In first time I draw, in the second, no.

[Alex Cutovoi]

I have a question. I created a NavyBatlle with sockets that the client or server sends the coordinates to hit the opponent, drawing and "X" ou a "O". My problem is: In the first time the data is send for the server, the figure is drawn, on the second, appears the following runtime error: "Invalid parameter used". Wasn't the error appears since the beginning? Thanks a lot for who helps me. Below the problematic server's piece: Ah, I've implemented the IDsposable interface in my Draw class: private void DrawX(int iX, int iY, Graphics G) { using(G) { Pen pColor = new Pen(Color.Blue); pColor.Width = 5; Point pA = new Point(iX, iY); Point pB = new Point(iX+30, iY+30); Point pA1 = new Point(iX+30, iY); Point pB1 = new Point(iX, iY+30); G.DrawLine(pColor,pA,pB); //Nessa parte é que dá problema G.DrawLine(pColor,pA1,pB1); } } The part that I created the class and call the method to get the coordinates: do { sData = Reader.ReadString(); using(Draw Desenho = new Draw()) { Desenho.GetCoordinates(sData, G); } }while(DataStream != null && sData != "Close connection"); On client I just call the Write method of my BinayWriter to(of course) send data on the stream. One more time thanks a lot. :laugh:

[Snowblind37]

I wonder if you need to refresh your connection after sending the first value stream. Or possibly re-set the object you are sending out. I have had problems before trying to re-send the same object that eventually gets corrupted. Hmmm, sorry no concrete answers but I suppose some possibilties to look at.

[Alex Cutovoi]

No, my connections are in threads. Talking about my object, I'm using the "using" keyword. I commented this part to see if was it that cause my problem but no. Man, I'don't know what I do. Am I answered your doubt? Thanks for help one more time