vb.net记事本的简单介绍

vb.net编写记事本richtextbox.find方法第二个参数值是介于0与0之间是什么意思？

真巧，其实我也在写记事本哦，我写出来了查找的代码，你参考下

Private Sub 查找ToolStripMenuItem_Click_1(sender As Object, e As EventArgs) Handles 查找ToolStripMenuItem.Click

'Dim fp As String

'fp = InputBox("请输入您要找的字符串", "寻找")

'If fp = "" Then

' MsgBox("您未输入字符串或者已取消！", MsgBoxStyle.Information)

'Else

' If InStr(RichTextBox1.Text, fp) Then

' Dim lines() As String = RichTextBox1.Lines

' Dim index As Integer = RichTextBox1.Find(fp, 0, RichTextBoxFinds.MatchCase)

' Dim targetline As Integer = RichTextBox1.GetLineFromCharIndex(index)

' Else

' MsgBox("未找到您输入的字符串！", MsgBoxStyle.Critical)

' End If

'End If

fp = InputBox("请输入您要找的字符串", "寻找")

If fp = "" Then

MsgBox("您未输入字符串或者已取消！", MsgBoxStyle.Information)

Else

If InStr(RichTextBox1.Text, fp) Then

Dim start As Integer = RichTextBox1.Find(fp, 0, RichTextBoxFinds.MatchCase)

If start = 0 Then

RichTextBox1.SelectionStart = start

RichTextBox1.SelectionLength = fp.Length

starta = start + fp.Length + 1

Else

End If

Else

MsgBox("未找到您输入的字符串！", MsgBoxStyle.Critical)

End If

End If

End Sub

你试一下，我这里是可以运行的

相关问答

Q1: VB.NET中的所有数据文件均可用记事本打开?

这个啊，呵呵，应该不难吧先找到你要打开的应用程序的文件然后用一个调用代码：System.Diagnostics.Process.Start("C:\WINDOWS\system32\notepad.exe")这是要开记事本的System.Diagnostics.Process.Start("C:\WINDOWS\system32\calc.exe")这是打开计算器的应该也可以把这两个应用程序复制到你的程序的默认目录下，就是BIN下吧！呵呵，试试！！要给我加分哦！！！

Q2: vb .net 程序怎么默认打开txt记事本文件？

楼下的根本不对。exe右键是没有“打开方式”的，也没必要因为这个问题而还原系统。把exe设置为直接运行，方法：新建一个txt文件，输入ftype exefile="%1" %* ，保存，把扩展名改为bat，双击这个文件，就好了。

Q3: VB.net怎么才能实现记事本中的查找上一个的功能(在Richtextbox中)？

查找一次后记入查找内容的位置，百查找下一个功能度 这时候的开始位置就是刚才查找内容的位置加上查找内容的长度，版突出显示其实就是选权定文本，富文本框有SelectionStart，SelectionLength 两个属性

Q4: 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 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 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 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 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

Q5: 怎样在VB .NET中调用记事本和计算器

这个啊，呵呵，应该不难吧

先找到你要打开的应用程序的文件

然后用一个调用代码：

System.Diagnostics.Process.Start("C:\WINDOWS\system32\notepad.exe")

这是要开记事本的

System.Diagnostics.Process.Start("C:\WINDOWS\system32\calc.exe")

这是打开计算器的

应该也可以把这两个应用程序复制到你的程序的默认目录下，就是BIN下吧！

呵呵，试试！！要给我加分哦！！！

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