vb.netpan vbnet判断目录和新建目录
vb.net 窗体布局的问题
1.先在窗体放置两个pane,pane1的Dock属性是Left,pane2是fill
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2.再添加两个pane,分别为pane3,pane4,把她们添加到pane2里面
3.再添加两个button,放置到pane1里面
4.往pane3和pane4中分别放点不同的东西
5.然后button的事件是:
private void button1_Click(object sender, EventArgs e)
{
this.panel3.Visible = true;
this.panel4.Visible = false;
}
private void button2_Click(object sender, EventArgs e)
{
this.panel3.Visible = false;
this.panel4.Visible = true;
}
大概都是这么实现的,具体的效果还需要丰富
我以前也研究过vista优化大师的效果
也仿照出来了,如果你需要源代码,可以写上你的邮箱,我给你发过去
vb.net动态添加控件,并且绑定了一些事件,这些事件只能对最新生成的控件做修改,之前生成的无法修改
比如说这样添加的计时器:
Dim Timer1 As New Timer
你要在合适的地方开始,比如窗体Load事件中,这样:
Timer1.Interval = 1000 '单位毫秒,1000毫秒=1秒
Timer1.Enabled = True '启用计时器
然后在代码窗口上方下拉列表里选择Timer1的Tick事件,自动添加代码:
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
End Sub
这是计时器触发的事件,每秒触发一次,在这里面输入循环判断是否有日程即可。提示:你可以用Now对象获取当前的日期和时间。
用VB.NET 怎么编映射网络磁盘
本来可以用简单的dos命令的,但是影射成功与否返回不理想,建议用API,见下面
Module LocalNetConnect'模块,直接复制即可
Public Declare Function WNetAddConnection2 Lib "mpr.dll" Alias "WNetAddConnection2A" (ByRef lpNetResource As NETRESOURCE, ByVal lpPassword As String, ByVal lpUserName As String, ByVal dwFlags As Integer) As Integer
Public Declare Function WNetCancelConnection2 Lib "mpr.dll" Alias "WNetCancelConnection2A" (ByVal lpName As String, ByVal dwFlags As Integer, ByVal fForce As Integer) As Integer
Public Structure NETRESOURCE
Dim dwScope As Integer
Dim dwType As Integer
Dim dwDisplayType As Integer
Dim dwUsage As Integer
Dim lpLocalName As String
Dim lpRemoteName As String
Dim lpComment As String
Dim lpProvider As String
End Structure
Public Function netconnect(ByVal localDrive As String, ByVal sharePath As String, ByVal userName As String, ByVal UserPassword As String) As Boolean
Dim NetR As New NETRESOURCE
Dim ErrInfo As Integer
NetR.dwScope = 2
NetR.dwType = 1
NetR.dwDisplayType = 3
NetR.dwUsage = 1
'设置驱动器
NetR.lpLocalName = localDrive
'设置远程端口名字
NetR.lpRemoteName = sharePath
'设置连接
ErrInfo = WNetAddConnection2(NetR, UserPassword, userName, 1)
If ErrInfo = 0 Then
Return True
Else
Return False
End If
End Function
Public Function netdisconnect(ByVal localDrive As String) As Boolean
Dim ErrInfo As Integer
ErrInfo = WNetCancelConnection2(localDrive, 1, False)
If ErrInfo = 0 Then
Return True
Else
Return False
End If
End Function
End Module
‘调用
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'这里是映射调用,administrator为用户名,根据实际用户名
’如果将“Z:”设置为空就不会网络盘映射但是已经和172.26.120.47联机了(返回真时成立)。
If netconnect("Z:", "\\172.26.120.47\c$", "administrator", "局域网电脑实际密码") = True Then
MsgBox("success")
Else
MsgBox("Faile")
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click'这里是取消映射
If netdisconnect("Z:") = True Then
MsgBox("success")
Else
MsgBox("Faile")
End If
End Sub
VB.net 高次曲线拟合并绘图
构造Pen的时候可以指定粗细,如果你指定为1,并且放大了10倍,最后就成10了,所以你指定小点就行了,比如 Dim p As New Pen(Color.Black, 0.01) 最终绘制的线的粗细不会小于1
标题名称:vb.netpan vbnet判断目录和新建目录
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