help w/ using a var in a changing a property

Question

Hey all Have a problem that is twisting my mind into a pretzel. I am wanting to use a int variable in a line of code inside a function. I am passing into the function which button to alter background image in the box variable. I really do not want to type out 20 lines of code for each button. Here is the code snippet. private void track(string turn int box) { if (turn = x) { this.btnPos[box].BackgroundImage = global::TicTacToe.Properties.Resources.x; // Set boxes array position 1 to x boxes[1] = x; // Change whos turn it is. whosturn = o; this.plTurn.BackgroundImage = global::TicTacToe.Properties.Resources.o; } else { this.btnPos[box].BackgroundImage = global::TicTacToe.Properties.Resources.o; // Set boxes array position 1 to x boxes[1] = o; // Change whos turn it is. whosturn = x; this.plTurn.BackgroundImage = global::TicTacToe.Properties.Resources.x; When I debug the app I keep getting tictactoe.form1 does not contain a definition for btnPos There are definitions for btnPos1 btnPos2.....btnPos9. Main reason for wanting to have a function is that the teacher only gives an A if you compress the code functionality down as much as possible. Any help or pointers would be appreciated.

Alan · Answer

One way of dealing with this is to put your Buttons into an array: // declare private Button array field private Button[] boxes; public Form1() { InitializeComponent(); // add this line to form's constructor to initialize array boxes = new Button[]{btnPos1 btnPos2 btnPos3 btnPos4 btnPos5 btnPos6 btnPos7 btnPos8 btnPos9}; } Notice now that boxes[0] contains btnPos1 and boxes[8] contains btnPos9 so you might have to reduce the array indices by one in your method to reflect this.