Статья
09/28/2010

Перечисление ExceptionMessageBoxSymbol

Specifies the symbol that is displayed in the exception message box.

Пространство имен: Microsoft.SqlServer.MessageBox
Сборка: Microsoft.ExceptionMessageBox (в Microsoft.ExceptionMessageBox.dll)

Синтаксис

'Декларация
Public Enumeration ExceptionMessageBoxSymbol
'Применение
Dim instance As ExceptionMessageBoxSymbol

public enum ExceptionMessageBoxSymbol

public enum class ExceptionMessageBoxSymbol

type ExceptionMessageBoxSymbol

public enum ExceptionMessageBoxSymbol

Элементы

	Имя элемента	Описание
	None	No symbol.
	Warning	The system warning symbol.
	Information	The system information symbol.
	Error	The system error symbol.
	Exclamation	The system exclamation point symbol.
	Asterisk	The system asterisk symbol.
	Question	The system question mark symbol.
	Hand	The system hand symbol.
	Stop	The system stop sign symbol.

Замечания

Members of ExceptionMessageBoxSymbol are system-maintained graphic icons.

Примеры

            try
            {
                // Do something that could generate an exception.
                throw new ApplicationException("An error has occured.");
            }
            catch (ApplicationException ex)
            {
                string str = "The action failed. Do you want to continue?";
                ApplicationException exTop = new ApplicationException(str, ex);
                exTop.Source = this.Text;

                // Show a message box with Yes and No buttons
                ExceptionMessageBox box = new ExceptionMessageBox(exTop,
                    ExceptionMessageBoxButtons.YesNo,
                    ExceptionMessageBoxSymbol.Question,
                    ExceptionMessageBoxDefaultButton.Button2);

                // Enable the check box.
                box.ShowCheckBox = true;

                // Define the registry key to use.
                box.CheckBoxRegistryKey =
                    Microsoft.Win32.Registry.CurrentUser.CreateSubKey(
                    @"Software\TestApp");
                box.CheckBoxRegistryValue = "DontShowActionFailedMessage";
                box.CheckBoxRegistryMeansDoNotShowDialog = true;
                box.DefaultDialogResult = DialogResult.Yes;

                // The message box won�t be displayed if the
                // "DontShowActionFailedMessage" value of the registry key 
                // contains a non-zero value.
                if (box.Show(this) == DialogResult.No)
                {
                    // Do something if the user clicks the No button.
                    this.Close();
                }
            }

Try
    ' Do something that could generate an exception.
    Throw New ApplicationException("An error has occured.")
Catch ex As ApplicationException
    Dim str As String = "The action failed. Do you want to continue?"
    Dim exTop As ApplicationException = New ApplicationException(str, ex)
    exTop.Source = Me.Text

    ' Show a message box with Yes and No buttons
    Dim box As ExceptionMessageBox = New ExceptionMessageBox(exTop, _
     ExceptionMessageBoxButtons.YesNo, _
     ExceptionMessageBoxSymbol.Question, _
     ExceptionMessageBoxDefaultButton.Button2)

    ' Enable the check box.
    box.ShowCheckBox = True

    ' Define the registry key to use.
    box.CheckBoxRegistryKey = _
    Microsoft.Win32.Registry.CurrentUser.CreateSubKey( _
     "Software\TestApp")
    box.CheckBoxRegistryValue = "DontShowActionFailedMessage"
    box.CheckBoxRegistryMeansDoNotShowDialog = True
    box.DefaultDialogResult = Windows.Forms.DialogResult.Yes

    ' The message box won�t be displayed if the
    ' "DontShowActionFailedMessage" value of the registry key 
    ' contains a non-zero value.
    If box.Show(Me) = Windows.Forms.DialogResult.No Then
        ' Do something if the user clicks the No button.
        Me.Close()
    End If
End Try

См. также

Справочник

Пространство имен Microsoft.SqlServer.MessageBox

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