Redirect Parent page from IFrame

That is a common issue while working with IFrames. One solution to this problem can be Javascript.

Add a Javascript like below:

if (parent.document) { 
parent.document.location.href='http://www.google.com';
 }


In  ASP .NET,  register above javascript statement using 

Page.RegisterStartupScript( ) method

Date Formats in SQL Server

One of the most frequently asked questions in SQL Server forums is how to format a datetime value or column into a specific date format.  Here's a summary of the different date formats that come standard in SQL Server as part of the CONVERT function.  Following the standard date formats are some extended date formats that are often asked by SQL Server developers.

It is worth to note that the output of these date formats are of VARCHAR data types already and not of DATETIME data type.  With this in mind, any date comparisons performed after the datetime value has been formatted are using the VARCHAR value of the date and time and not its original DATETIME value.

Standard Date Formats
Date Format	Standard	SQL Statement	Sample Output
Mon DD YYYY 1 HH:MIAM (or PM)	Default	SELECT CONVERT(VARCHAR(20), GETDATE(), 100)	Jan 1 2005 1:29PM 1
MM/DD/YY	USA	SELECT CONVERT(VARCHAR(8), GETDATE(), 1) AS [MM/DD/YY]	11/23/98
MM/DD/YYYY	USA	SELECT CONVERT(VARCHAR(10), GETDATE(), 101) AS [MM/DD/YYYY]	11/23/1998
YY.MM.DD	ANSI	SELECT CONVERT(VARCHAR(8), GETDATE(), 2) AS [YY.MM.DD]	72.01.01
YYYY.MM.DD	ANSI	SELECT CONVERT(VARCHAR(10), GETDATE(), 102) AS [YYYY.MM.DD]	1972.01.01
DD/MM/YY	British/French	SELECT CONVERT(VARCHAR(8), GETDATE(), 3) AS [DD/MM/YY]	19/02/72
DD/MM/YYYY	British/French	SELECT CONVERT(VARCHAR(10), GETDATE(), 103) AS [DD/MM/YYYY]	19/02/1972
DD.MM.YY	German	SELECT CONVERT(VARCHAR(8), GETDATE(), 4) AS [DD.MM.YY]	25.12.05
DD.MM.YYYY	German	SELECT CONVERT(VARCHAR(10), GETDATE(), 104) AS [DD.MM.YYYY]	25.12.2005
DD-MM-YY	Italian	SELECT CONVERT(VARCHAR(8), GETDATE(), 5) AS [DD-MM-YY]	24-01-98
DD-MM-YYYY	Italian	SELECT CONVERT(VARCHAR(10), GETDATE(), 105) AS [DD-MM-YYYY]	24-01-1998
DD Mon YY 1	-	SELECT CONVERT(VARCHAR(9), GETDATE(), 6) AS [DD MON YY]	04 Jul 06 1
DD Mon YYYY 1	-	SELECT CONVERT(VARCHAR(11), GETDATE(), 106) AS [DD MON YYYY]	04 Jul 2006 1
Mon DD, YY 1	-	SELECT CONVERT(VARCHAR(10), GETDATE(), 7) AS [Mon DD, YY]	Jan 24, 98 1
Mon DD, YYYY 1	-	SELECT CONVERT(VARCHAR(12), GETDATE(), 107) AS [Mon DD, YYYY]	Jan 24, 1998 1
HH:MM:SS	-	SELECT CONVERT(VARCHAR(8), GETDATE(), 108)	03:24:53
Mon DD YYYY HH:MI:SS:MMMAM (or PM) 1	Default + milliseconds	SELECT CONVERT(VARCHAR(26), GETDATE(), 109)	Apr 28 2006 12:32:29:253PM 1
MM-DD-YY	USA	SELECT CONVERT(VARCHAR(8), GETDATE(), 10) AS [MM-DD-YY]	01-01-06
MM-DD-YYYY	USA	SELECT CONVERT(VARCHAR(10), GETDATE(), 110) AS [MM-DD-YYYY]	01-01-2006
YY/MM/DD	-	SELECT CONVERT(VARCHAR(8), GETDATE(), 11) AS [YY/MM/DD]	98/11/23
YYYY/MM/DD	-	SELECT CONVERT(VARCHAR(10), GETDATE(), 111) AS [YYYY/MM/DD]	1998/11/23
YYMMDD	ISO	SELECT CONVERT(VARCHAR(6), GETDATE(), 12) AS [YYMMDD]	980124
YYYYMMDD	ISO	SELECT CONVERT(VARCHAR(8), GETDATE(), 112) AS [YYYYMMDD]	19980124
DD Mon YYYY HH:MM:SS:MMM(24h) 1	Europe default + milliseconds	SELECT CONVERT(VARCHAR(24), GETDATE(), 113)	28 Apr 2006 00:34:55:190 1
HH:MI:SS:MMM(24H)	-	SELECT CONVERT(VARCHAR(12), GETDATE(), 114) AS [HH:MI:SS:MMM(24H)]	11:34:23:013
YYYY-MM-DD HH:MI:SS(24h)	ODBC Canonical	SELECT CONVERT(VARCHAR(19), GETDATE(), 120)	1972-01-01 13:42:24
YYYY-MM-DD HH:MI:SS.MMM(24h)	ODBC Canonical (with milliseconds)	SELECT CONVERT(VARCHAR(23), GETDATE(), 121)	1972-02-19 06:35:24.489
YYYY-MM-DDTHH:MM:SS:MMM	ISO8601	SELECT CONVERT(VARCHAR(23), GETDATE(), 126)	1998-11-23T11:25:43:250
DD Mon YYYY HH:MI:SS:MMMAM 1	Kuwaiti	SELECT CONVERT(VARCHAR(26), GETDATE(), 130)	28 Apr 2006 12:39:32:429AM 1
DD/MM/YYYY HH:MI:SS:MMMAM	Kuwaiti	SELECT CONVERT(VARCHAR(25), GETDATE(), 131)	28/04/2006 12:39:32:429AM

