asp.net methods for dynamically generating controls using the values of text boxes _ Practical Tips

See a netizen, have a forum to ask, dynamic build CheckBox control, enter a "flower" word in the text box, click "Build" button, will generate a checkbox below, its Text property is "flower". Then enter a "Bird", click the button, will generate a second CheckBox control, the Text property is "Bird" ...

The Insus.net solution is simply to save every value you enter in the text box, and then bind the data to a CheckBoxList control .

In detail, first create an object:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Web;
<summary>
///Summary description for letter
///</summary>
namespace insus.net
{ public class Letter
{
private string _name;
public string Name
{get
{_name;}
set {_name = value;}
}
Public letter ()
{
} public letter
(string name)
{
this._name = name;
}
}

Create an entity that you can develop into operational, such as adding, editing, updating, deleting or acquiring datasets, etc. ...

In this example, Insus.net only two methods for adding and fetching data:

Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Web;
<summary>
///Summary description for letterentity
///</summary>
namespace Insus.net
{public
class letterentity
{
private list<letter> _letter = new list<letter> ();
public void Add (letter L)
{
this._letter.add (l);
}
Public ienumerable<letter> letters
{get
{return
this._letter
}
}}

Everything is ready, only the implementation of ASPX, create an ASPX Web page:

In the ASPX.cs code page, you can implement the required functionality:

 using System; using System.Collections.Generic; using System.Linq; using System.Web; u
Sing System.Web.UI;
Using System.Web.UI.WebControls;
Using Insus.net;  Public partial class Default2:System.Web.UI.Page {letterentity le = new letterentity (); protected void Page_Load (object sender, EventArgs e) {if (!
IsPostBack) {data_binding ();} le = Temporaryletters; private void Data_binding () {this. Checkboxlist1.datasource = Le.
Letters; This.
Checkboxlist1.datatextfield = "Name"; This.
Checkboxlist1.databind (); } protected void button1_click (object sender, EventArgs e) {Letter L = new Letter (); if (!string. IsNullOrEmpty (this. TextBox1.Text.Trim ()) L.name = this.
TextBox1.Text.Trim (); Le.
ADD (l);
Temporaryletters = le;
Data_binding ();  Public letterentity Temporaryletters {get {if (session["letterentity"] = = null) return to new letterentity (); else return (letterentity)
session["Letterentity"];
set {session["letterentity"] = value;}} } 

You may find it very complicated because of the problem of involved in storing data. If you put the data directly into the database, you can in the above #6 steps to fill in the value of the database, in the #4 step, to read the database data binding to the CheckBoxList control.

The above is a small set to introduce the ASP.net in the use of text box values to dynamically generate control of the method of knowledge, I hope to help you, if you have any questions please give me a message, small series will promptly reply to everyone. Here also thank you very much for the cloud Habitat Community website support!