How to declare an array of objects C# -

i'm making 2d tile map game. have cell class (tiles) makes cell objects have 4 attributes: topwall, bottomwall, leftwall, rightwall. wall may or may not there, attributes boolean true or false, , if true, line drawn down cell wall (not allowing player pass through cell). want declare (2 dimensional? in, row, , column) array of cell objects called map1 (as make game map). want set each member of array having specific wall attributes. here have:

cell.cs

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms;  namespace map {     public class cell : picturebox     {         bool leftwall;          bool topwall;          bool rightwall;         bool bottomwall;          public cell(bool topwall, bool rightwall, bool bottomwall, bool leftwall)         {             this.topwall = topwall;             this.rightwall = rightwall;             this.bottomwall = bottomwall;             this.leftwall = leftwall;         }     } } 

this me starting attempt making array of cell objects , set wall attributes: form1.cs

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms;  namespace map {     public partial class form1 : form     {         public form1()         {             initializecomponent();         }         /// <summary>         /// array of tiles         /// </summary>         //picturebox[,] boxes = new picturebox[4,4];         public void initiatearray()         {             cell[,] map1 = new cell[4, 4];              (int row = 0; row < 4; row++)             {                 (int column = 0; column < 4; column++)                 {                     map1[row, column] = new cell();                 }             }              map1[0, 0] = new cell(true, false, false, true);             map1[0, 1] = new cell(false, false, false, true);         }         /*int [][] walls = new int[][] {       new int[] {0,0}, new int[] {1,0,0,1},       new int[] {1,0}, new int[] {1,0,1,0},       new int[] {0,1}, new int[] {0,0,0,1},        new int[] {1,1}, new int[] {1,1,1,0},        new int[] {2,0}, new int[] {1,1,0,0},       new int[] {2,1}, new int[] {0,0,0,1},        new int[] {3,1}, new int[] {1,0,1,0},        new int[] {0,2}, new int[] {0,0,1,1},        new int[] {1,2}, new int[] {1,0,1,0},        new int[] {2,2}, new int[] {0,1,1,0}};*/            #region runtime load         /// <summary>         /// build map when window loaded         /// </summary>         /// <param name="sender"></param>         /// <param name="e"></param>         private void form1_load(object sender, eventargs e)         {             buildmap();         }         #endregion          #region build grid         /// <summary>         /// draw every tile on map         /// </summary>         public void buildmap()         {             (int row = 0; row < 3; row++)             {                 (int column = 0; column < 3; column++)                 {                     drawcell(row, column);                 }             }             //draw exit box             drawcell(1, 3);         }         #endregion          #region draw         /// <summary>         /// draw 1 tile         /// </summary>         /// <param name="row"></param>         /// <param name="column"></param>         public void drawcell(int row, int column)         {             map1[row, column] = new cell();             map1[row, column].height = 100;             map1[row, column].width = 100;             map1[row, column].borderstyle = borderstyle.fixedsingle;             map1[row, column].backcolor = color.burlywood;             map1[row, column].location = new point((map[row, column].width * column), (map[row, column].height * row));             this.controls.add(map1[row, column]);             // system.drawing.pen mypen;            // mypen = new system.drawing.pen(system.drawing.color.red);             //system.drawing.graphics formgraphics = this.creategraphics();               //formgraphics.drawline(mypen, 0, 0, 200, 200);             //mypen.dispose();             //formgraphics.dispose();         }            public void drawwalls(int row, int column)         {          }         #endregion     }   } 

it showing lot of errors , wondering if can see i'm going wrong. thanks.

first make sure picturebox has non-parameterized constructor implemented.

second , thrid map1[i] = new cell(); initialized matrix, need 2 nested loops traverse whole thing , need access using comma notation [row, col]. use row not in loop.

fourth missing 'new' @ end map1[0,0] = cell(true, false, false, true);