关于vb.net自制记事本的信息

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关于VB.NET制作记事本自动保存的问题

分类: 电脑/网络程序设计其他编程语言

问题描述:

我用的是Timer计时器：

如何将程序控制住，让它第一次发现没保存后，只击活一次提示保存，然后使用修改后的保存路径：（代码如下）

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick

'如何将程序控制住，让它第一次发现没保存后，只击活一次提示保存，然后使用修改后的保存路径

If SaveFileDialog1.FileName = "" Then

If SaveFileDialog1.ShowDialog Then

rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)

End If

Else

'如果已经选择了要保存的文件名，则保存文本到文件中

rtbox.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)

End If

End Sub

————————————————————

此代码执行后变成死循环。

解析:

经过我的潜心修炼问题终于是解决了.请看代码

Imports System.IO

Private strFileName As String = "myRTFdoc.txt"

Private flgFirst As Boolean = True

Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick

'如何将程序控制住，让它第一次发现没保存后，只击活一次提示保存，然后使用修改后的保存路径

Call zc()

End Sub

Private Sub zc()

'Timer2.Stop()

With SaveFileDialog1

.DefaultExt = "txt"

.FileName = strFileName

.Filter = "Text files(*.txt)|*.txt|All files(*.*)|*.*"

.FilterIndex = 1

.InitialDirectory = "c:\"

.OverwritePrompt = True

.Title = "Save Reminding"

End With

'Timer2.Enabled = False

If flgFirst = True Then

If SaveFileDialog1.ShowDialog = DialogResult.OK Then

strFileName = SaveFileDialog1.FileName

Dim objWriter As StreamWriter = New StreamWriter(strFileName, False)

objWriter.Write(rtbox.Text)

objWriter.Close()

objWriter = Nothing

End If

flgFirst = False

'Timer2.Enabled = True

' Timer2.Start()

Else

'flg= second

Dim objWriter As StreamWriter = New StreamWriter(strFileName, False)

objWriter.Write(rtbox.Text)

objWriter.Close()

objWriter = Nothing

End If

'Timer2.Enabled = True

'Timer2.Start()

End Sub

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

Timer2.Enabled = True

' zc()

End Sub

知道问题在哪里嘛?我调试了确实是"死循环"、其实不是真正的死循环、是time tick事件你设定的时间太短了.估计只设置了1-5s左右.那么程序运行还需要时间.所以他就不停地调用timetick时间.你的savedialog对话框根本来不急弹出来.

所以建议你把timer的interval的值设置高点最好12-15秒触发一次.

当然我想还有其他的方法、还没有彻底取研究下.

比如stop 什么、那还需要时间.

至少目前我的方法是可以了.

我设置的12s P4. 3.0 1G 内存跑下我的程序如果 F10(F8)慢点的话就来不及了.

另为把你的程序小改了下、应该可以满足你的要求了.

相关问答

Q1: 怎样用vb.net做记事本？？

简单的用TextBox 或者RichTextBox 控件啊至于文件可以存为ANSIC编码的文本文件或者数据库存取也行啊

Q2: 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 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.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 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 Sub

Private Sub statusMenu_Click()

End Sub

Q3: 怎么用VB.NET做一个记事本

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

OpenFileDialog1.ShowDialog()

RichTextBox1.LoadFile(Me.OpenFileDialog1.FileName, RichTextBoxStreamType.PlainText)

End Sub

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

Dim fname As String

Me.SaveFileDialog1.ShowDialog()

fname = Me.SaveFileDialog1.FileName

If (fname "") Then

If (Me.OpenFileDialog1.FilterIndex = 1) Then

Me.RichTextBox1.SaveFile(fname, RichTextBoxStreamType.PlainText)

Else

Me.RichTextBox1.SaveFile(fname, RichTextBoxStreamType.RichText)

End If

End Sub

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click

Me.SaveFileDialog2.ShowDialog()

If (Me.OpenFileDialog1.FileName "") Then

If (Me.OpenFileDialog1.FilterIndex = 1) Then

Me.RichTextBox1.SaveFile(Me.SaveFileDialog2.FileName, RichTextBoxStreamType.PlainText)

Else

Me.RichTextBox1.SaveFile(Me.SaveFileDialog2.FileName, RichTextBoxStreamType.RichText)

End If

End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click

Me.FontDialog1.Font = Me.RichTextBox1.SelectionFont

If (Me.FontDialog1.ShowDialog() = Me.DialogResult.OK) Then

Me.RichTextBox1.SelectionFont = Me.FontDialog1.Font

End If

End Sub

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click

Me.ColorDialog1.Color = Me.RichTextBox1.SelectionColor

If (Me.ColorDialog1.ShowDialog() = Me.DialogResult.OK) Then

Me.RichTextBox1.SelectionColor = Me.ColorDialog1.Color

End If

End Sub

Private Sub 打开ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 打开ToolStripMenuItem.Click

Try

Dim str As String

Dim typel As System.Windows.Forms.RichTextBoxStreamType

OpenFileDialog1.ShowDialog()

str = OpenFileDialog1.FileName

RichTextBox1.LoadFile(str, RichTextBoxStreamType.PlainText)

Catch ex As Exception

End Try

End Sub

Private Sub 保存ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 保存ToolStripMenuItem.Click

Me.SaveFileDialog1.ShowDialog()

If (Me.SaveFileDialog1.FileName "") Then

If (Me.OpenFileDialog1.FilterIndex = 1) Then

Me.RichTextBox1.SaveFile(Me.SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)

Else

Me.RichTextBox1.SaveFile(Me.SaveFileDialog1.FileName, RichTextBoxStreamType.RichText)

End If

End Sub

Private Sub 另存为ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 另存为ToolStripMenuItem.Click

Me.SaveFileDialog1.ShowDialog()

If (Me.OpenFileDialog1.FileName "") Then

If (Me.OpenFileDialog1.FilterIndex = 1) Then

Me.RichTextBox1.SaveFile(Me.SaveFileDialog1.FileName, RichTextBoxStreamType.PlainText)

Else

Me.RichTextBox1.SaveFile(Me.SaveFileDialog1.FileName, RichTextBoxStreamType.RichText)

End If

End Sub

Private Sub 退出ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 退出ToolStripMenuItem.Click

End

End Sub

Private Sub 字体ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 字体ToolStripMenuItem.Click

Me.FontDialog1.Font = Me.RichTextBox1.SelectionFont

If (Me.FontDialog1.ShowDialog() = Me.DialogResult.OK) Then

Me.RichTextBox1.SelectionFont = Me.FontDialog1.Font

End If

End Sub

Private Sub 颜色ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles 颜色ToolStripMenuItem.Click

Me.ColorDialog1.Color = Me.RichTextBox1.SelectionColor

If (Me.ColorDialog1.ShowDialog() = Me.DialogResult.OK) Then

Me.RichTextBox1.SelectionColor = Me.ColorDialog1.Color

End If

End Sub

Private Sub SaveFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SaveFileDialog1.FileOk

End Sub

End Class

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