ExceptionMessageBoxSymbol 枚举

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

命名空间：  Microsoft.SqlServer.MessageBox
程序集：  Microsoft.ExceptionMessageBox（在 Microsoft.ExceptionMessageBox.dll 中）

语法

声明
Public Enumeration ExceptionMessageBoxSymbol
用法
Dim instance As ExceptionMessageBoxSymbol

public enum ExceptionMessageBoxSymbol

public enum class ExceptionMessageBoxSymbol

type ExceptionMessageBoxSymbol

public enum ExceptionMessageBoxSymbol

成员

	成员名称	说明
	Asterisk	The system asterisk symbol.
	Error	The system error symbol.
	Exclamation	The system exclamation point symbol.
	Hand	The system hand symbol.
	Information	The system information symbol.
	None	No symbol.
	Question	The system question mark symbol.
	Stop	The system stop sign symbol.
	Warning	The system warning symbol.

注释

Members of ExceptionMessageBoxSymbol are system-maintained graphic icons.

示例

         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

请参阅

参考

Microsoft.SqlServer.MessageBox 命名空间