Tuesday, May 19, 2020
Overview of Partial Classes in Visual Basic .NET
Partial Classes are a feature of VB.NET that is used almost everywhere, but theres not much written about it. This might be because there are not a lot of obvious developer applications for it yet. The primary use is in the way ASP.NET and VB.NET solutions are created in Visual Studio where its one of those features that is normally hidden. A partial class is simply a class definition that is split into more than one physical file. Partial classes dont make a difference to the compiler because all the files that make up a class are simply merged into a single entity for the compiler. Since the classes are just merged together and compiled, you cant mix languages. That is, you cant have one partial class in C# and another in VB. You cant span assemblies with partial classes either. They all have to be in the same assembly. This is used a lot by Visual Studio itself, especially in web pages where it is a key concept in code behind files. Well see how this works in a Visual Studio, but understanding what changed in Visual Studio 2005 when it was introduced is a good starting point. In Visual Studio 2003, the hidden code for a Windows application was all in a section called a Region marked Windows Form Designer generated code. But it was still all there in the same file and it was easy to view, and change, the code in the Region. All of the code is available to your application in .NET. But since some of it is code that you should almost never mess with, it was kept in that hidden Region. (Regions can still be used for your own code, but Visual Studio doesnt use them anymore.) In Visual Studio 2005 (Framework 2.0), Microsoft did approximately the same thing, but they hid the code in a different place: a partial class in a separate file. You can see this at the bottom of the illustration below: --------Click Here to display the illustrationClick the Back button on your browser to return-------- One of the syntax differences between Visual Basic and C# right now is that C# requires that all partial classes be qualified with the keyword Partial but VB does not. Your main form in VB.NET doesnt have any special qualifiers. But the default class statement for an empty Windows application looks like this using C#: public partial class Form1 : Form Microsofts design choices on things like this are interesting. When Paul Vick, Microsofts VB designer, wrote about this design choice in his blog Panopticon Central, the debate about it in the comments went on for pages and pages. Lets see how all this works with real code on the next page. On the previous page, the concept of partial classes was explained. We convert a single class into two partial classes on this page. Heres an example class with one method and one property in a VB.NET project Public Class CombinedClass    Private m_Property1 As String    Public Sub New(ByVal Value As String)       m_Property1 Value    End Sub    Public Sub Method1()       MessageBox.Show(m_Property1)    End Sub    Property Property1() As String       Get          Return m_Property1       End Get       Set(ByVal value As String)          m_Property1 value       End Set    End Property End Class This class can be called (for example, in the Click event code for a Button object) with the code: Dim ClassInstance As New _    CombinedClass(About Visual Basic Partial Classes) ClassInstance.Method1() We can separate the properties and methods of the class into different physical files by adding two new class files to the project. Name the first physical file Partial.methods.vb and name the second one Partial.properties.vb. The physical file names have to be different but the partial class names will be the same so Visual Basic can merge them when the code is compiled. Its not a syntax requirement, but most programmers are following the example in Visual Studio of using dotted names for these classes. For example, Visual Studio uses the default name Form1.Designer.vb for the partial class for a Windows form. Remember to add the Partial keyword for each class and change the internal class name (not the file name) to the same name. I used the internal class name: PartialClass. The illustration below shows all of the code for the example and the code in action. --------Click Here to display the illustrationClick the Back button on your browser to return-------- Visual Studio hides partial classes such as Form1.Designer.vb. On the next page, we learn how to do that with the partial classes we just created. The previous pages explain the concept of partial classes and show how to code them. But Microsoft uses one more trick with the partial classes generated by Visual Studio. One of the reasons for using them is to separate application logic from UI (user interface) code. In a large project, these two types of code might even be created by different teams. If theyre in different files, they can be created and updated with a lot more flexibility. But Microsoft goes one more step and hides the partial code in Solution Explorer as well. Suppose we wanted to hide the methods and properties partial classes in this project? Theres a way, but its not obvious and Microsoft doesnt tell you how. One of the reasons you dont see the use of partial classes recommended by Microsoft is that its not really supported very well in Visual Studio yet. To hide the Partial.methods.vb and Partial.properties.vb classes that we just created, for example, requires a change in the vbproj file. This is an XML file that isnt even displayed in Solution Explorer. You can find it with Windows Explorer along with your other files. A vbproj file is shown in the illustration below. --------Click Here to display the illustrationClick the Back button on your browser to return-------- The way were going to do this is to add a root class that is completely empty (only the Class header and End Class statement are left) and make both of our partial classes dependent on it. So add another class named PartialClassRoot.vb and again change the internal name to PartialClass to match the first two. This time, I have not used the Partial keyword just to match the way Visual Studio does it. Heres where a little knowledge of XML will come in very handy. Since this file will have to be updated manually, you have to get the XML syntax right. You can edit the file in any ASCII text editor - Notepad works just fine - or in an XML editor. It turns out that you have a great one in Visual Studio and thats what is shown in the illustration below. But you cant edit the vbproj file at the same time that youre editing the project its in. So close the project and open only the vbproj file. You should see the file displayed in the edit window as shown in the illustration below. (Note the Compile elements for each class. DependentUpon sub-elements must be added exactly as shown in the illustration below. This illustration was created in VB 2005 but it has been tested in VB 2008 as well.) --------Click Here to display the illustrationClick the Back button on your browser to return-------- For many of us, its probably enough to know that partial classes are there, just so we know what they are when were trying to track down a bug in the future. For large and complex systems development, they could be a small miracle because they can help organize code in ways that would have been impossible before. (You can also have partial structures and partial interfaces!) But some people have concluded that Microsoft invented them just for internal reasons - to make their code generation work better. Author Paul Kimmel even went so far as to suggest that Microsoft actually created partial classes to lower their costs by making it easier to outsource development work around the world. Maybe. Its the kind of thing they might do.
