遍历整个html中的input标签,筛选出type为button的,取出onclick里的函数签名,注入一段js去执行这个函数
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网页中的按钮没有句柄可言,只有控件id,你想要的到底是什么,找到按钮模拟点击按钮?
找到按钮不难,查找input,id是那个按钮的话就用DOM获取到,然后发送.click方法
也可以用附加js脚本的方式来实现点击那个按钮,js脚本里实现获取那个按钮并点击
将这些RadioButton控件放入一个容器中,,以Panel1为例,代码如下:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
For Each R As RadioButton In Panel1.Controls
If R.Checked Then
Debug.WriteLine(R.Name " 被选中.")
End If
Next
End Sub
把那三个GroupBox放在Panel1中就行了.
这个简单呀,select * from 表名称 where 列名称'全部' (也就是查找某列的值ComboBox当前值,就显示出所有的记录了),希望能帮到你
步骤如下:
窗体上添加2个列表框,一个按钮:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim MyDir As String = "C:\123"
'搜索并显示子文件夹
ListBox1.Items.Clear()
For Each MySubDir As String In System.IO.Directory.GetDirectories(MyDir)
ListBox1.Items.Add(MySubDir)
Next
'搜索并显示文件
ListBox2.Items.Clear()
For Each MyFile As String In System.IO.Directory.GetFiles(MyDir)
ListBox2.Items.Add(MyFile)
Next
End Sub
End Class
用API GetKeyboardState ,判断所有的键里哪些被按下了。
下面的是判断键盘灯的状态
Public Class NativeMethods
Private Shared keyState() As Byte
DllImport("user32.dll") _
Private Shared Function GetKeyboardState(ByVal keyState() As Byte) As Boolean
End Function
Private Shared Sub Update()
keyState = New Byte(256) {}
Dim result As Boolean = GetKeyboardState(keyState)
' Check for error:
If result = False Then
Debug.WriteLine("GetKeyBoardState error: " Marshal.GetLastWin32Error)
Throw New Exception("GetKeyBoardState error: " Marshal.GetLastWin32Error)
End If
End Sub
Public Enum LightState
Off
[On]
End Enum
' Example - the keyboard lights...
Public Shared ReadOnly Property CapsLockState() As LightState
Get
Update()
Dim isOn As Boolean = (keyState(Keys.CapsLock) = 1)
Return IIf(isOn, LightState.On, LightState.Off)
End Get
End Property
Public Shared ReadOnly Property NumLockState() As LightState
Get
Update()
Dim isOn As Boolean = (keyState(Keys.NumLock) = 1)
Return IIf(isOn, LightState.On, LightState.Off)
End Get
End Property
Public Shared ReadOnly Property ScrollLockState() As LightState
Get
Update()
Dim isOn As Boolean = (keyState(Keys.Scroll) = 1)
Return IIf(isOn, LightState.On, LightState.Off)
End Get
End Property
End Class