF)

https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-messagebox

static extern int MessageBoxEx(IntPtr hWnd, string lpText, string lpCaption,

Currently works identically to the [MessageBox] API function.

[System.Windows.Forms.MessageBox.Show]

static extern int MessageBoxIndirect([In] ref MSGBOXPARAMS lpMsgBoxParams);

A complete C# wrapper class with sample code is available at http://www.codeproject.com/cs/miscctrl/MessageBoxIndirectCS.asp

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)

        MessageBox.Show("Notepad window not found")

Now you can use the font info however you want. Here's how to return a GDI+ Font corresponding to the MessageBox font selected by the user. Note that the height is always negative and always returns "world" units.

            MessageBox.Show(String.Concat(successCount.ToString, " windows tiled in ", vbCrLf, _

             ", ", inRect.Bottom.ToString), "Tiling...", MessageBoxButtons.OK, MessageBoxIcon.Information)

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

            MessageBox.Show(str.ToString());

$MessageBox = Add-Type memberDefinition $signature -name "WTSAPISendMessage" -namespace WTSAPI passThru

    Function Send-TSMessageBox

                $MessageBox = Add-Type -memberDefinition $signature -name "WTSAPISendMessage" -namespace WTSAPI -passThru  

                $MessageBox::WTSSendMessage(0, $sessionId, $title, $titleLength, $message, $messageLength, $buttonSet, $timeout, [ref] $response, $waitResponse)

MessageBox.Show(fileName.ToString());

        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");

                 //System.Windows.Forms.MessageBox.Show("Download error: \r\n"+we.Message);

                System.Windows.Forms.MessageBox.Show("Download error: \r\n"+ex.Message);

                System.Windows.Forms.MessageBox.Show("Download error: \r\n"+ex.Message);

                System.Windows.Forms.MessageBox.Show("Download error: \r\n"+ex.Message);

        MessageBox.Show("ZZZZZZ Hello, World!")

    MessageBox.Show("ZZZZZZ Hello, World!")

        MessageBox.Show(e.Message);

/// Flags that define appearance and behaviour of a standard message box displayed by a call to the MessageBox function.

public enum MessageBoxOptions : uint

''' Flags that define appearance and behaviour of a standard message box displayed by a call to the MessageBox function.

Public Enum MessageBoxOptions As UInteger

Public Enum MessageBoxOptions

/// Represents possible values returned by the MessageBox function.

public enum MessageBoxResult : uint

''' Represents possible values returned by the MessageBox function.

Public Enum MessageBoxResult As UInteger

public Enum MessageBoxResult

                        MessageBox.Show("Clicked MenuItem1");

                        MessageBox.Show("Clicked MenuItem2");

                        MessageBox.Show("Can't Close");

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

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

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

    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(sizeConnectionData+"jfdgkj");

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

    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!");

/* 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(aLocalPath.Replace(theDriveName, pathname))

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

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

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

            MessageBox.Show("Certificate added");

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

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

     MessageBox.Show("This file is a catalog");

     MessageBox.Show("This file is NOT a catalog");

         MessageBox.Show("This file is a catalog");

         MessageBox.Show("This file is not a catalog");

    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("Failed to create ODBC data source!!")

        MessageBox.Show(sb.ToString());

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

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