vb如何读取配置文件的字符串|如何用VB读取ini配置文件

① vb 读写配置文件

下面这些代码可以实现对.INI文件的读写,用标准模块保存它..Attribute VB_Name = "INIReadWrite"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 Long, ByVal lpFileName As String) As LongPrivate 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''lpApplicationName 要在其中写入新字串的小节名称。这个字串不区分大小写''lpszSection String 指定要在其中写入新串的小节。如尚不存在,会创建这个小节。这个字串不区分大小写。''lpszKeyName String 要设置的项名或条目名。这个字串不区分大小写。用vbNullString可删除这个小节的所有设置项。''lpszString String 指定为这个项写入的字串值。用vbNullString表示删除这个项现有的字串。''lpFileName 读取文件名Dim INIFilePath As StringSub SetINI(ByVal INIPath As String)INIFilePath = INIPathEnd SubSub WriteKey(ByVal Section As String, ByVal Key As String, Optional ByVal KeyValue As String = "")WritePrivateProfileString Section, Key, KeyValue, INIFilePathEnd SubFunction ReadKey(ByVal Section As String, ByVal Key As String, Optional ByVal Size As Long = 256) As StringDim Str As StringStr = Space(Size)If GetPrivateProfileString(Section, Key, 0, Str, Size, INIFilePath) <> 0 Then ReadKey = StrEnd Function窗体的话你可以自己设计下,因为不知道你想要什么效果,或者你可以就上面的代码用MsgBox输出Key值来看看效果..

② 如何用VB读取ini配置文件

为了方便用户使用和使系统具有灵活性,大多数Win-dows应用程序将用户所做的选择以及各种变化的系统信息记录在初始化(INI)文件中。因此,当系统的环境发生变化时,可以直接修改INI文件,而无需修改程序。由此可见,INI文件对系统功能是至关重要的。本文将介绍采用VisualBasicforWindows(下称VB)开发Windows应用程序时如何读写INI文件。INI文件是文本文件,由若干部分(section)组成,在每个带括号的标题下面,是若干个以单个单词开头的关键词(keyword)和一个等号,每个关键词会控制应用程序某个功能的工作方式,等号右边的值(value)指定关键词的操作方式。其一般形式如下:[section1]keyword1=valuelkeyword2=value2……[section2]keyword1=value1keyword2=value2……其中,如果等号右边无任何内容(即value为空),那就表示Windows应用程序已为该关键词指定了缺省值,如果在整个文件中找不到某个关键词(或整个一部分),那同样表示为它们指定了缺省值。各个部分所出现的顺序是无关紧要的,在每一个部分里,各个关键词的顺序同样也无关紧要。读写INI文件通常有两种方式:一是在Windows中用"记事本"(Notepad)对其进行编辑,比较简单,无需赘述;二是由Windows应用程序读写INI文件,通常是应用程序运行时读取INI文件中的信息,退出应用程序时保存用户对运行环境的某些修改。关键词的值的类型多为字符串或整数型,应分两种情况读写。为了使程序具有可维护性和可移植性,最好把对INI文件的读写封装在一个模块(RWINI.BAS)中,在RWI-NI.BAS中构造GetIniS和GetIniN函数以及SetIniS和Se-tIniN过程,在这些函数和过程中需要使用WindowsAPI的"GetPrivateprofileString"、"GetPrivateProfileInt"和"WritePrivateProfileString"函数。RWINI.BAS模块的程序代码如下:在General-Declearation部分中声明使用到的WindowsAPI函数:Declare Function GetprivateprofileString Lib"Ker-nel"(ByVallpAppName As String,ByVallpKeyName As String,ByVallpDefault As String,ByVal lpRetrm-String As String,ByVal cbReturnString As Integer,ByVal Filename As String)As IntegerDeclare FunctionGetPrivatePfileInt Lib "Kernel"(ByVal lpAppName As String,ByVal lpKeyName As String,ByVal lpDefault As Integer,ByVal Filename As String)As IntegerDeclare Lib "Kernel"(ByVal lpApplicationName As String,ByVal lpKeyName As String,ByVal lpString As String,ByVal lplFileName As String)As IntegerFunction GetIniS(ByVal SectionName As String,ByVal KeyWord As String,ByVal DefString As String)As StringDim ResultString As String * 144,Temp As IntegerDims As String,i As IntegerTemp%=GetPrivateProfileString(SectionName,KeyWord,"",ResultString,144,AppProfileName())‘检索关键词的值IfTemp%>0Then‘关键词的值不为空s=""Fori=1To144IfAsc(Mid$(ResultString,I,1))=0ThenExitForElses=s&Mid$(ResultString,I,1)EndIfNextElseTemp%=WritePrivateProfilesString(sectionname,KeyWord,DefString,ppProfileName())‘将缺省值写入INI文件s=DefStringEndIfGetIniS=sEndFunctionFunctionGetIniN(ByValSectionNameAsString,ByValKeyWordAsString,ByValDefValueAsIneger)AsIntegerDimdAsLong,sAsStringd=DefValueGetIniN=GetPrivateProfileInt(SectionName,KeyWord,DefValue,ppProfileName())Ifd<>DefValueThens=""&dd=WritePrivateProfileString(SectionName,KeyWord,s,AppProfileName())EndIfEndFunctionSubSetIniS(ByValSectionNameAsString,BtVaKeyWordAsString,ByValValStrAsString)Dimres%res%=WritePrivateprofileString(SectionName,KeyWord,ValStr,AppProfileName())EndSubSubSetIniN(ByValSectionNameAsString,ByValKeyWordAsString,ByValValIntAsInteger)Dimres%,s$s$=Str$(ValInt)res%=WriteprivateProfileString(SectionName,KeyWord,s$,AppProfileName())EndSubSectionName为每一部分的标题,KeyWord为关键词,GetIniS和GetIniN中的DefValue为关键词的缺省值,SetIniS和SetIniN的ValStr和ValInt为要写入INI文件的关键词的值。为了能更好地说明如何使用以上函数和过程,下面举两个实例。实例1:开发应用程序通常要使用数据库和其它一些文件,这些文件的目录(包括路径和文件名)不应在程序中固定,而是保存在INI文件中,程序运行时由INI文件中读入。读入数据库文件的代码如下:DimDatabasenameAsStringDatabasename=GetIniS("数据库","职工","")IfDatabaseName=""ThenDatabaseName=InputBox("请输入数据库《职工》的目录"),App.Title)’也可通过"文件对话框"进行选择OnErrorResumeNextSetdb=OpenDatabas(DatabaseName)IfErr<>0ThenMsgBox"打开数据库失败!",MB-ICONSTOP,App.Title:GotoErrorProcessingElseSetIniS"数据库","职工",DatabaseNameEndIfOnErrorGoTo0……实例2:为了方便用户操作,有时需要保存用户界面的某些信息,例如窗口的高度和宽度等。装载窗体时,从INI文件中读入窗体高度和宽度,卸载窗体时将窗体当前高度和宽度存入INI文件,代码如下:Sub Form1_Load()……Forml.Height=GetIniN("窗体1","高度",6000)Form1.Width=GetIniN("窗体1","高度",4500)EndSub……Sub Form1_Unload()……SetIniN"窗体1","高度",Me.HeightSetIniN"窗体1,"宽度",Me.Width……End Sub

