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2 and 3 are invalid and<br />
<br />
&nbsp;u cant say any thing abt 1 and 4 b'coz we cant term them AS ivvalid because in case 1 Customers may contain an object 'Item' which may be indexed <br />
and for case 4 customer may contain a function 'Item' which accepts an int and returns an object which may have a property Name..<br />
<br />

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Which one of the following code samples accesses the indexer property of the<br />
customers collection?<br />
<br />
1) customers.Item[1].Name<br />
2) customers.(1).Name<br />
3) customers.[1].Name<br />
4) customers.Item(1).Name<br />
5) customers[1].Name<br />
<br />
Answer: 1)
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Which one of the following code samples accesses the indexer property of the
customers collection?

1) customers.Item[1].Name
2) customers.(1).Name
3) customers.[1].Name
4) customers.Item(1).Name
5) customers[1].Name

Answer: 1)

accesses the indexer property

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).