How to delete a row in a grid in C# windows phone 8.1 -

i have started developing windows phone application i'm creating row in grid dynamically. upon conditions need delete row , content in row.

here sample code.

        result = e.parameter string;                   string[] acst = result.split('|');         int j = 0;         root2.rowdefinitions.add(new rowdefinition() { height = new gridlength(10) });         (int = 6; < acst.length - 1; i++)         {             textblock mytextblock = new textblock();             mytextblock.name = "txtdetails" + root2.children.count + 1;             mytextblock.text = acst[i + 1];             if (mytextblock.text != "")             {                 if (mytextblock.text.trim() != "0.00") // if result 0.00 have delete content in row.                 {                     if (j == 0)                     {                              mytextblock.fontsize = 14;                             mytextblock.istextscalefactorenabled = false;                             mytextblock.horizontalalignment = horizontalalignment.stretch;                             mytextblock.verticalalignment = verticalalignment.center;                             grid.setcolumn(mytextblock, 1);                             grid.setrow(mytextblock, (i) / 6);                             j++;                      }                     else if (j == 1)                     {                              mytextblock.fontsize = 14;                             mytextblock.istextscalefactorenabled = false;                             mytextblock.visibility = visibility.collapsed;                             mytextblock.horizontalalignment = horizontalalignment.center;                             mytextblock.verticalalignment = verticalalignment.center;                             grid.setcolumn(mytextblock, 2);                             grid.setrow(mytextblock, (i) / 6);                             j++;                      }                     else if (j == 2)                     {                              mytextblock.fontsize = 14;                             mytextblock.istextscalefactorenabled = false;                             mytextblock.textwrapping = textwrapping.wrap;                             mytextblock.horizontalalignment = horizontalalignment.left;                             mytextblock.verticalalignment = verticalalignment.center;                             grid.setcolumn(mytextblock, 3);                             grid.setrow(mytextblock, (i) / 6);                             j=0;             root2.rowdefinitions.add(new rowdefinition() { height = new gridlength(60) });                      }                                             }                      root2.children.add(mytextblock);             }                 else                 {                      root2.rowdefinitions.removeat((i / 6)); // here i'm getting arugument exception                 }             } 

for example if mytextblock.text = 0.00 in third column (j=2 in case). need remove content in column 1 , 2 or delete thst particular row.

i've tried "root2.rowdefinitions.removeat" there getting arugument exception. i'm missing?

any highly appreciated.

initially grid has 1 row creating index 0. when executing root2.rowdefinitions.removeat((i / 6)); getting root2.rowdefinitions.removeat(1); should use root2.rowdefinitions.removeat((i / 6)-1); solve exception

to answer second question code confusing. listing some

 1: why starting loop 6 2: why dividing i/6 3: getting result