vb.net刷新代码 vbs无限刷新代码

VB.net 定时刷新的问题

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

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Me.Timer1.Interval = 2000(两秒)

Me.Timer1.Start()

End Sub

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

MsgBox("Hello World")

End Sub

在界面拖一个Button和Timer试试这个效果，在界面双击Timer控件，代码应该很明白了

用VB.NET怎么实现网页定时刷新

在网页的head/head中加入以下代码： meta http-equiv=refresh content=" 100 " 以上加粗部分为你要设置的秒数，就是隔几秒就刷新一次。

采纳哦

VB.NET设置屏幕分辨率、颜色位数、刷新率 实例代码

这篇文章介绍了VB.NET设置屏幕分辨率、颜色位数、刷新率

实例代码，有需要的朋友可以参考一下

复制代码

代码如下:

Private

Declare

Function

GetDeviceCaps

Lib

"gdi32"

(ByVal

hdc

As

Long,

ByVal

nIndex

As

Long)

As

Long

Private

Declare

Function

ChangeDisplaySettings

Lib

"user32"

Alias

"ChangeDisplaySettingsA"

(lpDevMode

As

Any,

ByVal

dwflags

As

Long)

As

Long

Private

Const

CCDEVICENAME

As

Long

=

32

Private

Const

CCFORMNAME

As

Long

=

32

Private

Const

DM_BITSPERPEL

As

Long

=

H40000

Private

Const

DM_PELSWIDTH

As

Long

=

H80000

Private

Const

DM_PELSHEIGHT

As

Long

=

H100000

Private

Const

DM_DISPLAYFLAGS

As

Long

=

H200000

Private

Const

DM_DISPLAYFREQUENCY

=

H400000

Private

Const

CDS_FORCE

As

Long

=

H80000000

Private

Const

BITSPIXEL

As

Long

=

12

Private

Const

HORZRES

As

Long

=

8

Private

Const

VERTRES

As

Long

=

10

Private

Const

VREFRESH

=

116

Private

Type

DEVMODE

dmDeviceName

As

String

*

CCDEVICENAME

dmSpecVersion

As

Integer

dmDriverVersion

As

Integer

dmSize

As

Integer

dmDriverExtra

As

Integer

dmFields

As

Long

dmOrientation

As

Integer

dmPaperSize

As

Integer

dmPaperLength

As

Integer

dmPaperWidth

As

Integer

dmScale

As

Integer

dmCopies

As

Integer

dmDefaultSource

As

Integer

dmPrintQuality

As

Integer

dmColor

As

Integer

dmDuplex

As

Integer

dmYResolution

As

Integer

dmTTOption

As

Integer

dmCollate

As

Integer

dmFormName

As

String

*

CCFORMNAME

dmUnusedPadding

As

Integer

dmBitsPerPel

As

Integer

dmPelsWidth

As

Long

dmPelsHeight

As

Long

dmDisplayFlags

As

Long

dmDisplayFrequency

As

Long

End

Type

Private

Sub

cmdChangeDesktopMode_Click()

Dim

DM

As

DEVMODE

With

DM

.dmPelsWidth

=

CInt(txtNewWidth.Text)

.dmPelsHeight

=

CInt(txtNewHeight.Text)

.dmBitsPerPel

=

CInt(txtNewColor.Text)

.dmDisplayFrequency

=

CInt(txtNewFreq.Text)

.dmFields

=

DM_PELSWIDTH

Or

DM_PELSHEIGHT

Or

DM_BITSPERPEL

Or

DM_DISPLAYFREQUENCY

.dmSize

=

LenB(DM)

End

With

If

ChangeDisplaySettings(DM,

CDS_FORCE)

Then

MsgBox

"错误!不支持此模式！"

End

If

End

Sub

Private

Sub

Form_Load()

txtOldWidth.Text

=

GetDeviceCaps(Me.hdc,

HORZRES)

txtOldHeight.Text

=

GetDeviceCaps(Me.hdc,

VERTRES)

txtOldColor.Text

=

GetDeviceCaps(Me.hdc,

BITSPIXEL)

txtOldFreq.Text

=

GetDeviceCaps(Me.hdc,

VREFRESH)

End

Sub

vb.net中如何关闭屏幕刷新?

vb.net中关闭屏幕刷新方法为：

1、修改完恢复初始状态callformload。

2、显示修改后信息，控件refresh，例如用data控件，则data1.refresh即可。

3、数据库资料用label显示，则label.refresh同时用me.refresh。

VBA中的关闭屏幕刷新：Application.ScreenUpdating = False，在VB.NET 中是怎么写的？

可以参考下面的代码：

Dim myexcel As excel.Application

On Error Resume Next

Set myexcel = GetObject(, "Excel.Application")

myexcel.Application.ScreenUpdating = False

扩展资料：

VB.NET关键词

Namespace包含类似或相关功能的类的集合

Class用来定义一个类用以存储对象的属性、方法和事件

Sub子过程，可以把要使用的数据以参数形式传入，但不返回值

Function函数，同样可以传参数，但要求有返回值

Property属性过程，设置或返回对象的属性值

Nothing表示一个变量没有值，与其他语言或数据库中的null等价

参考资料来源：百度百科-Visual Basic .NET