Export (0) Print
Expand All
This topic has not yet been rated - Rate this topic

MessageBox.Show Method (IWin32Window, String, String, MessageBoxButtons, MessageBoxIcon)

.NET Framework 1.1

Displays a message box in front of the specified object and with the specified text, caption, buttons, and icon.

[Visual Basic]
Overloads Public Shared Function Show( _
   ByVal owner As IWin32Window, _
   ByVal text As String, _
   ByVal caption As String, _
   ByVal buttons As MessageBoxButtons, _
   ByVal icon As MessageBoxIcon _
) As DialogResult
[C#]
public static DialogResult Show(
 IWin32Window owner,
 string text,
 string caption,
 MessageBoxButtons buttons,
 MessageBoxIcon icon
);
[C++]
public: static DialogResult Show(
 IWin32Window* owner,
 String* text,
 String* caption,
 MessageBoxButtons buttons,
 MessageBoxIcon icon
);
[JScript]
public static function Show(
   owner : IWin32Window,
 text : String,
 caption : String,
 buttons : MessageBoxButtons,
 icon : MessageBoxIcon
) : DialogResult;

Parameters

owner
The IWin32Window the message box will display in front of.
text
The text to display in the message box.
caption
The text to display in the title bar of the message box.
buttons
One of the MessageBoxButtons values that specifies which buttons to display in the message box.
icon
One of the MessageBoxIcon values that specifies which icon to display in the message box.

Return Value

One of the DialogResult values.

Exceptions

Exception Type Condition
InvalidEnumArgumentException buttons is not a member of MessageBoxButtons.

-or-

icon is not a member of MessageBoxIcon.

InvalidOperationException An attempt was made to display the MessageBox in a process that is not running in User Interactive mode. This is specified by the SystemInformation.UserInteractive property.

Remarks

You can use the owner parameter to specify a particular object, Which implements the IWin32Window interface, to place the message box in front of. A message box is a modal dialog, which means no input (keyboard or mouse click) can occur except to objects on the modal form. The program must hide or close a modal form (typically in response to some user action) before input to another form can occur.

You can have a maximum of three buttons on the message box.

Example

[Visual Basic] 
Private Sub ValidateUserEntry4()

    ' Checks the value of the text.

    If ServerName.Text.Length = 0 Then

        ' Initializes variables to pass to the MessageBox.Show method.

        Dim Message As String = "You did not enter a server name. Cancel this operation?"
        Dim Caption As String = "No Server Name Specified"
        Dim Buttons As Integer = MessageBoxButtons.YesNo

        Dim Result As DialogResult

        'Displays a MessageBox using the Question icon and specifying the No button as the default.

        Result = MessageBox.Show(Me, Message, Caption, MessageBoxButtons.YesNo, MessageBoxIcon.Question)

        ' Gets the result of the MessageBox display.

        If Result = DialogResult.Yes Then

            ' Closes the parent form.

            Me.Close()

        End If

    End If

End Sub

[C#] 
private void validateUserEntry4()
{

    // Checks the value of the text.

    if(serverName.Text.Length == 0)
    {

        // Initializes the variables to pass to the MessageBox.Show method.

        string message = "You did not enter a server name. Cancel this operation?";
        string caption = "No Server Name Specified";
        MessageBoxButtons buttons = MessageBoxButtons.YesNo;
        DialogResult result;

        // Displays the MessageBox.

        result = MessageBox.Show(this, message, caption, buttons,
            MessageBoxIcon.Question);

        if(result == DialogResult.Yes)
        {

            // Closes the parent form.

            this.Close();

        }

    }

}

[C++] 
private:
    void validateUserEntry4() {
        // Checks the value of the text.
        if (serverName->Text->Length == 0) {

            // Initializes the variables to pass to the MessageBox::Show method.
            String* message = S"You did not enter a server name. Cancel this operation?";
            String* caption = S"No Server Name Specified";
            MessageBoxButtons buttons = MessageBoxButtons::YesNo;
            System::Windows::Forms::DialogResult result;

            // Displays the MessageBox.
            result = MessageBox::Show(this, message, caption, buttons,
                MessageBoxIcon::Question);

            if (result == DialogResult::Yes) {
                // Closes the parent form.
                this->Close();
            }
        }
    }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

.NET Framework Security: 

See Also

MessageBox Class | MessageBox Members | System.Windows.Forms Namespace | MessageBox.Show Overload List | MessageBoxButtons | MessageBoxIcon

Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft. All rights reserved.