VB與VB.net各自的優(yōu)勢與區(qū)別是什么？

vb.net是vb的升級。

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vb.net基于.net框架，是vb發(fā)展的必然趨勢。

vb功能非常強大，但是也存在眾多的缺點，所以微軟才會開發(fā)vb.net。

隨著時間的發(fā)展，vb.net完全取代vb是必然的

VB術語簡介

說明下面的代碼舉例說明了用 Drive 對象來訪問驅(qū)動器屬性：Sub ShowFreeSpace(drvPath) Dim fs, d, s Set fs = CreateObject("Scripting.FileSystemObject") Set d = fs.GetDrive(fs.GetDriveName(drvPath)) s = "Drive " UCase(drvPath) " - " s = s d.VolumeName vbCrLf s = s "Free Space: " FormatNumber(d.FreeSpace/1024, 0) s = s " Kbytes" MsgBox sEnd Sub.

vb.netfor循環(huán)占用cpu問題

重新啟動。vbnetfor循環(huán)占用cpu問題只要重新啟動就可以了。VBNET是一種簡單，現(xiàn)代，面向?qū)ο蟮挠嬎銠C編程語言，它由微軟開發(fā)，將NETFramework和公共語言運行庫的強大功能相結(jié)合。

vb.net的下載地址是什么？？？

下載地址：

網(wǎng)頁地址：;displaylang=zh-cn

自己到網(wǎng)上找注冊碼

VB.net 怎么制作按鍵連發(fā)功能

用API函數(shù)，以下代碼Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As LongPrivate Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long

Private Declare Function SetLayeredWindowAttributes Lib "user32" (ByVal hwnd As Long, ByVal crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As LongPrivate Const WS_EX_LAYERED = H80000

Private Const GWL_EXSTYLE = (-20)

Private Const LWA_ALPHA = H2

Private Const LWA_COLORKEY = H1Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long

Private Const HWND_TOPMosT = -1

Private Const SWP_NOMOVE = H2

Private Const SWP_NosIZE = H1

Private Declare Function GetForegroundWindow Lib "user32" () As Long

Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

Const WM_KEYDOWN = H100

Const WM_KEYUP = H101

Const WM_CHAR = H102

Const VK_F1 = H70

Private Sub SendF1(hwnd) '調(diào)用這個過程即可對目標窗體發(fā)送F1鍵

Call PostMessage(hwnd, WM_KEYDOWN, VK_F1, 0)

Call PostMessage(hwnd, WM_KEYUP, VK_F1, 0)

End Sub這里是發(fā)送F1的實例，各個按鍵對應的虛擬鍵碼，要到網(wǎng)上查

VB.net怎樣保存文件

保存文件的步驟為：

關閉流，特別是寫入流

關閉并保存文件

示例代碼如下：

Imports?System.Windows.Forms

Imports?System.IO

Imports?System.Text

Sub?SaveFileDemo()

'打開文件。如果文件不存在則創(chuàng)建新的文件

Dim?myFile?As?New?IO.FileStream("d:\data.txt",?_

FileMode.OpenOrCreate,?_

FileAccess.Write)

'在文件末尾添加一行?

Dim?tw?As?New?StreamWriter(myFile)

myFile.Seek(0,?SeekOrigin.End)

tw.WriteLine("白刃格斗英雄連英模部隊方隊亮相閱兵")

'關閉流

tw.Close()

'關閉文件并保存文件

myFile.Close()

End?Sub

VB.NET中怎么把16進制數(shù)的最后2位取出來啊，并轉(zhuǎn)換成字符串啊，

a="habcd"

if len(a)=2 then

msgbox "0" right(a,1)

else

msgbox right(a,2)

end if