Wednesday, May 6, 2020
What Type Of Listener Am I - 1533 Words
What type of listener am I? There are four different types of listening the first is pretend listening where we are ignoring another person. Then we have the selective hearing is where we tune in and out of the conversation, we only hear some parts of the conversation. That moment where we are listening to someone and essentially hear everything they are saying we are being attentive listeners. When we are in class listening to our professor speak that is when we should be empathetic listeners all the time. It is hard to pin point what listener you are because everyone is guilty being every type of these listeners. It is important to show that you are always listening and giving positive body language to show you are being attentive especially when it comes down to your client. Communication in my own words is a way to talk and understand the people around us and to be able to make relationships, exchange ideas, and is a way of survival. Survival is not just to live but to be able to interact with the world and know where we come from, allows us to express our emotions instead of bundling them up inside which can lead you to feel pain throughout your body. Being able to understand body language and understanding information will help us create relationships with our clients and to grow in the profession. We are able to make relationships with people by expressing, sharing feelings, emotions, and common interests. Communication has allowed us to exchange ideas, believes, andShow MoreRelatedRelationship Between Music And Mood964 Words  | 4 PagesStyle, and Developmental Issues of Adolescents†(2003) Kelly D. Schwartz and Gregory T. Fouts observed the personality traits and developmental issues in three different groups of adolescences. The three groups of adolescences were separated by the type of music they preferred listening to: â€Å"heavy, light, and eclectic music†(Schwartz Fouts, 2003). 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Before I left, we talked about ordering new contacts and new glasses since my prescription had changed. A month later I called my eye doctor’s office to see if my new contacts had come in since I had not heard from them. It seems that Dr. Thomason and I had a miscommunication, he thought I was comingRead MoreBossa Nova Essay1527 Words  | 7 Pagestowards the beach, the nice way in which she moves and sways, how attractive she is, finishing with the singer’s statement that she’s the most beautiful thing he’s ever seen go by. The musical style of the music on the Bossa Nova CD can be related to what we as Americans listen to as lounge music. It is very soothing, carefree and pleasurable. Through most of the CD the piano, string bass, flute, snare drum (played with a light brush) and female singing voice make up most of the punction of the CDRead MoreDescriptive Essay : Words, Words860 Words  | 4 PagesWords? What is the meaning of words? 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The positive effects of music increase the concentration level of the listener. It can also improve memoryRead MoreReaction Paper1370 Words  | 6 Pagesdescribe me. If I had to describe myself, I would say that I am very laid back and easy going. I do not let small things bother me. I feel you should â€Å"pick your battles†sort of speak. I think I take after my mom. Growing up I never saw her really angry at anyone. She always gets a long with everyone and I think she rubbed off on me. I am also friendly and caring. I am always concerned with how people feel and how I can help others. I enjoy talking and being around all different types of people. AnotherRead MoreMonroe’s Motivated Sequence Speech Eating Breakfast1391 Words  | 6 Pagesintimacy is not the goal, but being able to work together effectively is. It helps keep friendships vital and even makes a difference in casual relationships where you merely want ease. 3. Introduction: What is Interpersonal Communication? 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It requires individuals to reflect and to admit to their flaws. In order to communicate effectively it is important to know when to talk and listen. Peterson’s book is an excellent tool to enhance all types of relationships. SUMMARIZE! Petersen, J. C. (2007). Why don’t we listen better? Communicating and connecting in relationships. Tigard, OR: Petersen Publications. Peterson’s uses a variety of situation and scenarios to support a theory
Report on Entrepreneurship Business Global Factors
Question: Describe about the Report on Entrepreneurship for Business Global Factors. Answer: Introduction Entrepreneurship plays an important role in the development of an economy whether national or global. It is affected by several domestic as well as global factors. An entrepreneur has to consider all the factors affecting the entrepreneurial process. The domestic as well as global factors will not necessarily be always in favor of the process; sometimes they could be negative for the business too. Role of entrepreneurship in the development of the national and global economy Entrepreneurship is the capacity and willingness to innovate, organize and manage a business while taking calculated risks for the profits. An entrepreneur has to be a planner and a visionary for the venture to be successful. He