{"id":8768,"date":"2020-04-28T12:54:11","date_gmt":"2020-04-28T12:54:11","guid":{"rendered":"https:\/\/www.monsterindia.com\/career-advice\/20-most-commonly-asked-wpf-interview-questions-8768\/"},"modified":"2023-03-23T13:23:46","modified_gmt":"2023-03-23T07:53:46","slug":"20-most-commonly-asked-wpf-interview-questions","status":"publish","type":"post","link":"https:\/\/www.foundit.sg\/career-advice\/20-most-commonly-asked-wpf-interview-questions\/","title":{"rendered":"20 most commonly asked WPF Interview Questions"},"content":{"rendered":"\n<p><span style=\"font-family: verdana,geneva,sans-serif; font-size: medium;\"><\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">Computers and all their myriad applications have been changing and improving our lives since their invention. And today\u2019s market values employees who are in touch with the most recent advancements in the various departments.<\/span><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">One of the major fields in information technology is building applications or apps. And WPF (Windows Presentation Foundation) is a powerful framework used for this purpose. Whether you are new to this or experienced in WPF architecture, there are some basic key concepts that you must keep in mind before you attend an interview.<\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Here is a list of the 20 most commonly asked WPF questions in an interview that you can go through before your next interview.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>1. What is the main function of WPF?<\/strong><\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">WPF is an application program interface that you can use to build applications. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>2. What are the advantages of WPF?<\/strong><\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">Using WPF can be advantageous for your project as it has: <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">a. Integrated multimedia <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">b. Accelerated hardware <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">c. Independent resolutions. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>3. What is the key difference between static resources and dynamic resources?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">These are markup extensions that you can use in order to define a resource. <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">Static Resource is used when you want the value of the resource to be determined at the time of loading. Dynamic Resource can be used when you want to change the value of the resource during runtime. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>4. What is the function of Prism?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">Prism is a framework that you can use to guide you in designing and developing rich, flexible and easily maintained Windows applications.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>5. What does Rotate Transform do?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can use this command to rotate your element clockwise be a certain angle about a point.<\/span><\/p>\n\n\n\n<p><strong><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You may also like:<\/span><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.monsterindia.com\/career-advice\/interviewing-for-your-first-job-avoid-these-mistakes\/\" target=\"_blank\" rel=\"noopener\">Interviewing for your first job? Avoid these mistakes<\/a><\/span><\/li><li><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.monsterindia.com\/career-advice\/3-mistakes-that-could-cost-you-your-dream-job\/\" target=\"_blank\" rel=\"noopener\">3 Mistakes that could cost you your dream job<\/a><\/span><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>6. What are dependency properties?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">They are properties that belong to a certain class, that you can use them for another class. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>7. In WPF, what are Freezable objects?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can lock down the state of an object to make it unchangeable, and such an object is called Freezable Object. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>8. What is Polyline?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">It is an object in AutoCAD, which is a collection of connected line, curved or straight. You can use this object to draw a polyline within some given points. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>9. What is MVVM?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">MVVM stands for Model View View Model. It is a framework that you need specifically to make applications in WPF. It has the same basic architecture as the <a href=\"https:\/\/www.monsterindia.com\/career-advice\/8-spring-mvc-interview-question-you-need-to-brace-up-for\/\" target=\"_blank\" rel=\"noopener\">MVC framework<\/a>.<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>10. What is the purpose of the value converter?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You use the value converter function when you want to create a bridge between target and source. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>11. What is Trigger and what are its types?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can use the trigger function to bring out the properties of an object that you want to template or to set the properties other template elements. They are used mainly when there is a change in any property or during certain event fires, to create visual effects or change in appearance. <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">It has the following types: <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">a. Event Trigger <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">b. Data Trigger <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">c. Property Trigger <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">d. MultiData Trigger <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">e. Multi-Trigger <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>12. In XAML, what are Binding Modes?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You use Biding Modes in XAML to define the direction of communication or data flow structure from the source. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>13. What are templates, and what are its types?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You use templates to define certain properties of a control, element or object. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>14. What are Routed Events?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You use Routed Event when you want to invoke handlers on more than one listeners in an element tree rather than a single object. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>15. What is the need for layout panels?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You need to layout panels to ensure that your control fit the screen of different environments. If you design your controls on specific fixed coordinates, then the model will fail if you move it to another environment with different screen sizes and fonts. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>16. What is Adorner?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You use Adorner to give visual clues to a user and add handles to elements. Adorners are bound to UIElement, and they presented on the surface above the adorned element. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>17. What types of commands are used in WPF?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can use commands to make your work easier and finish quicker. It can be used to separate semantics from an object or to share group actions within an application. <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">They are four main types: <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">a. Media <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">b. Edit <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">c. Application <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">d. Component<\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>18. What is Access Text Control?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can use this to convert an underscore preceded character to an Access key, which is then registered and can be used to raise an event if pressed. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>19. What is Serialization?<\/strong> <\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can use this process to convert an object\u2019s state to byte streams. <\/span><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\"><strong>20. How can we align data in WPF?<\/strong><\/span><\/h3>\n\n\n\n<p><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">You can align data using either Horizontal or Vertical Alignment. <\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">By using the left, right, center and stretch properties, you can set the child element within the parent element and its allocated layout space.\u00a0<\/span><\/p>\n\n\n\n<p><strong><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">Looking for WPF Jobs in top cities? Click at the links below:<\/span><\/strong><\/p>\n\n\n\n<p><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">\u2022 <a title=\"WPF Jobs in Bengaluru\" href=\"https:\/\/www.monsterindia.com\/search\/wpf-jobs-in-bengaluru-bangalore\" target=\"_blank\" rel=\"noopener\">WPF Jobs in Bengaluru<\/a><\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">\u2022 <a title=\"WPF Jobs in Pune\" href=\"https:\/\/www.monsterindia.com\/search\/wpf-jobs-in-pune\" target=\"_blank\" rel=\"noopener\">WPF Jobs in Pune<\/a><\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">\u2022 <a title=\"WPF Jobs in Chennai\" href=\"https:\/\/www.monsterindia.com\/search\/wpf-jobs-in-chennai\" target=\"_blank\" rel=\"noopener\">WPF Jobs in Chennai<\/a><\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">\u2022 <a title=\"WPF Jobs in Hyderabad\" href=\"https:\/\/www.monsterindia.com\/search\/wpf-jobs-in-hyderabad-secunderabad\" target=\"_blank\" rel=\"noopener\">WPF Jobs in Hyderabad<\/a><\/span><br><span style=\"font-size: 12pt; font-family: verdana, geneva, sans-serif;\">\u2022 <a title=\"WPF Jobs\" href=\"https:\/\/www.monsterindia.com\/search\/wpf-jobs\" target=\"_blank\" rel=\"noopener\">WPF Jobs<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Computers and all their myriad applications have been changing and improving our lives since their invention. And today\u2019s market values employees who are in touch with the most recent advancements in the various departments. One of the major fields in information technology is building applications or apps. And WPF (Windows Presentation Foundation) is a powerful [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8769,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[147],"tags":[],"class_list":{"0":"post-8768","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-interview-questions"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/posts\/8768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/comments?post=8768"}],"version-history":[{"count":2,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/posts\/8768\/revisions"}],"predecessor-version":[{"id":15849,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/posts\/8768\/revisions\/15849"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/media\/8769"}],"wp:attachment":[{"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/media?parent=8768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/categories?post=8768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.foundit.sg\/career-advice\/wp-json\/wp\/v2\/tags?post=8768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}