vb.net读写ini文件问题

以下是我的办法:OK!

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Public Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Integer, ByVal lpFileName As String) As Integer

Public Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpString As String, ByVal lpFileName As String) As Integer

写:

WritePrivateProfileString("存储", "账号", textbox1, Application.StartupPath "\song.ini")

读:

dim s as string

s = string(255," ")

GetPrivateProfileString("存储", "账号", s, s.Length, Application.StartupPath + "\song.ini")

textbox1 =s

【vb.net】求个用VS2013读写INI的代码

vb.net有自己的设置，不需要ini，在工程【属性】-【设置】中设置。

——————

ini设置属性。

'声明API函数

Private Declare Function WritePrivateProfileString Lib "kernel32" Alias "WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpString As String, ByVal lpFileName As String) As Int32

Public Function WriteINI(ByVal Section As String, ByVal AppName As String, ByVal lpDefault As String, ByVal FileName As String) As Long

Return WritePrivateProfileString(Section, AppName, lpDefault, FileName)

End Function

‘调用writeini函数存储属性。

‘section为节点，也就是ini中带[]符号的节点文本

’APPname为存储的名称，即ini文件中等于符号前面的文本

’ipdefault为存储的属性，即等于符号右边的文本。

‘filename为存储的ini文件地址，如d:\save.ini

————————

ini返回属性。

'声明API函数

Private Declare Function GetPrivateProfileString Lib "kernel32" Alias "GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As String, ByVal lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Int32, ByVal lpFileName As String) As Int32

Private Function GetINI(ByVal Section As String, ByVal AppName As String, ByVal lpDefault As String, ByVal FileName As String) As String

Dim Str As String = ""

Str = LSet(Str, IniCount)

GetPrivateProfileString(Section, AppName, lpDefault, Str, Len(Str), FileName)

Return Microsoft.VisualBasic.Left(Str, InStr(Str, Chr(0)) - 1)

End Function

’调用getini函数

‘说明同上。

VB.NET怎么删除INI文件里的一个字段或键值？

1，对于INI文件，可以当做像TXT文件一样来进行读取和写入。

2，先把整个文件度出来，然后找到相应行删除（抛弃）以后，再重新写入文件。

Public Class Form1

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

Dim MyStr As String = ""

Dim AllStr As String = ""

'获取一个可用的文件号

Dim MyFileNum As Integer = FreeFile()

'打开指定的文件，进行读取操作

FileOpen(MyFileNum, "C:\My.ini", OpenMode.Input)

Do While Not EOF(MyFileNum)

'读取一行

MyStr = LineInput(MyFileNum)

If MyStr  "b=2" Then

If AllStr = "" Then

AllStr = AllStr  MyStr

Else

AllStr = AllStr  vbCrLf  MyStr

End If

End If

Loop

FileClose(MyFileNum)   '关闭文件

'写文件

Dim MyStream As New System.IO.FileStream("C:\My.ini", IO.FileMode.Create)

Dim MyWriter As New System.IO.StreamWriter(MyStream, System.Text.Encoding.UTF8)

MyWriter.WriteLine(AllStr)

MyWriter.Flush()

MyWriter.Close()

MyStream.Close()

End Sub

End Class

vb读写ini文件

两种方法

1、API

[名称] 读写INI文件的四个函数

[数据来源] 自己制作

[来源时间] 2002.01.04

[内容简介] 空

[源代码内容]

'文件名SourceDB.ini文件

Private Declare Function GetPrivateProfileString Lib "kernel32" Alias

"GetPrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As Any, ByVal

lpDefault As String, ByVal lpReturnedString As String, ByVal nSize As Long, ByVal lpFileName As String) As Long

Private Declare Function WritePrivateProfileString Lib "kernel32" Alias

"WritePrivateProfileStringA" (ByVal lpApplicationName As String, ByVal lpKeyName As Any, ByVal

lpString As Any, ByVal lpFileName As String) As Long

'以下两个函数,读/写ini文件,固定节点setting,in_key为写入/读取的主键

'仅仅针对是非值

'Y：yes,N：no,E：error

Public Function GetIniTF(ByVal In_Key As String) As Boolean

On Error GoTo GetIniTFErr

GetIniTF = True

Dim GetStr As String

GetStr = VBA.String(128, 0)

GetPrivateProfileString "Setting", In_Key, "", GetStr, 256, App.Path "\SourceDB.ini"

GetStr = VBA.Replace(GetStr, VBA.Chr(0), "")

If GetStr = "1" Then

GetIniTF = True

GetStr = ""

Else

GoTo GetIniTFErr

End If

Exit Function

GetIniTFErr:

Err.Clear

GetIniTF = False

GetStr = ""

End Function

Public Function WriteIniTF(ByVal In_Key As String, ByVal In_Data As Boolean) As Boolean

On Error GoTo WriteIniTFErr

WriteIniTF = True

If In_Data = True Then

WritePrivateProfileString "Setting", In_Key, "1", App.Path "\SourceDB.ini"

Else

WritePrivateProfileString "Setting", In_Key, "0", App.Path "\SourceDB.ini"

End If

Exit Function

WriteIniTFErr:

Err.Clear

WriteIniTF = False

End Function

'以下两个函数,读/写ini文件,不固定节点,in_key为写入/读取的主键

'针对字符串值

'空值表示出错

Public Function GetIniStr(ByVal AppName As String, ByVal In_Key As String) As String

On Error GoTo GetIniStrErr

If VBA.Trim(In_Key) = "" Then

GoTo GetIniStrErr

End If

Dim GetStr As String

GetStr = VBA.String(128, 0)

GetPrivateProfileString AppName, In_Key, "", GetStr, 256, App.Path "\SourceDB.ini"

GetStr = VBA.Replace(GetStr, VBA.Chr(0), "")

If GetStr = "" Then

GoTo GetIniStrErr

Else

GetIniStr = GetStr

GetStr = ""

End If

Exit Function

GetIniStrErr:

Err.Clear

GetIniStr = ""

GetStr = ""

End Function

Public Function WriteIniStr(ByVal AppName As String, ByVal In_Key As String, ByVal In_Data As String) As Boolean

On Error GoTo WriteIniStrErr

WriteIniStr = True

If VBA.Trim(In_Data) = "" Or VBA.Trim(In_Key) = "" Or VBA.Trim(AppName) = "" Then

GoTo WriteIniStrErr

Else

WritePrivateProfileString AppName, In_Key, In_Data, App.Path "\SourceDB.ini"

End If

Exit Function

WriteIniStrErr:

Err.Clear

WriteIniStr = False

End Function

以上代码保存于： SourceCode Explorer(源代码数据库)

复制时间： 2007.12.26 17:29:09

软件版本： 1.0.882

软件作者： Shawls

E-Mail： ShawFile@163.com

QQ： 9181729

2、用open打开文件全部读入，如果有修改覆盖写入文件

VB.NET写ini文件时缓冲区是什么意思

缓冲区是存放字符串的，防止字符串过大把内存溢出，引起异常。是中间的一个缓冲地带。这个是原理。你用那个函数就行了。

vb.net中，读取和写入文件

写入：Dim sr As New IO.StreamWriter(Application.StartupPath "/写入的文本.txt")

sr.WriteLine("写入的内容") sr.Close()读取：If (File.Exists(Application.StartupPath "/msg.txt")) Then

Dim fm As New IO.FileStream(Application.StartupPath "/读取的文本.txt", FileMode.Open)

Dim sr As IO.StreamReader = New IO.StreamReader(fm)

Do While sr.Peek() = 0

TextBox1.Text = sr.ReadLine() （读取文本到文本框）

Loop end if

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