The Ajax timer seems to have a problem updating a panel what contains a text box that has the characters "<br>\n". Attached is the source code for a very simple page a single multi-line text box where the timer code-behind just assigns the textbox the string "<br>\n". When run, the second update will cause an 500 error from the server.
This error does not happen when the text is something else, say "Hello World".
I assume that the problem is that the sequence "<br>\n" in the text box causes the timer Java Script to break somehow. Anyone knows oh to solve this problem? I am using Ajax 1.0 and the Visual Studio Development Server.
<%@dotnet.itags.org. Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Untitled Page</title></head><body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine"></asp:TextBox> <asp:Timer ID="Timer1" runat="server" Interval="5000" OnTick="Timer1_Tick"> </asp:Timer> </ContentTemplate> </asp:UpdatePanel> </form></body></html>
The code behind for the time update is:
protected void Timer1_Tick(object sender, EventArgs e) { TextBox1.Text ="<br>\n;"; } Ivan.
I am sorry, the code for the post got mangled but the editor. The code behind for the time update should be:
public partialclass _Default : System.Web.UI.Page {protected void Page_Load(object sender, EventArgs e) { }protected void Timer1_Tick(object sender, EventArgs e) { TextBox1.Text = "<br>\n"; }}Apparently, the string <br> is detected as a potentially harmfull string. One solution is to HTML encode the string. However, I do need to display the string <br> in the text box, not <br>. The user must be able to edit the HTML code that we will use.
Ivan.
Apparently, the string <br> is detected as a potentially harmfull string. One solution is to HTML encode the string. However, I do need to display the string <br> in the text box, not <br>. The user must be able to edit the HTML code that we will use.
Ivan.
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