Merge pull request #231 from Sridhar-Sukumar/master

Remove IO reference and modifying APIs for Flutter XlsIO

Author: JayavigneshwaranG

lib/samples/xlsio/expenses_report/expenses_report.dart

@@ -57,7 +57,7 @@ class _ExpensesReportXlsIOState extends SampleViewState {
     final Workbook workbook = Workbook(0);
     //Adding a Sheet with name to workbook.
     final Worksheet sheet1 = workbook.worksheets.addWithName('Budget');
-    sheet1.showGridLines = false;
+    sheet1.showGridlines = false;
 
     sheet1.enableSheetCalculations();
     sheet1.getRangeByIndex(1, 1).columnWidth = 19.86;
@@ -157,7 +157,7 @@ class _ExpensesReportXlsIOState extends SampleViewState {
     chart.rightColumn = 5;
     sheet1.charts = charts;
 
-    final List<int> bytes = workbook.saveStream();
+    final List<int> bytes = workbook.saveAsStream();
     workbook.dispose();
 
     //Launch file.

lib/samples/xlsio/invoice/invoice.dart

@@ -61,7 +61,7 @@ class _InvoiceXlsIOState extends SampleViewState {
     //Accessing via index
     final Worksheet sheet = workbook.worksheets[0];
     sheet.name = 'Invoice';
-    sheet.showGridLines = false;
+    sheet.showGridlines = false;
 
     sheet.enableSheetCalculations();
     sheet.getRangeByName('A1').columnWidth = 4.82;
@@ -226,7 +226,7 @@ class _InvoiceXlsIOState extends SampleViewState {
     picture.lastRow = 7;
     picture.lastColumn = 8;
 
-    final List<int> bytes = workbook.saveStream();
+    final List<int> bytes = workbook.saveAsStream();
     workbook.dispose();
 
     //Launch file.

lib/samples/xlsio/yearly_sales/yearly_sales.dart

@@ -58,7 +58,7 @@ class _YearlySalesXlsIOState extends SampleViewState {
     //Accessing via index
     final Worksheet sheet = workbook.worksheets[0];
     sheet.name = 'Sales Report';
-    sheet.showGridLines = false;
+    sheet.showGridlines = false;
     final Worksheet sheet2 = workbook.worksheets.addWithName('Data');
     sheet.enableSheetCalculations();
 
@@ -265,7 +265,7 @@ class _YearlySalesXlsIOState extends SampleViewState {
 
     sheet.charts = charts;
 
-    final List<int> bytes = workbook.saveStream();
+    final List<int> bytes = workbook.saveAsStream();
     workbook.dispose();
 
     //Launch file.