Button disappears but the other column members of the row remains visible in datagridview c# -

i writing code make sure if translate button pressed new row appears row members except string text visible..now have written code makes button disappear , members still visible.

this view after button pressed..

now button invisible other members still visible.this code have tried..

    private void datagridview1_cellcontentclick(object sender, datagridviewcelleventargs e) {     bool ce = false;     bool check = true;     column_handling();     datagridviewtextboxcell c = new datagridviewtextboxcell();     if(!(datagridview1.rows[e.rowindex].selected))     {         datagridview1.rows[e.rowindex].selected = false;         if (e.columnindex == 10)         {             if((convert.toint16(this.datagridview1.rows[e.rowindex].cells[0].value) == convert.toint16(this.datagridview1.rows[e.rowindex + 1].cells[0].value)) && (convert.toint16(this.datagridview1.rows[e.rowindex].cells[1].value) == convert.toint16(this.datagridview1.rows[e.rowindex + 1].cells[1].value)))             {                 ce = true;             }             if(!ce)             {                 datarow dt = datarows.newrow();                 dt[0] = this.datagridview1.currentrow.cells[0].value.tostring();                 dt[1] = this.datagridview1.currentrow.cells[1].value.tostring();                 dt[2] = this.datagridview1.currentrow.cells[2].value.tostring();                 dt[3] = this.datagridview1.currentrow.cells[3].value.tostring();                 dt[4] = this.datagridview1.currentrow.cells[4].value.tostring();                 dt[5] = this.datagridview1.currentrow.cells[5].value.tostring();                 dt[6] = this.datagridview1.currentrow.cells[6].value.tostring();                 dt[7] = this.datagridview1.currentrow.cells[7].value.tostring();                 dt[8] = this.datagridview1.currentrow.cells[8].value.tostring();                 dt[9] = this.datagridview1.currentrow.cells[9].value.tostring();                 datarows.rows.insertat(dt, e.rowindex + 1);                 var row = this.datagridview1.rows[e.rowindex + 1];                 datagridviewcolumn column = datagridview1.columns[2];                 datagridviewcell cella = new datagridviewtextboxcell();                 cella.style.backcolor = color.wheat;                 column.celltemplate = cella;                 var cell = new datagridviewtextboxcell();                 cell.value = string.empty;                 var cell1 = new datagridviewtextboxcell();                 cell1.value = string.empty;                 var cell2 = new datagridviewtextboxcell();                 cell2.value = string.empty;                 var cell3 = new datagridviewtextboxcell();                 cell3.value = string.empty;                 var cell4 = new datagridviewtextboxcell();                 cell4.value = string.empty;                 var cell5 = new datagridviewtextboxcell();                 cell5.value = string.empty;                 var cell6 = new datagridviewtextboxcell();                 cell6.value = string.empty;                 var cell7 = new datagridviewtextboxcell();                 cell7.value = string.empty;                 var cell8 = new datagridviewtextboxcell();                 cell8.value = string.empty;                 var cell9 = new datagridviewtextboxcell();                 cell9.value = string.empty;                 var cell10 = new datagridviewtextboxcell();                 cell10.value = string.empty;                 row.cells[10] = cell;//the button column                 row.cells[0] = cell2;                 row.cells[1] = cell3;                 row.cells[3] = cell4;                 row.cells[4] = cell5;                 row.cells[5] = cell6;                 row.cells[6] = cell7;                 row.cells[7] = cell8;                 row.cells[8] = cell9;                 row.cells[9] = cell10;                 cell.readonly = true;                 datagridview1.readonly = true;                 datagridview1.refresh();             }             else if (!cao)             {                 datagridview1.rows[e.rowindex + 1].visible = true;                 var row = this.datagridview1.rows[e.rowindex + 1];                 var cell = new datagridviewtextboxcell();                 cell.value = string.empty;                 row.cells[10] = cell;                 cell.readonly = true;                 datagridview1.refresh();                 cao = true;             }             else if (ce)             {                 datagridview1.rows[e.rowindex + 1].visible = false;                 var row = this.datagridview1.rows[e.rowindex + 1];                 var cell = new datagridviewtextboxcell();                 cell.value = string.empty;                 row.cells[10] = cell;                 cell.readonly = true;                 datagridview1.refresh();                 cao= false;             }         }     } }