Here are some more date formats that does not come standard in SQL Server as part of the CONVERT function.

Extended Date Formats
Date Format	SQL Statement	Sample Output
YY-MM-DD	SELECT SUBSTRING(CONVERT(VARCHAR(10), GETDATE(), 120), 3, 8) AS [YY-MM-DD]	99-01-24
YYYY-MM-DD	SELECT CONVERT(VARCHAR(10), GETDATE(), 120) AS [YYYY-MM-DD]	1999-01-24
MM/YY	SELECT RIGHT(CONVERT(VARCHAR(8), GETDATE(), 3), 5) AS [MM/YY] SELECT SUBSTRING(CONVERT(VARCHAR(8), GETDATE(), 3), 4, 5) AS [MM/YY]	08/99
MM/YYYY	SELECT RIGHT(CONVERT(VARCHAR(10), GETDATE(), 103), 7) AS [MM/YYYY]	12/2005
YY/MM	SELECT CONVERT(VARCHAR(5), GETDATE(), 11) AS [YY/MM]	99/08
YYYY/MM	SELECT CONVERT(VARCHAR(7), GETDATE(), 111) AS [YYYY/MM]	2005/12
Month DD, YYYY 1	SELECT DATENAME(MM, GETDATE()) + RIGHT(CONVERT(VARCHAR(12), GETDATE(), 107), 9) AS [Month DD, YYYY]	July 04, 2006 1
Mon YYYY 1	SELECT SUBSTRING(CONVERT(VARCHAR(11), GETDATE(), 113), 4, 8) AS [Mon YYYY]	Apr 2006 1
Month YYYY 1	SELECT DATENAME(MM, GETDATE()) + ' ' + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS [Month YYYY]	February 2006 1
DD Month 1	SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) AS [DD Month]	11 September 1
Month DD 1	SELECT DATENAME(MM, GETDATE()) + ' ' + CAST(DAY(GETDATE()) AS VARCHAR(2)) AS [Month DD]	September 11 1
DD Month YY 1	SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) + ' ' + RIGHT(CAST(YEAR(GETDATE()) AS VARCHAR(4)), 2) AS [DD Month YY]	19 February 72 1
DD Month YYYY 1	SELECT CAST(DAY(GETDATE()) AS VARCHAR(2)) + ' ' + DATENAME(MM, GETDATE()) + ' ' + CAST(YEAR(GETDATE()) AS VARCHAR(4)) AS [DD Month YYYY]	11 September 2002 1
MM-YY	SELECT RIGHT(CONVERT(VARCHAR(8), GETDATE(), 5), 5) AS [MM-YY] SELECT SUBSTRING(CONVERT(VARCHAR(8), GETDATE(), 5), 4, 5) AS [MM-YY]	12/92
MM-YYYY	SELECT RIGHT(CONVERT(VARCHAR(10), GETDATE(), 105), 7) AS [MM-YYYY]	05-2006
YY-MM	SELECT RIGHT(CONVERT(VARCHAR(7), GETDATE(), 120), 5) AS [YY-MM] SELECT SUBSTRING(CONVERT(VARCHAR(10), GETDATE(), 120), 3, 5) AS [YY-MM]	92/12
YYYY-MM	SELECT CONVERT(VARCHAR(7), GETDATE(), 120) AS [YYYY-MM]	2006-05
MMDDYY	SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 1), '/', '') AS [MMDDYY]	122506
MMDDYYYY	SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 101), '/', '') AS [MMDDYYYY]	12252006
DDMMYY	SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 3), '/', '') AS [DDMMYY]	240702
DDMMYYYY	SELECT REPLACE(CONVERT(VARCHAR(10), GETDATE(), 103), '/', '') AS [DDMMYYYY]	24072002
Mon-YY 1	SELECT REPLACE(RIGHT(CONVERT(VARCHAR(9), GETDATE(), 6), 6), ' ', '-') AS [Mon-YY]	Sep-02 1
Mon-YYYY 1	SELECT REPLACE(RIGHT(CONVERT(VARCHAR(11), GETDATE(), 106), 8), ' ', '-') AS [Mon-YYYY]	Sep-2002 1
DD-Mon-YY 1	SELECT REPLACE(CONVERT(VARCHAR(9), GETDATE(), 6), ' ', '-') AS [DD-Mon-YY]	25-Dec-05 1
DD-Mon-YYYY 1	SELECT REPLACE(CONVERT(VARCHAR(11), GETDATE(), 106), ' ', '-') AS [DD-Mon-YYYY]	25-Dec-2005 1

