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.NET Framework 4.5
.NET Framework Class Library
System.Windows Namespaces
System.Windows.Forms
MessageBox Class
MessageBox Methods
Show Method
Show Method (String)
Show Method (IWin32Window, String)
Show Method (String, String)
Show Method (IWin32Window, String, String)
Show Method (String, String, MessageBoxButtons)
Show Method (IWin32Window, String, String, MessageBoxButtons)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, Boolean)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, String)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, HelpNavigator)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, String)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, HelpNavigator)
Show Method (String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, HelpNavigator, Object)
Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon, MessageBoxDefaultButton, MessageBoxOptions, String, HelpNavigator, Object)
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MessageBox.Show Method (String)

.NET Framework 4.5

Displays a message box with specified text.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
C#
C++
F#
VB
Copy 
public static DialogResult Show(
	string text
)

Parameters

text
Type: System.String

The text to display in the message box.

Return Value

Type: System.Windows.Forms.DialogResult
One of the DialogResult values.

By default, the message box displays an OK button. The message box does not contain a caption in the title.

The following code example displays a simple message box.

C#
VB
Copy 
        private void DisplayMessageBoxText()
        {
                 MessageBox.Show("Hello, world.");
        }

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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