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VB.NET ASP.NET InStr() Source Code Syntax Example

Description: Illustrates using InStr with Source Code Syntax Example in VB.NET ASP.NET.

Example Webform Code:

< %@ Page Language="VB" AutoEventWireup="false" CodeFile="InStr.aspx.vb" Inherits="InStr" %>
 
< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h1><asp:label ID="Label1" runat="server" Text="Label"></asp:label> </h1>
        <asp:label ID="Label2" runat="server" Text="Label"></asp:label><br />
 
 
    </div>
    </form>
</body>
</html>

Example Code Behind:

Imports System
Imports System.IO
Imports System.Data
 
 
 
 
' This example is from http://idealprogrammer.com
' It shows how you can use InStr syntax in VB.NET ASP.NET
'****************************************************************************************
' Example #1: InStr(startIndex, string1, string2)
' Returns an integer that represents the position of the first occurrence of 
' the second string in the first string. The search starts at the specified
' position in the string.  If the string is not found, the result is 0
'****************************************************************************************
 
Partial Class InStr
    Inherits System.Web.UI.Page
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        Label1.Text = "InStr(startIndex, string1, string2)"
 
        Dim strField1 As String = " This "
        Dim strField2 As String = "is"
 
 
 
 
        Label2.Text = Microsoft.VisualBasic.InStr(1, strField1, strField2) 'Returns 4 - spaces are counted
 
 
    End Sub
End Class

Example Connection String: