📄 ch13-04-04.aspx
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<%@ Import Namespace="System.IO" %>
<Html>
<Head>
<Title>Ch13-04-04.aspx 如何写入一行文字</Title>
<Script Language="VB" Runat="Server">
Sub Button1_Click(Obj As Object, E As EventArgs)
Dim FilePath As String = Server.Mappath(Path1.Text)
Dim Files As New FileInfo(FilePath)
Dim strA As String
' 在这里设置写入的文字内容
strA = "在文件的最后面附加一行文字"
Dim SrWriter As StreamWriter = Files.AppendText()
' 写入一行文字
SrWriter.WriteLine(strA)
SrWriter.Close()
' 逐行读取文件的内容
Dim SrReader As StreamReader = New StreamReader(FilePath)
' 搜索流文件的起始索引
SrReader.BaseStream.Seek(0, SeekOrigin.Begin)
' 如果位置索引值为 -1时，表示已经读取到文件尾
While (SrReader.Peek() > -1)
Response.Write("读取的文字为：" & SrReader.ReadLine() & "<BR>")
End While
SrReader.Close()
End Sub
</Script>
</Head>
<Body>
<Form Runat="Server">
文件夹名称：
<asp:TextBox ID="Path1" Columns="50"
Runat="Server" /><P>
<asp:Button ID="Button1" Text="写入一行文字"
OnClick="Button1_Click" Runat="Server" />
</Form>
<Span ID="Show1" Runat="Server" />
</Body>
</Html>
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