How to get client’s languages using Asp.net
Recently I have fall in a situation that I need the clients language for fulfill the business requirement. I have found lots of resources about it. Today I want to share with you how to get client’s language using asp.net.
You can get the language from Browser using
HttpRequest.Request.ServerVariables(“HTTP_ACCEPT_LANGUAGE”).
or, You can also use this
HttpRequest.UserLanguages();
Here HttpRequest.UserLanguages return a array of languages,so to retrieve the language you can use index of array like,
HttpRequest.UserLanguages(0);
But there are some differents between them.HttpRequest.UserLanguages() returns a sorted array of language preferences, whereas the Request.ServerVariables(“HTTP_ACCEPT_LANGUAGE”) returns a (comma-separated) string. In other words, HttpRequest.UserLanguages appears to take the value of Request.ServerVariables(“HTTP_ACCEPT_LANGUAGE”).
There are another way you can get it from CulturalInfo class.
CultureInfo ci = System.Threading.Thread.CurrentThread.CurrentUICulture;
This will give you what is set in the browser as the current language.But you need to set UICulture=”Auto” on page or global level before using System.Threading.Thread.CurrentThread.CurrentUICulture. Otherwise it will not give you the expected result. It is really a more direct way to get the client’s culture.
Dynamically add control in asp.net
Recently I have faced a problem when try to dynamically add controls in asp.net, like this,
In test.aspx page
<body>
<form id=”form1″ runat=”server”>
<div>
<asp:PlaceHolder ID=”PlaceHolder1″ runat=”server” > </asp:PlaceHolder>
</div>
</form>
</body>
In test.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
Button btn = new Button();
btn.ID = “btnSave”;
this.PlaceHolder1.Controls.Add(btn);
}
Problem:
It is working fine but when I press any button I mean any post back occur It disappears.
After search for a long time I got the proper solution, now I would like to share this with you.
Solution:
To avoid this problem one should dynamically load the controls during Page_Init because we may want to hook up our events with proper handler at an early stage.
protected void Page_Init(object sender, EventArgs e)
{
Button btn = new Button();
btn.ID = “btnSave”;
btn.Click+=new EventHandler(btn_Click);
this.PlaceHolder1.Controls.Add(btn);
}
Some Tips:
In addition I have got more tips on it,
Control’s Lify cycle:
1.Initialization
2.Load view state
3.Process postback data
4.Load
5.Send postback change notifications
6.Handle postback events
7.Prerender
8.Save state
9.Render
10.Dispose
11.Unload
You will get details from here:http://msdn.microsoft.com/en-us/library/aa719775%28VS.71%29.aspx
1.During Page_Init you cannot assign dynamic control property,because in Page_Init event Initialization happens before loadViewState in control’s life cycle.The value assigned to the properties during Initialization will simply get overwritten by the ViewState values.
2.If you are expecting your ViewState to retain after the postback, always assign same ID to the dynamic control,if you use like this,
protected void Page_Init(object sender, EventArgs e)
{
TextBox t = new TextBox();
t.ID = Guid.NewGuid().ToString();
this.form1.Controls.Add(t);
}
It will not work. You should use same id or fixed id ,
like this, t.ID=”txtName”;
Use Master page tag in Content page of asp.net
How to use the <body> onclick from content page in asp.net?
Master page is introducing from asp.net 2.0, this is the main layout page for whole application content page just inherit it.
So that,we get the <body> tag only in Master page,in content page there is no body tag. But I need to use this body tag from content page.
After search it I found a solution in asp.net forum. Original link: http://forums.asp.net/t/1062445.aspx
Sample:
<%@ Page Language=”C#” MasterPageFile=”~/MasterPage.master” AutoEventWireup=”true” CodeFile=”Default.aspx.cs” Inherits=”Default” Title=”Test Page” %>
<asp:Content ID=”Content1″ ContentPlaceHolderID=”ContentPlaceHolder1″ Runat=”Server”>
<script type=”text/javascript”>
function ClearBox()
{
var divBoxID=document.getElementById(‘BoxDiv’);
divBoxID.style.display=’none’;
}
document.body.onclick= ClearBox;
</script>
<input id=”Button1″ type=”button” value=”button” />
</asp:Content>
For more info pls visit:
http://msdn.microsoft.com/en-us/library/7a9d6h4f.aspx
http://forums.asp.net/t/1225951.aspx
Request format is unrecognized for URL unexpectedly ending
Today I want to share with you a new problem which I had faced yesterday.
Problem:
It was about web service related error. I have used Web Method() in my application to fill up a country dropdown. Everything was going well but when I had used this web method it showed me an error like this:
System.InvalidOperationException: Request format is unrecognized for URL unexpectedly ending in ‘/GetCountyList’.
Information:
After googling, I have found the solution.
This error was occured because GET and POST are disabled by default in ASP.NET 2.0 and greater.
Now I would like to share this with you. From msdn I have got some relative information which may help you to get understand clearly.
The .NET-connected Web services support HTTP GET, HTTP POST and SOAP protocols. By default, in .NET Framework 1.0, all three protocols are enabled. By default, in .NET Framework 1.1 or greater, HTTP GET and HTTP POST are both disabled. This is for security reasons.
Applications that use HTTP GET or HTTP POST to invoke a Web service fail when the Web service is upgraded to .NET Framework 1.1 or greater. These applications receive a exception: System.InvalidOperationException: Request format is unrecognized.
Solution:
HTTP GET and HTTP POST may be enabled by editing the Web.config file for the vroot where the Web service resides. The following configuration enables both HTTP GET and HTTP POST:
<configuration>
<system.web>
<webServices>
<protocols>
<add name=”HttpGet”/>
<add name=”HttpPost”/>
</protocols>
</webServices>
</system.web>
</configuration>
For more info pls visits these links:
http://support.microsoft.com/default.aspx?scid=kb;en-us;819267
http://forums.asp.net/t/1459560.aspx
http://aspadvice.com/blogs/ssmith/archive/2007/09/04/FIX-Request-format-is-unrecognized-for-URL-unexpectedly-ending-in.aspx
http://forums.asp.net/t/988377.aspx
Ahsan's Experience 