Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Create a C# program named ConferencesDemo for a hotel that hosts business conferences. Allows a user to enter data about five Conference objects and then displays them in order of attendance from smallest to largest.

The Conference class contains fields for the following:

  • group - The group name (as a string)
  • date - The starting date (as a string)
  • attendees - The number of attendees (as an int)

Include properties for each field.

Also, include an IComparable.CompareTo() method so that Conference objects can be sorted in order from least to greatest attendees.

Your output for each conference should match the following:

NAME Conference starts on DATE and has ATTENDEES attendees
 
using System;
using static System.Console;
class ConferencesDemo
{
   static void Main()
   {
      // Write your main here
   }
}
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Follow-up Question

I have an error in the code:

Failed : ConferenceClassIComparableTest.ConferenceTest `Conference` class should implement `IComparable` interface Expected: True But was: False at ConferenceClassIComparableTest.ConferenceTest () [0x00000] in <a9f68112596545e395054a4bf32f46b4>:0

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Hello, I've put the code in but i'm getting an error.

Unhandled Exception: System.ArgumentNullException: Value cannot be null. Parameter name: s at System.Int32.Parse (System.String s) [0x00003] in <7b90a8780ac4414295b539b19eea7eea>:0 at ConferencesDemo.Main () [0x00049] in <2548cd4334a74f9da563c01621fa757b>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentNullException: Value cannot be null. Parameter name: s at System.Int32.Parse (System.String s) [0x00003] in <7b90a8780ac4414295b539b19eea7eea>:0 at ConferencesDemo.Main () [0x00049] in <2548cd4334a74f9da563c01621fa757b>:0 

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Follow-up Question

I have an error in the code:

Failed : ConferenceClassIComparableTest.ConferenceTest `Conference` class should implement `IComparable` interface Expected: True But was: False at ConferenceClassIComparableTest.ConferenceTest () [0x00000] in <a9f68112596545e395054a4bf32f46b4>:0

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Follow-up Question

Hello, I've put the code in but i'm getting an error.

Unhandled Exception: System.ArgumentNullException: Value cannot be null. Parameter name: s at System.Int32.Parse (System.String s) [0x00003] in <7b90a8780ac4414295b539b19eea7eea>:0 at ConferencesDemo.Main () [0x00049] in <2548cd4334a74f9da563c01621fa757b>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentNullException: Value cannot be null. Parameter name: s at System.Int32.Parse (System.String s) [0x00003] in <7b90a8780ac4414295b539b19eea7eea>:0 at ConferencesDemo.Main () [0x00049] in <2548cd4334a74f9da563c01621fa757b>:0 

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