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vb.net無法寫入,vb中只能讀不能寫

vb NET 文件寫入磁盤問題

你用的WriteLine, Line就是行,所以會加換行符

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如果用Sw1.Write("....");就不會換行

vb.net剪貼板寫入時隨機出現失敗,正常否?

在寫System.Windows.Forms.Clipboard.SetText時,提示是依系統,也就是說不一定可使用,鑒于是匿名提問就點到而止

VB.net“嘗試讀取或寫入受保護的內存。這通常指示其他內存已損壞。”

vb.net 有專門的托盤圖標控件 在工具箱里直接添加一個就可以了 兩行代碼即可

NotifyIcon1.Icon?=?Me.Icon

NotifyIcon1.Visible?=?True

VB.NET2012數據無法寫入到MDB文件中

在資源文件管理器中,找到數據庫,屬性管理器中出現屬性,選擇不復制,或當文件最新時才復制

vb.net嘗試讀取或寫入受保護的內存。這通常指示其他內存已損壞

這說明你調用 API 傳參存在問題。

首先有沒有設置結構體內存對齊?

[StructLayout(LayoutKind.Sequential)] 加了嗎?

COLORREF 不要用 Color 代替,用 int 代替

TCHAR cfFaceName[32] 定義為 Byte 數組也可以,帶在傳參前,必須初始化為 32 個長度

vb.net 寫入內存值不正確

Imports System.Runtime.InteropServices

Public Class MemoryEditor

Inherits WINAPI.NativeMethods

Private phwnd As IntPtr

Private Buffer As Byte()

Private BytesRead As IntPtr

Private BytesWrite As IntPtr

''' summary創建內存編輯器/summary

''' param name="processHwnd"進程句柄/param

Sub New(processHwnd As IntPtr)

Me.phwnd = processHwnd

End Sub

''' summary根據指定偏移量讀取內存基址/summary

''' param name="addr"內存地址/param

''' param name="offsets"偏移量數組/param

Public Function ReadBaseAddress(addr As IntPtr, offsets() As Integer) As IntPtr

Dim address As IntPtr = ReadMemoryToInteger(addr)

For Each offset As Integer In offsets

address = address.ToInt32 + offset

address = ReadMemoryToInteger(address)

If address = IntPtr.Zero Then

Dim errInfo As String = "內存偏移量[" Hex(offset) "]錯誤!"

Throw New Exception(errInfo)

End If

Next

Return address

End Function

''' summary讀取4字節內存數值/summary

''' param name="addr"內存地址/param

Public Function ReadMemoryToInteger(addr As IntPtr) As Integer

Buffer = New Byte(3) {}

ReadProcessMemory(phwnd, addr, Buffer, 4, BytesRead)

Return BitConverter.ToInt32(Buffer, 0)

End Function

''' summary讀取4字節內存數組/summary

''' param name="addr"內存地址/param

Public Function ReadMemoryToBytes(addr As IntPtr) As Byte()

Buffer = New Byte(3) {}

ReadProcessMemory(phwnd, addr, Buffer, 4, BytesRead)

Return Buffer

End Function

''' summary將內存值數組寫入指定地址/summary

''' param name="addr"內存地址/param

''' param name="buffer"內存值數組/param

Public Function WriteMemoryByBytes(addr As IntPtr, buffer As Byte()) As Boolean

Return WriteProcessMemory(phwnd, addr, buffer, buffer.Length, BytesWrite)

End Function

End Class

Namespace WINAPI

Public MustInherit Class NativeMethods

DllImport("kernel32.dll", SetLastError:=True) _

Public Shared Function ReadProcessMemory(ByVal hProcess As IntPtr, _

ByVal lpBaseAddress As IntPtr, _

Out() ByVal lpBuffer() As Byte, _

ByVal dwSize As Integer, _

ByRef lpBytesRead As Integer) As Boolean

End Function

DllImport("kernel32.dll", SetLastError:=True) _

Public Shared Function WriteProcessMemory(ByVal hProcess As IntPtr, _

ByVal lpBaseAddress As IntPtr, _

ByVal lpBuffer As Byte(), _

ByVal nSize As Integer, _

Out() ByRef lpBytesWritten As IntPtr) As Boolean

End Function

End Class

End Namespace

是不是內存讀寫代碼有問題!用上面的代碼試試,我以前寫的;

調用方法:

Dim mem As New MemoryEditor(進程句柄)

Dim offsets As Integer() = {H1, H2, H3} '{一級基址,二級基址,三級基址}

Dim baseaddr As IntPtr = mem.ReadBaseAddress(內存地址, offsets)

Dim value As Integer = mem.ReadMemoryToInteger(baseaddr)

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