Generics Dictionary - modify ContainsKey and Key Lookup

[Guest]

Hi

I have a class that inherits from Generics Dictionary
The string that is used for the key is passed thru-out my pgm and sometimes
it has modifiers added to the key string that are used in the system.

The problem is now I have to strip the modifer to lookup in the Dictionary
and I have to copy this code whenever I need to lookup the key or if more
modifers are added

Is there someway for me to override the way the Dictionary Lookups keys
so I can write the code to strip the modifer in one place so when I do a
ContainsKey
of this[sFileName][sKey] - if will look for key and if not found try to find
again after replace????

Thanks



if (this[sFileName].ContainsKey(sKey))
{
return (this[sFileName][sKey].Info);
}
else if (this[sFileName].ContainsKey(sKey.Replace("#","")))
{
return (this[sFileName][sKey.Replace("#","")]Info);
}
else if (this[sFileName].ContainsKey(sKey.Replace("^","")))
{
return (this[sFileName][sKey.Replace("^","")]Info);
}

 

[Nicholas Paldino [.NET/C# MVP]]

You can implement the IEqualityComparer<T> interface, implementing the
Equals and GetHashCode methods to work on the modified keys for comparison,
and then pass that implementation to the dictionary.

 

[Jeffrey Tan[MSFT]]

Hi,

Have you reviewed Nicholas Paldino [.NET/C# MVP]'s reply to you? Does it
resolve your question? If you still need any help, please feel free to
feedback, thanks.

Best regards,
Jeffrey Tan
Microsoft Online Community Support
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