should be passionate and motivated and must be able to calculate risk along with being flexible. The most important thing for entrepreneurship is managing- managing people, managing money and managing resources and managing the situation. Entrepreneurship serves a very important purpose by contributing to the continuous development of the economy of a nation (Colette, 2011). Entrepreneurship improves the economy of a nation as well as it also helps in improving global conditions. Employment opportunities for the people - entrepreneurship generate employment opportunities for the people. A steady income and a healthy job help tremendously in improving the economic conditions. Taxes helps the economy- taxes paid by the entrepreneurs help the government in making public expenditure and improving the scenario of the country. One entrepreneurial venture leads to development of another venture and that in turn boosts employment opportunities and improves economy. Entrepreneurship leads to development in technology- technological advancements helps improve the economic and living situation of a country. It not only adds to the national income of the country but also create social changes that help in the advancement of the nation. Entrepreneurship also leads to community development. Entrepreneurship also encourages trading with another countries. This not only makes the optimum use of the resources around the world but also leads to better relations between the two countries and improves the position of the countries on the financial platforms. The government of the U.A.E. has expanded their support to develop the entrepreneurial scenario of the country by facilitating, enabling, supporting and developing the policy of development and advocacy that removes barriers, training and capability development to increase productivity and competitiveness, incubation and access to finance and market access (Dubai SME, 2011). Key factors that influence Entrepreneurship Domestic factors- These are the internal factors of the country that can either promote entrepreneurial development or can be a hindrance in the process. These factors are (Bharat, 2013): Education scenario of the country- if a country has good education system and provides good opportunities for elementary and high level education then it is a factor that encourages entrepreneurial development. Health- higher the life expectancy and good health conditions improve the working capacity. Infrastructure- if a country has good infrastructure in terms of transport, electricity, postal system, telecommunication and public services then it is a positive factor in promoting entrepreneurship. Political stability and lack of corruption are the major factors that encourage people to become entrepreneurs. If the Legal system is not complex and supports the entrepreneurial practices then it is also a positive factor. Financial system, macro finance, credit and taxation- if all these are kept in alignment with the view to promote and develop entrepreneurship then it will be a positive factor. Income distribution high income inequity can be a major barrier to growth and entrepreneurship development. Global Factors these are the factors that are global in nature but affect the entrepreneurship development in all the countries whether in a positive or negative manner (Max, 2016). Sustainability and Environment- issues such as global warming, going green are very powerful forces in global terms and affect the business of each and every country. Technological advancement advancement provides business the leverage to develop and expand their markets. Emerging markets- any new market could be a potential opportunity for a business to expand its operations. Emergence of any new market will affect entrepreneurship of the related countries. Cultural and religious ideologies define how the business in the country is conducted. This also defines their business relations with other countries. Conclusion Entrepreneurship is the major factor that boosts the economy of the nation. It leads to development of the economy and strengthens its systems. The nation is benefited if it promotes entrepreneurship. The several factors that influence it are, technology, political stability, emerging markets, Current trends, technology and sustainability and environment to name a few. It is concluded that entrepreneurship helps in boosting the economy of the country and also strengthens its position on a global map. References Bharat (2013). Domestic Factors and Economic Development. [Online]. Available at URL: https://hubpages.com/education/Domestic-Factors-and-Economic-Development [Accessed on 19th October 2016]. Colette, S. (2011). How Entrepreneurs Improve the Economy. [Online]. Available at URL: https://www.brighthub.com/office/entrepreneurs/articles/47092.aspx [Accessed on 19th October 2016]. Dubai SME. (2011). The Role of Government in Supporting Entrepreneurship SME Development. . [Online]. Available at URL: https://www.oecd.org/mena/competitiveness/47246782.pdf. [Accessed on 19th October 2016]. Max, B. (2016). What Are Some Ways in Which Global Forces Affect Business Today? [Online]. Available at URL: https://smallbusiness.chron.com/ways-global-forces-affect-business-today-67573.html. [Accessed on 19th October 2016].
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