Windows Phone Development
I recently read Hanselman’s article (http://www.hanselman.com/blog/FromConceptToCodeIn6HoursShippingMyFirstWindowsPhoneApp.aspx?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+ScottHanselman+%28Scott+Hanselman+-+ComputerZen.com%29&utm_content=Google+Reader), which is very good starting point for me to develop Windows Phone application. And there are several useful links inside that article:
JQuery validation Example
Hi all,
I have recently worked on some client-side validation for dynamic generated UI by ASP.Net. As usual, I started to spend some time to write a small htm page for prototype and testing.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head><title>
</title><link href="./main.css" type="text/css" rel="stylesheet" /><link href="./globalClasses.css" type="text/css" rel="stylesheet" />
<script src="./jquery-1.3.2.min.js" type="text/javascript"></script>
<script src="./jquery.validate.min.js" type="text/javascript"></script>
</head>
<body>
<form name="ctl01" method="post" id="ctl01">
<div id="Ctl0_QuestionList">
<input name="Ctl0_QuestionLlistError" type="hidden" />
<div id="textboxContainerPanel">
<div id="textBoxPanel">
<input name="Ctl0_TextBox1" type="text" id="Ctl0_TextBox1"/>
</div>
</div>
<br />
<select name="Ctl0_DropDownList1" id="Ctl0_DropDownList1">
<option value=""></option>
<option value="BMW">BMW</option>
<option value="Honda">Honda</option>
<option value="Toyota">Toyota</option>
</select>
<br />
<div id="radioContainerPanel">
<div id="radiobuttonpanel">
<input id="Ctl0_RadioButtonList1_0" type="radio" name="Ctl0_RadioButtonList1" value="Milk" /><label for="Ctl0_RadioButtonList1_0">Milk</label>
<br />
<input id="Ctl0_RadioButtonList1_1" type="radio" name="Ctl0_RadioButtonList1" value="Apple" /><label for="Ctl0_RadioButtonList1_1">Apple</label>
<br />
<input id="Ctl0_RadioButtonList1_2" type="radio" name="Ctl0_RadioButtonList1" value="Cheese" /><label for="Ctl0_RadioButtonList1_2">Cheese</label>
</div>
</div>
</div>
<br />
<input type="submit" name="Ctl0_Button1" value="Button" id="Ctl0_Button1" type="submit" class="submit" onclick="printValue();"/>
<script type="text/javascript">
function printValue()
{
var answeredCount = 0;
var tag = 'test';
$("[id$='QuestionList'] input[type='text']").each ( function (index) {
if ($(this).val() != "") answeredCount += 1;
});
$("[id$='QuestionList'] select").each( function (index) {
if ($(this).val() != "") answeredCount += 1;
});
answeredCount += $("[id$='QuestionList'] input[type='radio']:checked").size();
alert(tag + ":" + answeredCount);
}
//<![CDATA[
$(document).ready(function() {
$('#ctl01').validate(
{
errorPlacement: function (error, element)
{
if (element.attr('type') == 'radio')
{
error.insertAfter(element.parent());
}
else
{
error.insertAfter(element);
}
}
}
);
$("[name$='TextBox1']").rules('add',
{
required: true,
messages:
{
required: 'please enter TextBox1.'
}
});
$("[name$='DropDownList1']").rules('add',
{
required: true,
messages:
{
required: 'please enter DropDownList1.'
}
});
$("[name$='RadioButtonList1']").rules('add',
{
required: true,
messages:
{
required: 'please enter RadioButtonList1.'
}
});
$("[name$='QuestionLlistError']").rules('add',
{
required: function(element) {
var requiredCount = 2;
var answeredCount = 0;
$("[id$='QuestionList'] input[type='text']").each ( function (index) {
if ($(this).val() != "") answeredCount += 1;
});
$("[id$='QuestionList'] select").each( function (index) {
if ($(this).val() != "") answeredCount += 1;
});
answeredCount += $("[id$='QuestionList'] input[type='radio']:checked").size();
return (requiredCount > answeredCount);
},
messages:
{
required: 'please enter QuestionList1.'
}
});
});//]]>
</script>
</form>
</body>
</html>
Above is the small htm page of my work. Please spend some time play with it and you will find it is very useful (I believe) for:
1. Change the error message for radio button.
2. Dynamic validation for requried question count/response count.
Enjoy!!
Asp.Net Mvc Theme and Globalization Support
I am very interested to use ASP.Net Mvc framework and read many of related articles. However I haven’t found a flexible theme and globalization supporting solution with sample codes. Therefore, I would like to build this to provide everyone as a starting point to customize their own solution.
You can download the sample solution from here.
This solution, I have implemented a new ResourceProviderFactory to customize the corresponding theme and define the resource file mapping; and also a new view engine in order to support different implementations for different themes. In the solution, I have used FluentHtml from MvcContrib and MVC T4 templates. To remind, this is just a starting point, there are lots of enhancement you can make such as helpers to access resource stings. You are welcome to share your feedback when using this and/or any enhancemets you have made on it.
