Thursday, January 17, 2008

Getting Time part only from SQL DateTime Value

Have you tried getting the time value only from a SQL DateTime value?

I have seen many people struggling with datetime fields in their programming life. Some people face problems getting the date only from datetime field. If you are one who is struggling please read my article on April 2007.

In this article I would like to mention how you can get the time only from a datetime value.

SELECT CAST(CAST(GETDATE() AS FLOAT) - FLOOR(CAST(GETDATE() AS FLOAT)) AS DATETIME)

Here what I am doing is simply casting the datetime value returned by GETDATE() into FLOAT then I am substracting the full value (value without the fractions) from that. So I will get the fraction part of the float value.

Note that when you cast a datetime value to a float, the full part represents the date and the fraction part represents the time.

2008-01-18 18:22:15.640
39463.7654587963

Then I will cast the result back to the datetime which brings me the time.

This method of casting datetime value to a float value is always handy when working with datetime values.

Friday, January 04, 2008

Inserting a Double Quote in to a String in .NET

Even though this is not new I do forget this always, so thought of putting an entry on how we can put a double quote inside of a string.

VB.NET
Dim str As String = "Example String " & """" & "This is the String with double quotes." & """"
MessageBox.Show(str)

In VB.Net you can indicate that there is a double quote in a string by using 4 double quotes ("""").

C#.NET
string str = "Example String " + "\"" + "This is the String with double quotes." + "\"";
MessageBox.Show(str);

As you will notice in C# the double quote can be represented as double quote, back slash and again using two double quotes ("\"").

The above string will be displayed as follows.

image

Friday, December 28, 2007

Microsoft Office Mobile 6.1

Microsoft has released Office Mobile 6.1. This is an upgrade to earlier versions of Office Mobile. This version will enable opening Office 2007 files in mobiles (Open XML formatted files).
Additionally it will have the following features,

• Enhanced viewing experience for charts in Excel Mobile.
• Ability to view SmartArt in PowerPoint Mobile.
• Ability to view and extract files from compressed (.zip) folders.
as Microsoft has quoted.

Download it from Microsoft using the following link.
http://www.microsoft.com/downloads/details.aspx?familyid=4b106c1f-51e2-42f0-ba32-69bb7e9a3814&displaylang=en&tm

Thursday, December 20, 2007

Try Your Flying Skills

If you would like to have fun flying aircraft's check the link below to get access flying either of Bombardier Dash 8 Q400, Boeing 737-400 or the giant in the skies Airbus A380.

http://www.creativesql.co.uk/flightgame

See how many miles that you can fly :-).
Happy Flying.

Wednesday, December 19, 2007

KITT is Back

Can you remember Knight Rider? An indestructible Black car which drives itself. It was then called Knight Industries Two Thousand (KITT).
It seems that they are going to bring back KITT to life again in TVs. This time also it will be known as KITT (Knight Industries Three Thousand). The new three thousand model will have abilities like changing colour and size. Also this will have more Artificial Intelligence (AI) making KITT the ultimate car for fighting against crime.

If everything goes smoothly new KITT will start dominating television from first quarter of 2008.

Read more at,

Monday, December 17, 2007

Adding an existing Dataset to a project - VS.NET 2003

Did you try adding an existing typed dataset to a project in Visual Studio 2003?

If you did then you may have noted that it will only add the files having the extensions .xsd (designer file) and .xsx (resource file) to the project, it will not add the .vb (class file). As a result you will not be able to use the added dataset. Also if anyone tries to add the class file again manually then it will be there as a separate class. Even though this works fine it will be misleading at a latter stage of the projects life. (In the following image you can see the 'dsDataset1.vb' file separately.)
Normally this 'dsDataset1.vb' file should come under 'dsDataset1.xsd'.

To get the dataset class file recreated in the correct location,
  • First open the dataset designer using Visual Studio (double click on the dataset).
  • Then right click on the dataset designer and select the 'Generate Dataset' menu option.
Now you will see the class ('dsDataset1.vb') file nicely located under 'dsDataset1.xsd'.

Tuesday, December 04, 2007

Detecting Whether the Application is Already Running

Recently a colegue of mine needed to know how he can determine whether his application is already running in the machine at application start.

Using this post I am going to share the solution with you all, showing how you can determine whether your application is already running in the computer. By detecting this either you can stop starting of the second instance of the application and activate the already running application for the user or you can attempt to close the earlier application and start the new one. If you does not check this then multiple applications might start and the user might complain about the application performance. Also this may cause problems occurring from locked resources.

* Visual Basic (VB)
Using VB you can easily check this by using the App object.
------------------------------------------------------------
If App.PrevInstance = True Then
MsgBox("The program '" & App.EXEName & "'is already running. Please use the running application.")
End
End If
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* Visual Basic .NET (VB.NET)
Using VB.NET you can do this by using Diagnostics.Process class.
------------------------------------------------------------
If Diagnostics.Process.GetProcessesByName(Diagnostics.Process.GetCurrentProcess().ProcessName).Length > 1 Then
Application.Exit()
End If
------------------------------------------------------------