b错了因为vb变量名不能有空格答案应该是d
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必须以字母开头不能有特殊的名称d选项没问题
两个都不是,xyz2 _pp 这两个是合法的,变量命名规则是,不能以数字开头,可以用下划线开头,下划线按法,按住shift键不放再按减号,输入法必须是英文状态下
A AND
D [10,99]
CFalse
D IsMdi container
C Menustrip
B ForeColor
D.PasswordChar
A关系或逻辑表达式
D byte
C True
B.蓝色
C F5
A任何情况下,通过窗体名称都可以实现窗体间的调用
B RadioButton
D DropDownList
这个应该可以,已经通过VB2010测试:
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
If TextBox1.Text "" Then
If Microsoft.VisualBasic.Right(TextBox1.Text, 1) = "/" Or Microsoft.VisualBasic.Right(TextBox1.Text, 1) = "*" Or _
Microsoft.VisualBasic.Right(TextBox1.Text, 1) = "?" Or Microsoft.VisualBasic.Right(TextBox1.Text, 1) = "" Or _
Microsoft.VisualBasic.Right(TextBox1.Text, 1) = "" Then
TextBox1.Text = Microsoft.VisualBasic.Left(TextBox1.Text, Len(TextBox1.Text) - 1)
TextBox1.SelectionStart = Len(TextBox1.Text)
End If
End If
End Sub
'代码来源:代码街codejie.net
'由于在vb.net里变量名不区分大小写(StuName和stuname是一样的),所以个别变量名需要修改
'在vb.net中,模块级变量的命名原则是以m_开头
Public Class Student
Private m_stuNo As String '学生号字段
Private m_stuName As String '学生姓名字段
Private m_stuAge As Integer '学生年龄字段
Private m_stuAddress As String '学生住址字段
'无参构造方法
Public Sub New()
End Sub
'有参构造方法
Public Sub New(ByVal stuNo As String, ByVal stuName As String, ByVal stuAge As Integer, ByVal stuAddress As String)
m_stuNo = stuNo
m_stuName = stuName
m_stuAge = stuAge
m_stuAddress = stuAddress
End Sub
'学生号属性
Public Property StuNo() As String
Get
Return m_stuNo
End Get
Set(ByVal value As String)
m_stuNo = value
End Set
End Property
'学生姓名属性
Public Property StuName() As String
Get
Return m_stuName
End Get
Set(ByVal value As String)
m_stuName = value
End Set
End Property
'学生年龄属性
Public Property StuAge() As Integer
Get
Return m_stuAge
End Get
Set(ByVal value As Integer)
m_stuAge = value
End Set
End Property
'学生住址属性
Public Property StuAddress() As String
Get
Return m_stuAddress
End Get
Set(ByVal value As String)
m_stuAddress = value
End Set
End Property
End Class