c# - Insert [,] string array into a excel sheet -


i have [,] string array 40 rows 40 column items. trying write them excel sheet output keeps writing same word on first row of every column. doing wrong? 

   public static void writetofile(this string [,] result)     {          try         {             //open instance of excel              microsoft.office.interop.excel.application app = null;               app = new excel.application();             app.workbooks.add();             excel._worksheet sheet = app.activesheet;              sheet.name = "sheet 1";             int resultcount = result.length;                   (int = 0; < 40; i++)                 {                     (int j = 0; j < 40; j++ )                     {                          sheet.cells[i].value = result[i,j];                         j++;                     }                     i++;                 }

if got array rows @ first dimension , columns @ second dimension, can write:

sheet.range[sheet.cells[1,1], sheet.cells[40,40]].value = result;

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