Real world use cases for C# indexers?

Question

I\'ve seen lot of examples for c# Indexers, but in what way will it help me in real life situations.

I know the C# guru wouldn\'t have added this if it wasn\'t a ser

Answer 1

Microsoft has an example using an indexer to treat a file as an array of bytes.

public byte this[long index]
{
    // Read one byte at offset index and return it.
    get 
    {
        byte[] buffer = new byte[1];
        stream.Seek(index, SeekOrigin.Begin);
        stream.Read(buffer, 0, 1);
        return buffer[0];
    }
    // Write one byte at offset index and return it.
    set 
    {
        byte[] buffer = new byte[1] {value};
        stream.Seek(index, SeekOrigin.Begin);
        stream.Write(buffer, 0, 1);
    }
}