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What does Dispose method do with the connection object?
Deletes it from the memory.
rjempo
- Sep 9th, 2007
It is important to note that connection.Dispose() actually closes the connection first.Hence I believe it is the preferred method of destroying a connection. Given that one should really Dispose...
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Can you declare the override method static while the original method is non-static?
No, you cannot, the signature of the virtual method must remain the same, only the keyword virtual is changed to keyword override.
gptnitesh
- Sep 11th, 2007
No you cannot declare the override method static while original method is non-static, not even vice versa.
Rajesh Ravindran
- Sep 11th, 2007
No, Because the Overrirde method or Overriden method should have same access attribute, same return type, same argument etc. If it is not same it will throw compiler error.
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Is there a way of specifying which block or loop to break out of when working with nested loops?
The easiest way is to use goto: using System;class BreakExample {public static void Main(String[] args) {for(int i=0; i<3; i++) {Console.WriteLine("Pass {0}: ", i);for( int j=0 ; j<100 ; j++ ) {if ( j == 10) goto done;Console.WriteLine("{0} ", j);}Console.WriteLine("This will not print");}done:Console.WriteLine("Loops complete.");}}
jmruizsr
- Sep 18th, 2007
Yes, there are ways to break out of nested loops. Although GOTO is allowed in C#, it is normally a bad idea, bad style, and indication of lack of good software development foundation of those wh...
venkatesh
- Oct 13th, 2006
In java there is no goto operator.I think we should use label statement for that
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What is the difference between the Debug class and Trace class?
Documentation looks the same. Use Debug class for debug builds, use Trace class for both debug and release builds.
vaibhav Tyagi
- Oct 2nd, 2007
the Debug and the Trace classes are available in the Microsoft .NET Framework. You can use these classes to provide information about the performance of an application either during applicatio...
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How is method overriding different from overloading?
When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class.
learnasp
- Oct 11th, 2007
Overriding a method involves changing the business logic og the method, however the return type and parameters remain same. However in overloading a method you can have multiple methods with same name but different signatures.
sahu
- Jan 9th, 2006
Ans:Answer: When overriding, you change the method behavior for a derived class. Overloading simply involves having a method with the same name within the class. function checkf(form) { var f = document.form1;if (document.form1.cmt.value=='') { alert('Please enter the comment'); return false; }}
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How can you overload a method?
Different parameter data types, different number of parameters, different order of parameters.
learnasp
- Oct 11th, 2007
A method can be overloaded by having different parameters as in different type of parameters and well different number of parameters.Also, if the parameter types are different than you can also have d...
sahu
- Dec 12th, 2005
Ans:Different parameter data types, different number of parameters, different order of parameters
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What is the role of the DataReader class in ADO.NET connections?
It returns a read-only dataset from the data source when the command is executed.
Rahul Prashant Singh
- Oct 14th, 2007
DataReader Class represents a read-only and forward-only stream of data.An instance of this class is used to hold the data returned by executing the Select statement in the DBCommand object using Executereader() method of the DBCommand Class.
swag
- Dec 24th, 2005
When the command is executed it provides a read-only farward-only dataset from the datsource which requires a connection to be open.
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Why do I get an error (CS1006) when trying to declare a method without specifying a return type?
If you leave off the return type on a method declaration, the compiler thinks you are trying to declare a constructor. So if you are trying to declare a method that returns nothing, use void. The following is an example: // This results in a CS1006 errorpublic static staticMethod (mainStatic obj)// This will work as wantedpublic static void staticMethod (mainStatic obj)
skmeer
- Oct 29th, 2007
If your method does not have any return type then mention void before that method or return 0
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The condition for If statement in C# is enclosed with in
A) ( )B) { }C) [ ]
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What is side by side execution?How is it related to assemblies?
maverick_dude
- Nov 30th, 2007
Side-by-side execution is the ability to install multiple versions of code so that an application can choose which version of the common language runtime or of a component it uses. Subsequent installa...
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Why does DllImport not work for me?
All methods marked with the DllImport attribute must be marked as public static extern.
Robertxie
- Jan 6th, 2008
It works perfectly. You can find the dialogue window by using "ALT+Tab" keyRobert
jbanx
- Apr 17th, 2007
Following is the example to use it properly This is from msdn for more visithttp://msdn2.microsoft.com/en-us/library/system.runtime.interopservices.dllimportattribute.aspxusing System;using System.Run...
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What is the output of Vectors.RemoveAt(1)
A) Removes the object whose key is 1B) Removes the object whose value is 1C) Removes the object at position 1
Kal_CSharp
- Jan 16th, 2008
Correct Answer: CRemoves the object at postion 1. Vectors.RemoveAt(int index); Default index value is 0. If the default value is not changed for it, it removes the second element from the collection.
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The assembly class is defined in
A) System.ReflectionB) SystemC) System.InteropServices
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How to retrieve an image from sql server into Image Control using C#
manoj_job
- Jan 21st, 2008
First save the image in a particular location(eg. c:Imagefirst.jpg) , in sql server save the full path of the image,then access it uisng C#..
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What is the difference between shadow and override
Override id used for variables and methods but override only used for methods.
whbloodworth
- Jan 25th, 2008
The best way, in my opinion, to understand the true meaning of the effects of using the "new" modifier in a virtual hierarchy is to think of it like this... The runtime wants to start at the...
whbloodworth
- Jan 25th, 2008
No, the VB.NET "shadow" is not exactly the same as the C# "new" override... even though it produces similar behaviour. To see the differences, look at the IL generated.
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1. Are there some features of C# language not supported by .NET?
Skill/Topic: AdvancedA) YesB) NoExplanation: For example some instances of operator overloading!
whbloodworth
- Jan 25th, 2008
With respect to multiple inheritance, I would have to say that the answer is "mostly" that C# does not support multiple inheritance. The "mostly" part does not take into accoun...
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Who calls the main method ??
subramanyam1981
- Jan 28th, 2008
The CLR calls the main method. operating system has nothing to do with.
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Which Variable type is best to choosen for accepting Null Values?
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What is the difference between the System.Array.CopyTo() and System.Array.Clone()?
The first one performs a deep copy of the array, the second one is shallow.
dotnetasit
- Feb 21st, 2008
I felt the need of this posting because I have seen postings (not only in this forum but also in many others) saying that "CopyTo() makes a deep copy and Clone() makes a shallow copy." ...
C# Interview Questions
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