如何用vb.net编写读取txt内容的代码？

窗体上添加2个文本框，设置成多行，2个按钮，在文本框1里随便输入若干文字，可以多行，单击按钮1，保存到文件。然后单击按钮2，把刚才写入的文件读到文本框2里。

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代码如下：

'写文本文件

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

'创建(写入)一个文本文件

Dim MyStream As New System.IO.FileStream(Application.StartupPath "\Ssk.txt", System.IO.FileMode.Create)

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

MyWriter.WriteLine(TextBox1.Text)

MyWriter.Flush()

MyWriter.Close()

MyStream.Close()

End Sub

'读文本文件

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click

'读取一个文本文件

Dim MyReader As New System.IO.StreamReader(Application.StartupPath "\Ssk.txt", System.Text.Encoding.UTF8)

TextBox2.Text = MyReader.ReadToEnd()

MyReader.Close()

End Sub

气斜射入水或其他介质，折射光线与入射光线法线在

vb.net 中如何进行文件的读写

一般来讲asp.net的服务器运行应用所用的账号只有对应用所在目录(放网页的目录)的访问权限，你可以把文件存储在应用所在目录或者子目录试试。

My.Computer.FileSystem.WriteAllText(Server.MapPath("") “\" Now.toString("yyyyMMdd") ".txt", "URL：XXXXXX查询完成，匹配成功！" vbCrLf, true, System.Text.Encoding.Default)

求VB.NET写的自动保存txt文档的代码

直接给你保存和读取TXT的VB.NET的函数代码，你只要在触发事件中调用就可以了，注意换行，有的是显示不下去才显示两行的，还有strFilePath代表文件路径，TempENG代表文件编码格式如：UTF-8或者GB2312，strText 代表内容字符串。

#Region "读取TXT"

Public Function ReadTxt(ByVal strFilePath As String, ByVal TempENG As String) As String

Dim mySr As System.IO.StreamReader

Dim strS As String

Dim n%

strS = ""

mySr = New System.IO.StreamReader(strFilePath, System.Text.Encoding.GetEncoding(TempENG))

Do

Dim line$ = mySr.ReadLine()

strS = strS line vbCrLf

n = n + 1

Loop Until mySr.EndOfStream = True

mySr.Close()

Return strS

End Function

#End Region

#Region "保存TXT"

Public Function SaveTxt(ByVal strFilePath As String, ByVal strText As String, ByVal TempENG As String) As Boolean

Try

If Dir(strFilePath) "" Then File.Delete(strFilePath)

Dim mySw As System.IO.StreamWriter

Dim strLine() As String

mySw = New System.IO.StreamWriter(strFilePath, True, System.Text.Encoding.GetEncoding(TempENG))

strLine = Split(strText, vbCrLf)

For i As Integer = 0 To UBound(strLine)

mySw.WriteLine(strLine(i))

Next

mySw.Close()

Return True

Catch ex As Exception

Return False

End Try

End Function

#End Region

vb.net怎么写代码给指定的硬盘里的文件创建桌面快捷方式

简单啊，可以调用命令行，不要死脑筋哦

[InternetShortcut] "E:\guiminer.url"

URL="E:\guiminer.exe" "E:\guiminer.url"

IconIndex=0 "E:\guiminer.url"

IconFile="E:\guiminer.exe" "E:\guiminer.url"

VB.Net怎么创建文件

举个例子：

先引入命名空间：

Imports

System.IOImports

System.Security.AccessControl

代码：

Dim

sec

As

DirectorySecurity

=

New

DirectorySecurityDim

rule

As

FileSystemAccessRule

=

New

FileSystemAccessRule("Administrator",

FileSystemRights.Delete,

AccessControlType.Allow)sec.AddAccessRule(rule)Directory.CreateDirectory("C:\test",

sec)

这段代码就是以

Administrator

帐户

在

C:\

创建

test

文件夹。

用vb.net编写记事本源代码

Dim sFileName As String

Dim Search

Private Sub dateTimeMenu_Click()

