Clipboard Problem in Blocks

HI

 

I am using following code to get Block instances .

//Get Block instances of Block definition

dsVarBlockInstances = (object[])bBlockDefinition.GetBlockInstances();

but the problem is when i copy(Cntr + C) and Paste (Cntr + V) ..

following code returning incorrect objects counts

Always counting clipboard block also..

 

 

I wanted to know How to clear clipboard..

 

Best Regards 

Fathima