Use of Instrument browser

In this part of tutorial we shall demonstrate work of the grid with large data volumes on the example of Instrument

browser.

The business model already contains Instrument class. We shall add only one field (quoting currency) and create a lot of instruments in the application (e.g. 100000). For this purpose we shall modify Provider class and create an arbitrary list of instruments. As before, this list will be available as follows. Now let’s bind the grid to the data source. Memory consumption is one of the most important aspects of displaying large data volumes. When grid connects directly to application business logic, it significantly reduces memory consumption because there are no intermediate objects between the data layer and its presentation.

Let’s create InstrumentBrowser control and place it at the main panel. We shall add a panel for instrument filtering and

searching and the grid to this control. We shall configure grid in the designer and link it to the data source.The screenshot below demonstrates the results of application work.

Let’s note an important detail. The collection of instruments contains about 100,000 elements. It is created when the application is launched. Total memory consumption of the entire application is about 45 MB. This collection is bound to the grid when Instrument browser tab is opened. After that, memory consumption increases to 59 MB. This means that the grid uses about 14 MB to display 100,000 elements. This amount of elements loads for about seconds.These indicators demonstrate of grid performance with realistic numbers of instruments.

To navigate large data volumes a high performance filter is required. The grid provides a simple API for filter implementation. In this application many instruments have Weight, Shares, Capitalization values equaling 0. For more convenient data interpretation it is better not to display insignificant zeroes. Besides, it is better to add thousand separators for data formatting. Use of formats is the simplest way to implement this functionality. An example of creating a simple format for displaying digital information is provided below.

Net Grid provides broad functionality of displaying various datagrid elements, such as cells, rows, headers and columns. The main objective of Dapfor is to develop high-performance software, specifically grids. Popular MVVM programming model that extensively uses databinding, data gridview to separate data from presentation.

Shiva Makes His Debut On Stage (arangetram) With Devine Instrument, Mridangam

Shiva makes his debut on stage (Arangetram) with Devine instrument, Mridangam

You are coardially invited to witness the magic of Mridangam on Sunday August 25th, 2013 at Dolores

Mridangam, the famous percussion instrument of India, is becoming choice of many national and international musicians also. It is a double headed drum of south India. There are many stories about origin of Mridangam , but according to most of the people, it is often depicted as the instrument of choice for a number of deities including Ganesha (the remover of obstacles) and Nandi, who is the vehicle and companion of Shiva. Nandi is said to have played the mridangam during Shiva’s primordial tandavadance, causing a divine rhythm to resound across the heavens. The mridangam is thus also known as “Deva Vaadyam,” or “Divine Instrument”
It is a dream of every grand father and grand mother to see talent of their grandson in a prestigious concert.
S.V.Iyer and Lakshami Viswanathan cordially invite you with family to see their grandson Shiva’s Debut Concert (Arangetram) on Mridangam(South Indian drum) on Sunday Aug 25, 2013 at 4PM At Dolores-Winningstad Theatre 1111 SW Boradway, Portland, OR 97205 Dinner/Reception following concert.
Seating starts at 3.30pm. Parking for this event is free at City Center Parking located at the intersection of SW 10th Ave and Main St. Please rsvp with the number of people attending before Friday 04/16/13.

Regards
S.V. Iyer & Lakshmi Viswanathan
13943 NW Country Woods Ln, Portland OR 97231
Ph. 503-285-4424

We cordially invite you with family to our grandson Shiva’s

Debut Concert (Arangetram) on Mridangam(South Indian drum)

on Sunday Aug 25, 2013 at 4PM
At Dolores-Winningstad Theatre
1111 SW Boradway, Portland, OR 97205
Dinner/Reception following concert.

Seating starts at 3.30pm.
Parking for this event is free at City Center Parking located at the intersection of SW 10th Ave and Main St.

Please rsvp with the number of people attending before Friday 04/16/13.

Regards
S.V. Iyer & Lakshmi Viswanathan
13943 NW Country Woods Ln, Portland OR 97231
Ph. 503-285-4424

For further information, please contact:
Atul Malikram
+91 9755020247

www.atulmalikram.in

Four Tools For Learning The Piano

Learning to play the piano is not something that everyone is motivated to do. It has been suggested in various studies that those who learn a musical instrument will think clearer and do better in all other aspects of studies. That’s why learning the piano is a fabulous accomplishment to achieve. Not everyone can simply learn piano overnight, though. In fact, it takes a few tools for someone to master before the piano can be learned.

The first thing one might need when wanting to learn how to play the piano is, of course, a piano. Any sort of piano will do. It could be electric, an antique or a brand new piano right out of the shop. Do to their expense and their large, heavy frame; it’s not best to rent one. Instead, invest in purchasing one in order to be able to spend adequate time practicing. Many start out with an electric keyboard and move forward from there. The point is that no one can adequately learn to play an instrument without that instrument.

The second thing one will need in order to learn the piano properly is a piano tuner. Hiring someone to make sure the piano is in tune is imperative. Many people learn to play by ear. It is impossible to learn adequately if the piano is out of key. They can go out of key due to several factors. The most prominent factor is the fact that they have been sitting for a long period of time without being played. It is not terribly expensive to hire someone to do piano tuning and is definitely suggested.

Another fabulous tool for learning the piano is the metronome. These are time keepers that help the piano player keep their timing with the music. Many who play the piano have a tendency to play much faster than the music actually calls for. This can become a problem in recitals and especially duets. Metronomes are not terribly expensive and can be purchased online or in nearly any piano shop.

Lastly, a very helpful tool for learning the piano is having a teacher or tutor of some sort. Online websites are getting better and better with their training methods. Videos and instruction manuals can be purchased for a small monthly fee to make learning flexible for anyone who is anxious to learn on their own time. Of course, for those who prefer to stay away from the internet, a piano teacher is another alternative as well. Either way, it’s important to equip oneself with the necessary tools for learning the piano.