vb.net MSGBOX 用法

MSGBOX是Visual Basic.NET中的一个函数，用于弹出消息框，并显示指定的文本和按钮。MSGBOX的用法如下：

1. 显示一个简单的消息框

MSGBOX("Hello World!")

这将弹出一个消息框，显示"Hello World!"。

2. 显示一个带标题的消息框

MSGBOX("Hello World!", MsgBoxStyle.Information, "Welcome")

这将弹出一个消息框，显示"Hello World!"，并在标题栏显示"Welcome"。

3. 显示一个带有多个按钮的消息框

MSGBOX("Are you sure you want to delete this file?", MsgBoxStyle.YesNoCancel)

这将弹出一个消息框，显示"Are you sure you want to delete this file?"，并显示"Yes"、"No"和"Cancel"三个按钮。

4. 获取用户的响应

Dim response As MsgBoxResult

response = MsgBox("Are you sure you want to delete this file?", MsgBoxStyle.YesNo)

If response = MsgBoxResult.Yes Then
'用户点击了"Yes"按钮，执行删除操作
Else
'用户点击了"No"按钮，取消删除操作
End If

这将弹出一个消息框，显示"Are you sure you want to delete this file?"，并显示"Yes"和"No"两个按钮。代码通过获取用户的响应来判断用户是否点击了"Yes"按钮，如果是，则执行删除操作；如果是"No"按钮，则取消删除操作。

5. 显示一个带有自定义按钮文本的消息框

Dim buttons() As String = {"Yes, please", "No, thank you", "Maybe later"}

Dim result As Integer = MsgBox("Would you like some tea?", MsgBoxStyle.YesNoCancel, "Tea Time")

If result = MsgBoxResult.Yes Then
MsgBox("Great, I'll make some tea for you.")
ElseIf result = MsgBoxResult.No Then
MsgBox("Okay, maybe next time.")
Else
MsgBox("No problem, enjoy your day.")
End If

这将弹出一个消息框，显示"Would you like some tea?"，并显示三个自定义按钮文本"Yes, please"、"No, thank you"和"Maybe later"。代码通过获取用户的响应来判断用户点击了哪个按钮，并执行相应的操作。