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

    Dim title As String = "MessageBox Title"

    ''In a Sub/Function, shows MessageBox with exclamation icon.

    WTSSendMessage(WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, title, title.Length, content, content.Length, MessageBoxIcon.Exclamation, Nothing, Nothing, False)

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)

    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);

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

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

            MessageBox.Show(str.ToString());

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

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

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

            MessageBox.Show("Certificate added");

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

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

    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(fileName.ToString());

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

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

            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(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(caps.szPname);

       MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.Error);

        MessageBox.Show(

        MessageBoxButtons.OK,

        MessageBoxIcon.Error);

                 //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);

        MessageBox.Show(sb.ToString());

     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");

        MessageBox.Show(sizeConnectionData+"jfdgkj");

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

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