¹ To make the month name in upper case, simply use the UPPER string function.

*source:http://www.sql-server-helper.com/tips/date-formats.aspx

Handling OnSelectedIndexChange event of DropDownList in Data Repeater

Few days ago, I faced a problem while registering OnSelectedIndexChanged event of a DropDownList (which is Embedded in a Data Repeater). Problem is, when I change Selected Index of that Drop Down List, it fires the event but do not run the Method registered to that event. the Scenario is described below.

<asp:Repeater ID="PrescriptionRepeater" runat="server">
<ItemTemplate>
<asp:DropDownList runat="server" ID="ddlStatus" OnSelectedIndexChange="ddlStatus_SelectedIndexChanged" autopostback="true">
<asp:ListItem Text="Prescribed"></asp:ListItem>
<asp:ListItem Text="Cancelled"></asp:ListItem>
<asp:ListItem Text="Lost"></asp:ListItem>
</asp:DropDownList>
</ItemTemplate>
</asp:Repeater>

I have Placed a DropDownList(id="ddlStatus") in a DataRepeater and set
OnSelectedIndexChange="ddlStatus_SelectedIndexChanged" autopostback="true". Now when I run the Page and change selected index of drop down list, it posts back but does not run the method ddlStatus_SelectedIndexChanged .


Then I have tried to register the Event by Hard coding.
ddlStatus.SelectedIndexChanged += new EventHandler(ddlStatus_SelectedIndexChanged);

But still there is no change. Finally, my senior coleage find out a solution

That is Page.Request.Params.Get("__EVENTTARGET") . This method returns name of the control that caused PostBack. Then what we did was, find that control and call a method for further processing

if (Page.IsPostBack)
{
DropDownList ddlStatus = (DropDownList)Page.FindControl(Page.Request.Params["__EVENTTARGET"]);
if (ddlStatus != null)
{
DDLStateSelectedIndexChangedEvent(ddlStatus);
}
}

*I have not checked yet what to do If you have more than one dropdownlist causing Postback in a single row of DataRepeater.
*Tested on Visual Studio 2005 and .Net 2.0
Want to know details? click below
Determining the Control that Caused a PostBack

iTank - Vision Control Robot

Introduction:

A robot is an electro-mechanical device that can perform autonomous or preprogrammed tasks. A robot may act under the direct control of a human (e.g. the robotic arm of the space shuttle) or autonomously under the control of a programmed computer.

Nowadays robots are widely used as surveillance purpose in modern world.

To keep track with the modern world we have stepped to design and develop a small robot that is able to track a specified colored object around through image processing. We named it Intelligent Tank (iTank). It is artificially intelligent, it can track any user specified colored object. Again we call it a tank; it has a Laser light to point the object. We used Laser light as a model of a gun (it was not possible for us to install a real firing device like gun on it). Whenever iTank detects a user specified object, Laser light points to that object as if it is trying to shoot the object.

Anatomy:

iTank has three sections. The software, the circuits and the mechanical devices. Mechanical section consists of stepper motors attached with wheels and laser gun. iTank is based on a wooden structure. Circuit section has two parts, one is logic circuit and another is motor driver circuit. The software section is implemented solely in java with JMF (Java Media Framework) and parallel port control API.

Difficulties we faced:

In Bangladesh, main barrier in developing robot is scarcity of hardware. We had to depend on Dholai Khaal for motors, wheels and gears, Stadium Market for ICs and Internet (google search) for references. Problem was, what we learn from Internet is not always available in the local market and what we get from here is not on the Internet. It’s very tough to make a good combination of three Ws (What we know, What we have and What we want). Making a good workable physical structure was another issue. We had to change iTank’s structural design 4 times, which eventually increased our project cost.

