MessageBoxButtons 枚举

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

指定若干常数，用以定义 MessageBox 上将显示哪些按钮

public enum class MessageBoxButtons

public enum MessageBoxButtons

type MessageBoxButtons = 

Public Enum MessageBoxButtons

继承

Object

ValueType

Enum

MessageBoxButtons

字段

AbortRetryIgnore	2	消息框包含“中止”、“重试”和“忽略”按钮。
CancelTryContinue	6	指定消息框包含“取消”、“重试”和“继续”按钮。
OK	0	消息框包含“确定”按钮。
OKCancel	1	消息框包含“确定”和“取消”按钮。
RetryCancel	5	消息框包含“重试”和“取消”按钮。
YesNo	4	消息框包含“是”和“否”按钮。
YesNoCancel	3	消息框包含“是”、“否”和“取消”按钮。

示例

下面的代码示例演示如何使用 MessageBox 来为用户提供阻止窗体关闭的机会。 此示例要求从 FormClosing 窗体的 事件调用 方法。

private:
   void Form1_FormClosing(Object^ sender, FormClosingEventArgs^ e)
   {
      // If the no button was pressed ...
      if ((MessageBox::Show(
         "Are you sure that you would like to close the form?", 
         "Form Closing", MessageBoxButtons::YesNo, 
         MessageBoxIcon::Question) == DialogResult::No))
      {
         // cancel the closure of the form.
         e->Cancel = true;
      }
   }

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    const string message =
        "Are you sure that you would like to close the form?";
    const string caption = "Form Closing";
    var result = MessageBox.Show(message, caption,
                                 MessageBoxButtons.YesNo,
                                 MessageBoxIcon.Question);

    // If the no button was pressed ...
    if (result == DialogResult.No)
    {
        // cancel the closure of the form.
        e.Cancel = true;
    }
}

Private Sub Form1_FormClosing( _
    ByVal sender As System.Object, _
    ByVal e As System.Windows.Forms.FormClosingEventArgs) _
    Handles MyBase.FormClosing

    Dim message As String = _
            "Are you sure that you would like to close the form?"
    Dim caption As String = "Form Closing"
    Dim result = MessageBox.Show(message, caption, _
                                 MessageBoxButtons.YesNo, _
                                 MessageBoxIcon.Question)

    ' If the no button was pressed ...
    If (result = DialogResult.No) Then
        ' cancel the closure of the form.
        e.Cancel = True
    End If
End Sub

注解

此枚举由 MessageBox 类使用。

另请参阅

• MessageBoxDefaultButton