Definition and Usage
定义和用法

The TextBox control is used to create a single-line input box on a mobile device.
TextBox[文本框] 控件的作用是：在一个移动设备上创建一个单行的文本输入框。

The text can be specified by the text attribute or as the content of the TextBox element. If the text is specified in both ways, the inner text takes precedence. However, if the text is programmatically set, the inner text is replaced with this text.
该文本可以通过文本属性指定，或者作为TextBox元素的内容来指定。如果同使用上述两种方法来指定，那么将优先处理内置文本。然而，如果文本使用程序自动设置的，那么内置文本将被该输入文本所取代。

Properties
属性

Example 1
案例1

The following example will declare two forms in an .aspx file. The first form has a label with the text "Age?", a textbox to input the age, and a submit button. The second form is activated by the submit button on the first form, and displays a response:
下面的案例将在 .aspx 文件中声明两张表单。第一张表单的标签文本是“Age”，并包含“Age” 标签所对应的文本框以及一个提交按钮。第二张表单将通过第一张表单的提交按钮激活，并显示对应的回应信息：

<%@ Page
Inherits="System.Web.UI.MobileControls.MobilePage"%>
<%@ Register TagPrefix="Mobile"
Namespace="System.Web.UI.MobileControls"
Assembly="System.Web.Mobile" %>

<script runat="server">
Dim age
Sub AgeClick(sender As Object, e As EventArgs)
age=text1.Text
ActiveForm=Form2
End Sub
Sub Form2_Activate(sender As Object,e As EventArgs)
  message.Text="You are " & age & " years old"
End Sub
</script>

<Mobile:Form id="form1" runat="server">

  <Mobile:Label runat="server">Age?</Mobile:Label>
  <Mobile:TextBox runat="server" id="text1" />
  <Mobile:Command runat="server" OnClick="AgeClick"

  Text="Submit" />
</Mobile:Form>

<Mobile:Form id="form2" runat="server"
  OnActivate="Form2_Activate">

  <Mobile:Label runat="server" id="message" />
</Mobile:Form>