Wednesday, April 24, 2013

How to search textbox value on google


Introduction

Begin by adding a using statement for System.text library, since StringBuilder is located in the System.Text namespace. Use StringBuilder to modify a string without creating a new object or concatenating many strings together in a loop.

In this article I will show how to search using Google for a value in a TextBox using ASP.NET.

Complete Program
Search_Value.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;

public partial class Search_Value : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        try
        {
            string text = string.Empty;
            StringBuilder txtaddress = new StringBuilder();
            txtaddress.Append("https://www.google.com/search?q=");
            if (searchtxt.Text != string.Empty)
            {
                text=searchtxt.Text.Replace(' ','+');
                txtaddress.Append(text+' '+ '+');
            }
            string url = txtaddress.ToString();
            Response.Redirect(url, false);
        }
        catch (Exception ex)
        {
            Response.Redirect(ex.ToString());
        }
    }
}

Search_Value.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Search_Value.aspx.cs" Inherits="Search_Value" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div style="border-style: double; border-width: medium; padding: inherit; margin: inherit; height: 194px;
    width: 349px; background-color: #808080; visibility: visible;">  
        <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
        <asp:Label ID="Label1" runat="server" Font-Bold="True" Font-Italic="True" Font-Size="Large"
        ForeColor="Blue" Text="Search a value in Google"></asp:Label>
        <br />
        <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Label ID="Label2" runat="server" Text="Enter Search Text"></asp:Label>
&nbsp;
        <asp:TextBox ID="searchtxt" runat="server"></asp:TextBox>
        <br />
        <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button1" runat="server" Font-Bold="True" OnClick="Button1_Click" Text="Search" />
        <br /><br /><br /><br /><br /><br /><br /><br /></div><br />
    </form>
</body>
</html>

Output

Animation1.gif