Reading Array Values using EnvDTE.GetExpression

Question

Hi,

When i tried to read the byte array using EnvDTE.GetExpression as below using the Expression.Item() function it is too slow

EnvDTE.Expression byteExprmn=EnvDTE.Expression .GetExpression("ByteArrayName",true,5)

EnvDTE.Expressions  byteData=byteExprmn.DataMembers;

I am retrieving each element of the array using Item function

byte[] retArray=new byte[byteExprmn.DataMembers.Count];

for(int i=1;i<=retArray.Length;i++)
{

   retArray[i]= Convert.ToByte(byteData.Item(i));
}

Is there any alternative way to get Arrays from Expressions Because this method is too slow.
Please let me know is anything wrong in the above code.
Thanks in Advance.

Answer 1

Hi Vicky,

I think the way you use to read Array Values using EnvDTE.GetExpression is good. But there is a error in your code, please replace

 retArray[i]= Convert.ToByte(byteData.Item(i));

by

 retArray[i]= Convert.ToByte(byteData.Item(i+1).Value);

And please refer this code which achieve the same function as yours, hope this helps.

EnvDTE.Expression byteExprmn = _applicationObject.Debugger.GetExpression("ByteArrayName", true, 100);
EnvDTE.Expressions byteData = byteExprmn.DataMembers;
byte[] retArray = new byte[byteExprmn.DataMembers.Count];
int pos=0;
foreach(EnvDTE.Expression exp in byteData)
{
   retArray[pos++] = Convert.ToByte(exp.Value);
}

Please let me know if you have any questions.

Best Regards,
Nancy

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Answer 2

Hi Nancy,

         Thanks for your reply. And sorry about the error it was a typing mistake.

When i tried with foreach instead of for loop to iterate array values i get the OutOfMemory Exception.

But if i use for loop i will not get any Exception. But the problem related with this is it is too slow

I am reading a byte array of size 524288.So, my question is there any alternate way to get array

values little faster  from Debugger.

Thanks,

Answer 3

Hi Vicky,

Sorry for the delay.

Yes, I have tested if the array is large, it will be too slow. But in my opinion, if the array is too large, why don't you input these values to a file?

Best Regards,
Nancy

---

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Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.

Answer 4

Hi Nancy,
            Thank you for your suggestion.

Sorry this seems to be silly but how can i put these values to the file without reading them.

Can u please tell me how to do it. Actuallly the array contains the pixel values of the image

by reading the array values i need to recreate the image.

So, My question is IS There any other way of reading array  value from debugger Expression.Item()?

Can i read any any variable values  in AddIn from current solution? so that i can read array from solution directly?

Thanks in Advance,

Vicky