ASP.Net Textbox

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ASP.NET Web Forms TextBox

This is an input control which is used to take user input. To create TextBox either we can write code or use the drag and drop facility of visual studio IDE.

This is server side control, asp provides own tag to create it. The example is given below.

< asp:TextBoxID="TextBox1" runat="server" ></asp:TextBox>

Server renders it as the HTML control and produces the following code to the browser.

<input name="TextBox1" id="TextBox1" type="text">

This control has its own properties that are tabled below.

Property	Description
AccessKey	It is used to set keyboard shortcut for the control.
TabIndex	The tab order of the control.
BackColor	It is used to set background color of the control.
BorderColor	It is used to set border color of the control.
BorderWidth	It is used to set width of border of the control.
Font	It is used to set font for the control text.
ForeColor	It is used to set color of the control text.
Text	It is used to set text to be shown for the control.
ToolTip	It displays the text when mouse is over the control.
Visible	To set visibility of control on the form.
Height	It is used to set height of the control.
Width	It is used to set width of the control.
MaxLength	It is used to set maximum number of characters that can be entered.
Readonly	It is used to make control readonly.

Example

// WebControls.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebControls.aspx.cs" 
Inherits="WebFormsControlls.WebControls" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Label ID="labelId" runat="server">User Name</asp:Label>
<asp:TextBox ID="UserName" runat="server" ToolTip="Enter User Name"></asp:TextBox>
        </div>
        <p>
        <asp:Button ID="SubmitButton" runat="server" Text="Submit" OnClick="SubmitButton_Click" />
        </p>
        <br />                 
    </form>
     <asp:Label ID="userInput" runat="server"></asp:Label>
</body>
</html>

Code Behind

// WebControls.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebFormsControlls
{
    public partial class WebControls : System.Web.UI.Page
    {
        protected void SubmitButton_Click(object sender, EventArgs e)
        {
            userInput.Text = UserName.Text;
        }
    }
}

This is a property window of the TextBox control.

Output:

It produces the following output.

It displays user input, when user submits the input to the server. The following screen shot taking and showing user input.

Next TopicASP.NET Button

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