array caching

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tx_tom - 01 May 2006 13:20 GMT

I am looking for C# code to store and retrieve a 2 dimensional array in the
cache. I have seen code in this forum for caching arrays but ti does not
work. I'd be immensely grateful if anyone has an example.

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Göran Andersson - 01 May 2006 13:34 GMT

> I am looking for C# code to store and retrieve a 2 dimensional array in the
> cache. I have seen code in this forum for caching arrays but ti does not
> work. I'd be immensely grateful if anyone has an example.

Standard question #1:
What do you mean by "not working"?

A two dimensional array is an object, just like a one dimensional array.
It isn't harder to cache a two dimensional array just because it has
more dimensions.

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tx_tom - 02 May 2006 02:44 GMT

Hi Goran:

This is the code I tried to use. It is 2 different technigues to accomplish
the same thing but neither worked.

Thanks in advance

// Get the array from the cache:
MyType[] array = (MyType[]) Cache["key"];

private MyType[] GetArray()
{
// Try to get the return value.
MyType[] retVal = (MyType[]) Cache["key"];

// If the item does not exist, then
// add it here.
if (retVal == null)
{
// Add the array to the cache here.
retVal = <create array here>;

// Add the item to the cache.
Cache["key"] = retVal;
}

// Return the array.
return retVal;
}

>> I am looking for C# code to store and retrieve a 2 dimensional array in the
>> cache. I have seen code in this forum for caching arrays but ti does not
[quoted text clipped - 6 lines]
>It isn't harder to cache a two dimensional array just because it has
>more dimensions.

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Jon Skeet [C# MVP] - 01 May 2006 17:50 GMT

Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

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Jon Skeet - <skeet@pobox.com>
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tx_tom - 02 May 2006 02:48 GMT

Sure Jon:

This is the code I tried to use. It is 2 different technigues to accomplish
the same thing but neither worked.

Thanks in advance

// Get the array from the cache:
MyType[] array = (MyType[]) Cache["key"];

private MyType[] GetArray()
{
// Try to get the return value.
MyType[] retVal = (MyType[]) Cache["key"];

// If the item does not exist, then
// add it here.
if (retVal == null)
{
// Add the array to the cache here.
retVal = <create array here>;

// Add the item to the cache.
Cache["key"] = retVal;
}

// Return the array.
return retVal;
}

This is how I placed the array in the Cache. I think this works.

Cache["shArray"] = shArray;

>> I am looking for C# code to store and retrieve a 2 dimensional array in the
>> cache. I have seen code in this forum for caching arrays but ti does not
[quoted text clipped - 5 lines]
>See http://www.pobox.com/~skeet/csharp/complete.html for details of
>what I mean by that.

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Göran Andersson - 02 May 2006 15:03 GMT

For a two dimensional array you just declare the array as having two
dimensions:

MyType[,] array = (MyType[,]) Cache["key"];

> Sure Jon:
>
[quoted text clipped - 38 lines]
>> See http://www.pobox.com/~skeet/csharp/complete.html for details of
>> what I mean by that.

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array caching

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