📄 textboxautopostback.aspx

📁 asp.net技术内幕的书配源码

💻 ASPX

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<%@ Page Language="C#"%>

<script Runat="Server">

void ChangeBox1( object s, EventArgs e ) {
  txtBox1.Text = StrReverse( txtBox1.Text );
  CheckWin();
}

void ChangeBox3( object s, EventArgs e ) {
  txtBox3.Text = StrReverse( txtBox3.Text );
  CheckWin();
}

void CheckWin() {
  if ( txtBox1.Text == "Apple" && txtBox2.Text == "Apple" && txtBox3.Text == "Apple" )
    lblMessage.Text = "You Win!";
}

public string StrReverse(string strString)
{
   char[] strArray = strString.ToCharArray();
   Array.Reverse(strArray);
   return new String(strArray);
}

</Script>

<html>
<head><title>TextboxAutoPostBack.aspx</title></head>
<body>

<form Runat="Server">

Enter the word Apple into all three TextBoxes:

<p>
<asp:TextBox
  ID="txtBox1"
  AutoPostBack="True"
  onTextChanged="ChangeBox3"
  Runat="Server"/>

<p>
<asp:TextBox
  ID="txtBox2"
  AutoPostBack="True"
  OnTextChanged="ChangeBox1"
  Runat="Server"/>

<p>
<asp:TextBox
  ID="txtBox3"
  AutoPostBack="True"
  OnTextChanged="ChangeBox3"
  Runat="Server"/>

<p>
<asp:Label
  ID="lblMessage"
  Runat="Server" />


</form>

</body>
</html>

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