ASP.NET(vb.net) & Search and Highlight Text file

Author: admin | Posted: 14-06-2010 | Category: ASP.NET(vb.net) & File/Folder Object

ASP.NET(vb.net) & Search and Highlight Text file - The in this tutorial, you’ll learn and example scripts how to Search and Highlight Text file using by ASP.NET scripts.

ShotDev Focus:
- ASP.NET(vb.net) & Search and Highlight Text file

Example

AspNetSearchTextFile2.aspx

<%@ Import Namespace="System.IO"%>
<%@ Page Language="VB" %>
<script runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
Dim StrWer  As StreamReader
Dim StrBui As StringBuilder
Dim strLine As String

Dim SearchText As String = "2008"
Dim intLine As Integer
Dim strNum As String

StrWer  = File.OpenText(Server.MapPath("MyFiles/") & "shotdev.txt")
StrBui = New StringBuilder()

Do Until StrWer.EndOfStream
intLine = intLine + 1
strLine = StrWer.ReadLine()
If InStr(strLine, SearchText) > 0 Then
strLine = Replace(strLine, SearchText, _
"<span style=""background-color:red;"">" & SearchText & "</span>")
strNum = strNum & intLine & ","
End If
StrBui.AppendLine(strLine & "<br>")
Loop

Me.lblText1.Text = StrBui.ToString()
Me.lblText2.Text = "Found Line : " &strNum.ToString

StrBui = Nothing
StrWer.Close()

End Sub
</script>
<html>
<head>
<title>ShotDev.Com Tutorial</title>
</head>
<body>
<form runat="server">
<asp:Label id="lblText1" runat="server"></asp:Label><br />
<asp:Label id="lblText2" runat="server"></asp:Label><br />
</form>
</body>
</html>

Screenshot