Text1.Text = Now

End Sub

Private Sub deleteMenu_Click()

Text1.Text = Left(Text1.Text, Text1.SelStart) + Mid(Text1.Text, Text1.SelStart + Text1.SelLength + 1)

End Sub

Private Sub findMenu_Click()

Search = InputBox("请输入要查找的字词：")

Dim Where1 '获取需要查找的字符串变量

Text1.SetFocus '文本框获得焦点，以显示所找到的内容Search = InputBox("请输入要查找的字词：")

Where1 = InStr(Text1.Text, Search) '在文本中查找字符串

If Where1 Then

'若找到则设置选定的起始位置并使找到的字符串高亮

Text1.SelStart = Where1 - 1

Text1.SelLength = Len(Search)

' Me.Caption = Where1 '测试用

'否则给出提示

Else: MsgBox "未找到所要查找的字符串。", vbInformation, "提示"

End If

End Sub

Private Sub findNextMenu_Click()

Dim Where2

Dim StartMe As Integer '查找的起始位置变量

Text1.SetFocus '文本框获得焦点

StartMe = Text1.SelLength + Text1.SelStart + 1 '给变量赋值

Where2 = InStr(StartMe, Text1.Text, Search) '令其从上次找到的地方找起

If Where2 Then

Text1.SelStart = Where2 - 1

Text1.SelLength = Len(Search)

Else: MsgBox "未找到所要查找的字符串.", vbInformation, "提示"

End If

End Sub

Private Sub aboutMenu_Click()

MsgBox Space(2) "文本编辑器版本号1.0" Chr(13) "由西南财经大学天府学院" Chr(13) Space(5) "肖忠 开发" Chr(13) Space(2) "copyright:天府学院"

End Sub

Private Sub allMenu_Click()

Text1.SelStart = 0

Text1.SelLength = Len(Text1.Text)

End Sub

Private Sub backcolorMenu_Click() '设置背景色代码

Form1.CommonDialog1.Action = 3

Text1.BackColor = Form1.CommonDialog1.Color

End Sub

Private Sub colorMenu_Click() '改变文字颜色代码

Form1.CommonDialog1.Action = 3

Text1.ForeColor = Form1.CommonDialog1.Color

End Sub

Private Sub cutMenu_Click()

Clipboard.SetText Text1.SelText

Text1.Text = Left(Text1.Text, Text1.SelStart) + Mid(Text1.Text, Text1.SelStart + Text1.SelLength + 1)

End Sub

Private Sub exitMenu_Click()

End

End Sub

Private Sub fontMenu_Click() '字体菜单代码

Form1.CommonDialog1.Flags = 3 Or 256

Form1.CommonDialog1.Action = 4

If Len(Form1.CommonDialog1.FontName) = 0 Then

Form1.Text1.FontName = "宋体"

Else

Form1.Text1.FontName = Form1.CommonDialog1.FontName

End If

Form1.Text1.FontSize = Form1.CommonDialog1.FontSize

If Form1.CommonDialog1.FontBold = True Then

Form1.Text1.FontBold = True

Else

Form1.Text1.FontBold = False

End If

If Form1.CommonDialog1.FontItalic = True Then

Form1.Text1.FontItalic = True

Else

Form1.Text1.FontItalic = False

End If

Text1.ForeColor = Form1.CommonDialog1.Color

End Sub

Private Sub Form_Load()

Form1.Text1.Width = Form1.Width - 130

Form1.Text1.Height = Form1.Height

End Sub

Private Sub Form_Resize()

Form1.Text1.Width = Form1.Width - 130

Form1.Text1.Height = Form1.Height

End Sub

Private Sub help1Menu_Click()

Form1.CommonDialog1.HelpCommand = cdlHelpForceFile

Form1.CommonDialog1.HelpFile = "c:\windows\system32\winhelp.hlp"

CommonDialog1.ShowHelp

End Sub

Private Sub newMenu_Click()

