In this blog post, you will learn about to get the value of input javascript and how to get Html textbox value in ASP.Net C# code behind aspx.cs page. Previously I have explained How to check if dropdown list contains value in C#, Facebook Style Homepage and Login Page Design using Html and CSS.
There are two ways we can access the HTML TextBox value in aspx code-behind:-
- Using Request Form collection and name property.
- Using runat = “server” property.
How to get Html textbox value in ASP.Net C#
The HTML <input> element is used to create interactive controls for web-based forms in order to accept data from the user. To get the value of textbox in javascript from Html the tag should have an attribute called [NAME]. Find the below source code:-
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.aspx.cs" Inherits="index" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>get value of input javascript</title>
</head>
<body>
<form id="form1" runat="server">
<h2>How to get html textbox value in asp.net</h2>
<div>
<input type="text" placeholder="First Name" name="_firstname" /><br />
<input type="text" placeholder="Last Name" name="_lastname" /><br />
<br />
<asp:Button ID="btnShow" runat="server" Text="Show" OnClick="btnShow_Click" />
<br />
<br />
<asp:Label ID="result" ForeColor="Red" runat="server"></asp:Label>
</div>
</form>
</body>
</html>Default.aspx.cs
using System;
using System.Web.UI;
public partial class index : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnShow_Click(object sender, EventArgs e)
{
string firstName = Page.Request.Form["_firstname"].ToString();
string lastname = Page.Request.Form["_lastname"].ToString();
result.Text = firstName + " " + lastname;
}
}Conclusion
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