Which of the following is a requirement when merging modified data into a DataSet?

  1. Home

- Online Exam Test Papers | - MCQs[multiple choice questions and answers ] | - Mock Test Papers | - Practice Papers | - Sample Test Papers |

Question:
Which of the following is a requirement when merging modified data into a DataSet?

1.A primary key must be defined on the DataTable objects

2.The DataSet schemas must match in order to merge

3.The destination DataSet must be empty prior to merging

4.A DataSet must be merged into the same DataSet that created it.

More MCQS Questions and answers

  1. An ASP.NET page uses a Datagrid displays employee information.The Web application supports a large number of concurrent users, who will be saving data from the grid back to the database. It is important that the Web application doesn’t overwhelm the Web Server.
  2. Does MVC 6 was introduced new JSON project-based structure?
  3. What are the various types of filters in an ASP.NET MVC application?
  4. What is/are the predefined TraceListener(s) in ASP.Net
  5. Which Kind Of data we can store in viewstate
  6. Which namespace is used for ASPX View Engine?
  7. Which of the followings are Actionselectors?
  8. Which of these classes maps to the tag <input type=”checkbox”/>
  9. . Which of the following operations can you NOT perform on an ADO.NET DataSet?
  10. . You have a TextBox control and a Help button that the user can press to get help on allowable values. You validate the data entered by the user in the TextBox control. If the user enters an invalid value, you set the focus back in the control using the Cancel property of the CancelEventArgs. A user reports that once he enters invalid data in the text box, he cannot click the Help button. What should you do to correct the problem?
  11. A project on which you are working calls for you to store small amount of frequently changing information about a page on the client.For this project, security is not a worry. Which is the best method to use?
  12. A __________ control defaults to displaying the files in the current directory?
  13. By default, ASP.NET store SessionIDs in ____
  14. Can you call SQL Trigger from ASP.NET application explicitly?
  15. Do I need IIS to develop a Web application in ASP.NET 2.0?
  16. For separating server-side code from client-side code on a ASP.NET page, what programming model should you use?
  17. How can you come out from the c# windows Forms Application?
  18. How can you get the ColumnName,DataType ColumnSize, IsKeyColumn,IsAutoIncrement of the table from the dataset?
  19. How does ASP.NET store SessionIDs by default?
  20. How to find out what version of ASP.NET I am using on my machine?
  21. How will you specify the Cache Location?
  22. If I’m developing an application that must accommodate multiple security levels though secure login and my ASP.NET web application is spanned across three web-servers (using round-robin load balancing) what would be the best approach to maintain login-in state for the users?
  23. In order for hidden-field values to be available during page processing, you must submit the page using an HTTP POST command.
  24. In order for query string values to be available during page processing, you must submit the page using an HTTP GET command.
  25. The model is a ____
  26. We have defined one page_load event in aspx page and same page_load event in code behind who will run first?
  27. what are the Activation modes for .NET Remoting?
  28. What debugging tools come with the .NET SDK?
  29. What is ActionResult()?
  30. What is the last stage of the Web forms lifecycle?
  31. What is the name of the configuration files that the App_Start folder contains?
  32. What is the name of the Page object’s property that determines if a Web page is being requested without data being submitted to the server?
  33. What is the name of the property of ASP.NET page that you can query to determine that a ASP.NET page is being requested not data being submitted to web server?
  34. What namespace does the Web page belong in the .NET Framework class hierarchy?
  35. What Request Processing technique follows ASP.Net?
  36. What’s the difference between Response.Write() and Response.Output.Write()?
  37. Where we can assign value to Static read only member variable of a static class?
  38. Where would you define application and session level events?
  39. Which file you should write for the connection string so that you can access it in all the web pages for the same application?
  40. Which of the following events will fire when the Insert key is pressed?
  41. Which of the following is a requirement when merging modified data into a DataSet?
  42. Which of the following represents the best use of the Table, TableRow, and Table-Cell controls?
  43. Which of the function is used to check textbox only contain number?
  44. Which of these files takes the web application in offline mode?
  45. While creating a Web site with the help of Visual Studio 2005 on a remote computer that does not have Front Page Server Extensions installed, which Web site type will you create in Visual Studio 2005?
  46. WIF enables you to create a custom token. To be able to use the token, you must create a custom token handler by overriding which of the following?
  47. You are creating an order-tracking application using a Visual C# .NET Windows application. When you are unable to track a particular order number entered by the user, you need to raise an exception. Which of the following options will help you to raise an exception?
  48. You are designing a Windows Form that enables you to add a new product to the product catalog of your company. You need to validate the controls as the user enters the data. If incorrect data is entered in the field, you should set the focus back to the control and ask the user to enter the correct data. Which of the following events will you use to validate user input?
  49. You have designed a logon form with two TextBox controls named txtUserName and txtpassword. You want to ensure that the user can enter only lowercase characters in the controls. Which of the following solutions will fulfill this requirement using the simplest method?
  50. ___ attributes can be used for data validation in MVC.
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!