Future Direction:

At present communication between iTank and computer is done by wires. But wireless communication will be best one to use it in practical purposes. iTank’s intelligence is not enough to serve practical purposes. Better AI capabilities like human tracker/bomb detector can be implemented in future.

We are:

Foyzul Hassan – shakil_oxygen@yahoo.com
Mohammad Mahedi Hasan – mahedi_018bd@yahoo.com
Goutom Kumar – apu2000bd@yahoo.com &
Md. Khairul Anam – mdkhairulanam@gmail.com

CSE-3 , MIST

"নেই কাজ তো ভেরেন্ডা ভাজ" - আসুন আমরা ভেরেন্ডা ("বায়ো ডিজেল") ভাজি

"নেই কাজ তো ভেরেন্ডা ভাজ" - এমন কথা ঠাট্টা করে আমরা অনেক বলেছি। কিন্তু এখন সময় এসেছে ভেরেন্ডা ভাজার।

সম্প্রতি "বায়ো ডিজেল" এর জয়জয়কার চারদিকে। সেই দিন ইটিভি তে এটা নিয়ে একটা আলোচনা অনুষ্ঠান দেখলাম। আমাদের দেশে গ্রামে বাড়ির আশে পাশে ভেরেন্ডা গাছ দেখা যায়। এই গাছের ফল ভেরেন্ডা হলো "বায়ো ডিজেল" এর কাচামাল।

"বায়ো ডিজেল" কি?
এটা উদ্ভিদের বীজ থেকে উৎপন্ন এক ধরনের জ্বালানী যা ডিজেল ইন্জিনে ব্যবহার করা যায়। এর ব্যবহার বৃদ্ধি করতে পারলে খনি থেকে প্রাপ্ত ডিজেলের উপর চাপ কমানো যাবে।
"ভেরেন্ডা " কি?
ভেরেন্ডা গাছের ইংরেজি নাম Jatropha (যেট্রোফা)"। এটা যেকোনো পতিত জমি তে চাষ করা যায়, এমন কি মরু ভুমি তেও চাষ করা যায়। প্রথম ২বছর কোনো ফল দেয়না। পরবর্তী ৫০বছর পর্যন্ত ফল দেয় এবং প্রতি বছর ফলন পুর্ববর্তী বছরের চেয়ে বেশি হয়। এই গাছের ফল থেকে যে বীজ পাওয়া যায় তা থেকে বিশেষ উপায়ে (কম খরচে) যে তেল পাওয়া যায় তে আমরা ডিজেল এর বিকল্প হিসেবে ব্যবহার করতে পারি। এছাড়া তেল তৈরী করার সময় যে খৈল পাওয়া যায় তা সার হিসেবে ব্যবহার করা যায়, আর সাবানের জন্য গ্লিসারিন ও পাওয়া যায়।

বিশ্বের অন্যান্য দেশ কি ভাবছে?
সব দেশের খবর জানিনা। শুধু এতটুকু জানি, ইন্ডিয়া ইতিমধ্যে ১০লাখ হেক্টর জমিতে এর চাষ শুরু করেছে।

বাংলাদেশ কি ভাবছে?
সবার খবর জানিনা। শুধু এতটুকু জানি, একজন প্রবাসী বাঙালি (ইটিভি তে উনি সাক্ষাতকারে বলেছেন) চেষ্টা চালাছেন কিছু করার জন্য। আমরা আমাদের পতিত জমি যেমন, রাস্তার পাশে, সুন্দরবন, কক্সবাজার সৈকতের পাশে এর ব্যপক চাষ করতে পারি।
এতে করে আমাদের দেশের ডিজেল চাহিদাতো মিটবেই, সেই সাথে বিপুল বৈদেশিক মুদ্রা সাশ্রয় হবে

বায়োফুয়েলকে জ্বালানি হিসেবে উৎসাহিত করবো আমি, কিন্তু খাদ্যশস্য উপেক্ষা করে জ্বালানি উৎপাদনকে সমর্থন করিনা ।

কিছু ছবি সংযুক্ত করলাম....

Invitation for participating 44th Convocation of University of Dhaka 2008

University of Dhaka has scheduled the 44th Convocation 2008 and inviting student participations for registration.
Here is Prothom Alo newspapers Cutting

Common Interview Questions - Bangladesh Perspective

Common non-technical questions asked in Interview(BD):

1. Tell me about yourself.
2. What are your short term goals?
3. What are your long term goals?
4. Where do you see yourself five years from now?
5. Tell me why I should hire you?
6. Why did you leave your last job?
7. Describe your definition of a team player?
8. Sight examples of when in the past you have proven to be a team player?
9. How would you handle a conflict with another employee?
10. What do you believe you can gain by working at this company?
11. Tell me 3 good and 3 bad thing about yourself.

Welcome

Hi
This is my first blog. Thanks for visiting.
Lost Boy