③ 请问高手用VB如何读取txt文件中的字符串

Open "c:\test.txt" For Input As #1 '把c:\test.txt换成你自己的文本文件名 While Not EOF(1) '只要没到文件尾部就一直循环Line Input #1, strtmp '每次读取一行str1 = Split(strtmp, ",") '把读取到的单行文本按逗号分隔成多个字符串,存放到str1中'这时,str1就是一个数组str1(0),str1(1)..分别对应field1, field2 Wendclose #1

④ VB读写配置INI文件

用INI文件的读写函数比较好 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 Private Function WriteIniFileString(StandKey As String, keyName As String, keyValue As String, FileName) As Long '写INI文件函数 Dim leninikey As Long Dim strkey As String * 255 WriteIniFileString = WritePrivateProfileString(StandKey, keyName, keyValue, FileName) End Function Private Function GetIniFileString(StandKey As String, keyName As String, Default As String, FileName As String) As String '读取INI文件函数 Dim leninikey As Long Dim strkey As String * 255 leninikey = GetPrivateProfileString(StandKey, keyName, Default, strkey, Len(strkey), FileName)

⑤ VB 读取字符串信息

以 “|” 来分割字符Private Sub Command1_Click() S = "属性1内容1|属性2内容1|属性3内容1|属性4内容1|属性五内容1" & vbCrLf & _ "属性1内容2|属性2内容2|属性3内容2|属性4内容2|属性5内容2" S = Replace(S, vbCrLf, "|") AR = Split(S, "|") For I = 0 To UBound(AR) Print AR(I) NextEnd Sub

⑥ vb6.0 读取配置文件内容

返回的字符串在retstr里面. 给你一个好用的函数参考.Public Function Read_ini(ByVal Appname As String, ByVal Itemname As String)Dim A As LongDim T As String * 100T = EmptyA = GetPrivateProfileString(Appname, Itemname, "", T, 100, App.Path & "\note.ini")If A = 0 Then Read_ini = EmptyElse Read_ini = Left$(T, Len(Trim$(T)) – 1)End IfEnd Function


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