TextBox.TextChanged Event
.NET Framework 4
Occurs when the user changes the text of a TextBox. This API is obsolete. For information about how to develop ASP.NET mobile applications, see the www.asp.net/mobile Web site.
Assembly: System.Web.Mobile (in System.Web.Mobile.dll)
The following example demonstrates how to use the TextChanged event to change the items in a SelectionList.
<%@ Page Language="C#" Inherits="System.Web.UI.MobileControls.MobilePage" %> <%@ Register TagPrefix="mobile" Namespace="System.Web.UI.MobileControls" Assembly="System.Web.Mobile" %> <script runat="server"> void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { // Add items to the list SelectionList1.Items.Add(new MobileListItem("Verify transactions","Done")); SelectionList1.Items.Add(new MobileListItem("Check balance sheet","Scheduled")); SelectionList1.Items.Add(new MobileListItem("Call customer", "Done")); SelectionList1.Items.Add(new MobileListItem("Send checks", "Pending")); SelectionList1.Items.Add(new MobileListItem("Send report", "Pending")); SelectionList1.Items.Add(new MobileListItem("Attend meeting", "Scheduled")); // Show all items in list SelectionList1.Rows = SelectionList1.Items.Count; } } void TextChanged(object sender, EventArgs e) { // Called during PostBack, if changed string task = TextBox1.Text; string status = TextBox2.Text; if (task.Length > 0 && status.Length > 0) { MobileListItem li = new MobileListItem(task, status); // Remove the item if it exists if (SelectionList1.Items.Contains(li)) SelectionList1.Items.Remove(li); else // Add the item if it does not exist SelectionList1.Items.Add(li); // Clear the text boxes TextBox1.Text = String.Empty; TextBox2.Text = String.Empty; } // Display all items. SelectionList1.Rows = SelectionList1.Items.Count; } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <body> <mobile:Form id="Form1" runat="server"> <mobile:Label Id="Label1" runat="server"> Create a new Task with Status</mobile:Label> <mobile:SelectionList runat="server" BreakAfter="true" SelectType="ListBox" id="SelectionList1" /> <mobile:Label Id="Label2" runat="server" Text="Enter the Task name" /> <mobile:TextBox runat="server" id="TextBox1" OnTextChanged="TextChanged" /> <mobile:Label Id="Label3" runat="server" Text="Enter the Task status" /> <mobile:TextBox runat="server" id="TextBox2" /> <mobile:Command ID="Command1" runat="server" Text="Submit" /> </mobile:Form> </body> </html>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
