Searching text in ASP.net

[jty202]

I use a the function Instr() in VB6 to search for a search-string in String
var. It returns the position of the found search-string.

Is there such a funtion in ASP.net?

[Stuart A Hill]

Re: Searching text in ASP.net

Hi,

You could try this:

Dim findIt as String = "The String"
Dim startPosition as Integer
Dim position as integer = findIt.IndexOf( "String you are looking in",
startPosition)

Hope this helps.

Stuart
MCSD, MCT

More Examples from MSDN:

[Visual Basic]
' Sample for String.IndexOf( Char, Int32)
Imports System

Class Sample
Public Shared Sub Main()

Dim br1 As String =
"0----+----1----+----2----+----3----+----4----+----5----+----6----+-"
Dim br2 As String =
"01234567890123 456789012345678 901234567890123 456789012345678 90123456"
Dim str As String = "Now is the time for all good men to come to the
aid of their party."
Dim start As Integer
Dim at As Integer

Console.WriteLi ne()
Console.WriteLi ne("All occurrences of 't' from position 0 to {0}.",
str.Length - 1)
Console.WriteLi ne("{1}{0}{2}{0 }{3}{0}", Environment.New Line, br1, br2,
str)
Console.Write(" The letter 't' occurs at position(s): ")

at = 0
start = 0
While start < str.Length AndAlso at > - 1
at = str.IndexOf("t" c, start)
If at = - 1 Then
Exit While
End If
Console.Write(" {0} ", at)
start = at + 1
End While
Console.WriteLi ne()
End Sub 'Main
End Class 'Sample
'
'This example produces the following results:
'
'All occurrences of 't' from position 0 to 66.
'0----+----1----+----2----+----3----+----4----+----5----+----6----+-
'01234567890123 456789012345678 901234567890123 456789012345678 90123456
'Now is the time for all good men to come to the aid of their party.
'
'The letter 't' occurs at position(s): 7 11 33 41 44 55 64
'
'

[C#]
// Sample for String.IndexOf( Char, Int32)
using System;

class Sample {
public static void Main() {

string br1 =
"0----+----1----+----2----+----3----+----4----+----5----+----6----+-";
string br2 =
"01234567890123 456789012345678 901234567890123 456789012345678 90123456";
string str = "Now is the time for all good men to come to the aid of
their party.";
int start;
int at;

Console.WriteLi ne();
Console.WriteLi ne("All occurrences of 't' from position 0 to {0}.",
str.Length-1);
Console.WriteLi ne("{1}{0}{2}{0 }{3}{0}", Environment.New Line, br1, br2,
str);
Console.Write(" The letter 't' occurs at position(s): ");

at = 0;
start = 0;
while((start < str.Length) && (at > -1))
{
at = str.IndexOf('t' , start);
if (at == -1) break;
Console.Write(" {0} ", at);
start = at+1;
}
Console.WriteLi ne();
}
}
/*
This example produces the following results:

All occurrences of 't' from position 0 to 66.
0----+----1----+----2----+----3----+----4----+----5----+----6----+-
012345678901234 567890123456789 012345678901234 567890123456789 0123456
Now is the time for all good men to come to the aid of their party.

The letter 't' occurs at position(s): 7 11 33 41 44 55 64


"jty202" <jty202@gmail.c om> wrote in message
news:e%232sNsN$ EHA.2104@TK2MSF TNGP14.phx.gbl. ..[color=blue]
>I use a the function Instr() in VB6 to search for a search-string in String
> var. It returns the position of the found search-string.
>
> Is there such a funtion in ASP.net?
>
>[/color]

[Matt Berther]

Re: Searching text in ASP.net

Hello jty202,

string s = "Foo";
int pos = s.IndexOf("o");

Its a function of the string object which is part of the .NET framework,
not just ASP.NET.

--
Matt Berther

http://www.mattberther.com

[color=blue]
> I use a the function Instr() in VB6 to search for a search-string in
> String var. It returns the position of the found search-string.
>
> Is there such a funtion in ASP.net?
>[/color]

[Cor Ligthert]

Re: Searching text in ASP.net

jty,

As far as I know is the Instr in VB6 the same as in VBNet
(You can use it as well in C# when you set a reference to the
Microsoft.Visua lBasic namespace)

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vblr7/html/vafctinstr.asp

I hope this helps?

Cor