Linq to XSD: cannot reference the namespace
I have recently install LinqtoXSD coz I would like to write some text on IQueryable objects which require some test data. After I have installed LinqtoXSD, then I follow the sample found in http://www.codeproject.com/KB/linq/LINQ_to_XSD.aspx. I have rebuild the whole solution after adding the XSD schema file. However Resharper complain that the namespace I have defined in XSD doesn’t exist. I have opened the object browser and check that the namespace do exist.
I don’t know what I did wrongly, then I have downloaded the demo source from above link and do a diff on the related project and solution files, but there is no findings.
Finally I close and re-open the solution, then the namespace is displayed by intellisence and resharper no longer to complain it.
P.S.> I am using VS 2008 SP1.
Install loopback network adapter in Vista host to connect virtual machine
Hello,
I am very busy to setup my new house in last month. After that, I also upgrade my XP to vista and plan to run a Windows 2008 virtual machine. Therefore I try to setup a loopback network adapter to connect between vista host and virtual machine running on Virtual PC 2007. Initially I think this is a 5-minutes task, and you can easily find information / steps from the internet teaching you how to do this. However after reading thr’ the internet, I cannot find the correct steps to setup loopback adapter with virtual PC.
I find a web site that just have a little problem with the setup procedures:
http://weblogs.asp.net/bsimser/archive/2009/04/20/using-the-loopback-adapter-and-sharepoint.aspx
Here are the high-level steps:
- install loopback network adapter in host machine (vista)
- configure static ip (say 192.168.0.1 with subnet 255.255.255.0) to loopback network adapter
- assign the loopback network adapter ONLY to virtual machine (win2008) networking setting.
- start virtual machine
- go to network connection in virtual machine, you can find there is a network adapter here.
- then configure this network adapter with static ip (say 192.168.0.100 with subnet 255.255.255.0)
- then try to ping 192.168.0.1 from virtual machine.
- If you want to use the computer name to ping each other, you can open windows\system32\drivers\etc\host file and add the corresponding entry; do this for both host and virtual machine.
Now my vista (host) can talk to win 2008 (virtual machine) each other. Wish this can help you setup your network in 5 minutes…(i used 2 hours to make this work). 
SharpZipLib Example
Hello everyone, i recently need to unzip the downloaded data files. As a result, I find that there is a useful library provided by ISharpCode with sample code in Peter Bromberg’s blog.
Compute MD5 checksum in hex string
Recently I need to validate the checksum of the downloaded data file. After looking around, I find this reference to teach you how to compute the MD5 hash, http://www.nikhedonia.com/notebook/entry/verifying-md5-checksum/. However i found that the MD5 hash in the checksum file stores as 32-characters, which is different from 16-bytes MD5 hash. Finally I knew that this 32-characters string is the hex string of the 16 bytes MD5 values. Therefore i have made some modifications and below is my code for your reference:
public string ComputeMd5HashFromFile(string filePath)
{
StreamReader fileReader = null;
UTF8Encoding utf8Encoding = new System.Text.UTF8Encoding();
StringBuilder result = new StringBuilder(32);
byte[] hash = null;
try
{
fileReader = File.OpenText(filePath);
MD5 md5 = new MD5CryptoServiceProvider();
hash = md5.ComputeHash(utf8Encoding.GetBytes(fileReader.ReadToEnd()));
foreach (byte b in hash)
{
result.Append(b.ToString("x2").ToUpper()); // used to convert each byte to a hex string
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
if (fileReader != null) fileReader.Close();
}
return result.ToString().ToUpper();
}
Create Custom Windows Shortcut
For my job, I often need to use the Windows Calculator to calculate the program results. Therefore I would like to find an easy way to open the Calculator – create a custom Windows shortcut. First create a shortcut of the program, then open its property window. There is a shortcut-key field in the dialog, input any single character to activate keyboard shortcut. It’s awesome for me!!
Create context shortcut for Visual Studio msbuild
I have searched in the internet to find an easy way to rebuild my visual studio solution without open it. Then I find there is a way to update the registry to provide a context shortcut to run msbuild command by right-click on .sln file from David Mohundro’s website.
You can create a msbuild.reg file by copying the below script (which this is for .net framework 3.5), and run this reg file.
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\VisualStudio.Launcher.sln\shell\msbuild]
[HKEY_CLASSES_ROOT\VisualStudio.Launcher.sln\shell\msbuild\command]
@=”\”C:\\WINDOWS\\Microsoft.NET\\Framework\\v3.5\\MSBuild.exe\” /target:Rebuild \”%1\”"
Javascript: onchange problem
I have wrote some javascript to try synchronize the value from textBox1 to textBox2, and then added to the textBox1 in cs file like this:
String SyncValueScript = "document.getElementById('" + textBox2Control.ClientID +
"').value = this.value;";
textBox1Control.Attributes.Add("onchange", SyncValueScript);
However I found that there is a situation that onchange will not be fired, even the value of textBox1 is changed. Below is the step to reproduce this situation:
- Open two IE windows.
- Copy some values in the clipboard and paste on textBox1 in IE window 1.
- Then click on IE window 2.
- Go back to the IE window 1 by click on controls other than textBox 1.
- you will find that the value of textBox1 is not synced to textBox2.
Solution: there is a very easy fix for this problem, just use “onblur” event instead of “onchange”.