If Len(Trim(Text1.Text)) = 0 Then

Form1.Caption = "我的记事本" "--" "未命名"

sFileName = "未命名"

Text1.FontSize = 15

Text1.FontName = "宋体"

Text1.Text = ""

Else

Call saveAsMenu_Click

Form1.Caption = "我的记事本" "--" "未命名"

sFileName = "未命名"

Text1.FontSize = 15

Text1.FontName = "宋体"

Text1.Text = ""

End If

End Sub

Private Sub openMenu_Click() '打开文件代码

If Len(Trim(Text1.Text)) = 0 Then

Form1.Caption = "我的记事本"

Form1.CommonDialog1.Filter = "文本文件|*.txt"

Form1.CommonDialog1.Flags = 4096

Form1.CommonDialog1.Action = 1

If Len(Form1.CommonDialog1.FileName) 0 Then

sFileName = Form1.CommonDialog1.FileName

Form1.Caption = Form1.Caption "--" Form1.CommonDialog1.FileTitle

Open sFileName For Input As #1

Text1.FontSize = 15

Text1.FontName = "宋体"

Do While Not EOF(1)

Line Input #1, Text$

All$ = All$ + Text$ + Chr(13) + Chr(10)

Loop

Text1.Text = All

Close #1

End If

Else

Call saveAsMenu_Click

Form1.Caption = "我的记事本"

Form1.CommonDialog1.Filter = "文本文件|*.txt"

Form1.CommonDialog1.Flags = 4096

Form1.CommonDialog1.Action = 1

If Len(Form1.CommonDialog1.FileName) 0 Then

sFileName = Form1.CommonDialog1.FileName

Form1.Caption = Form1.Caption "--" Form1.CommonDialog1.FileTitle

Open sFileName For Input As #1

Text1.FontSize = 15

Text1.FontName = "宋体"

Do While Not EOF(1)

Line Input #1, Text$

All$ = All$ + Text$ + Chr(13) + Chr(10)

Loop

Text1.Text = All

Close #1

End If

End If

End Sub

Private Sub pasteMenu_Click() '粘贴菜单代码

Text1.Text = Left(Text1.Text, Text1.SelStart) + Clipboard.GetText() + Mid(Text1.Text, Text1.SelStart + Text1.SelLength + 1)

End Sub

Private Sub printMenu_Click()

Form1.CommonDialog1.ShowPrinter

For i = 1 To CommonDialog1.Copies

Printer.Print Text1.Text

Printer.Print Text1.Text

Next

Printer.EndDoc

End Sub

Private Sub saveAsMenu_Click() '另存为菜单代码

If Len(Trim(Text1.Text)) 0 Then

Form1.CommonDialog1.DialogTitle = "保存文件"

Form1.CommonDialog1.InitDir = "D:\"

Form1.CommonDialog1.Filter = "文本文件|*.txt"

Form1.CommonDialog1.Flags = 2

Form1.CommonDialog1.ShowSave

If Len(Form1.CommonDialog1.FileName) 0 Then

sFileName = Form1.CommonDialog1.FileName

Open sFileName For Output As #1

whole$ = Text1.Text

Print #1, whole

Close #1

End If

End If

End Sub

Private Sub saveMenu_Click()

If Len(Trim(Text1.Text)) 0 Then

Form1.CommonDialog1.DialogTitle = "保存文件"

Form1.CommonDialog1.InitDir = "D:\"

Form1.CommonDialog1.FileName = "新建文本"

Form1.CommonDialog1.Filter = "文本文件|*.txt"

Form1.CommonDialog1.Flags = 2

Form1.CommonDialog1.ShowSave

If Len(Form1.CommonDialog1.FileName) 0 Then

sFileName = Form1.CommonDialog1.FileName

Open sFileName For Output As #1

whole$ = Text1.Text

Print #1, whole

Close #1

End If

End If

End Sub

Private Sub statusMenu_Click()

End Sub

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