How to compare two Hashtables?(C#)

split the if out

edited Dec 21, 2011 at 14:11

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I am developing a small RTS in C#(with XNA).

I'm setting each unit "goto" position as the vector they should go to. Everything works fine if I don't compare the two Hashtables, but when I do, I get this "NullReferenceException was unhandled" annoying error.

Here's the piece of code I'm getting the error on:

if ( ((float)unit[(int)selectedunits[I+"ID"] + "posX"] !=  (float)cgoto[(int)selectedunits[I+"ID"] + "X"])   &&  ((float)unit[(int)selectedunits[I+"ID"] + "posY"] !=  (float)cgoto[(int)selectedunits[I+"ID"] + "Y"]) )

Hopefully this is specific enough.

I am developing a small RTS in C#(with XNA).

I'm setting each unit "goto" position as the vector they should go to. Everything works fine if I don't compare the two Hashtables, but when I do, I get this "NullReferenceException was unhandled" annoying error.

Here's the piece of code I'm getting the error on:

if (((float)unit[(int)selectedunits[I+"ID"] + "posX"] != (float)cgoto[(int)selectedunits[I+"ID"] + "X"])  && ((float)unit[(int)selectedunits[I+"ID"] + "posY"] != (float)cgoto[(int)selectedunits[I+"ID"] + "Y"]))

Hopefully this is specific enough.

I am developing a small RTS in C#(with XNA).

I'm setting each unit "goto" position as the vector they should go to. Everything works fine if I don't compare the two Hashtables, but when I do, I get this "NullReferenceException was unhandled" annoying error.

Here's the piece of code I'm getting the error on:

if ( ((float)unit[(int)selectedunits[I+"ID"] + "posX"] !=  (float)cgoto[(int)selectedunits[I+"ID"] + "X"])  &&  ((float)unit[(int)selectedunits[I+"ID"] + "posY"] !=  (float)cgoto[(int)selectedunits[I+"ID"] + "Y"]) )

Hopefully this is specific enough.