gcSpreadSheet1.Sheets[0].DefaultColumnWidth = 30;
gcSpreadSheet1.Sheets[0].DefaultRowHeight = 20;
gcSpreadSheet1.Sheets[0].Cells(0, 0).Text = "test";
gcSpreadSheet1.Sheets[0].ReferenceStyle = GrapeCity.Windows.SpreadSheet.Data.ReferenceStyle.A1;
listBox1.Items.Add(gcSpreadSheet1.Sheets[0].LastNonEmptyRowIndex.ToString());
gcSpreadSheet1.Invalidate();
GcSpreadSheet1.Sheets(0).DefaultColumnWidth = 30
GcSpreadSheet1.Sheets(0).DefaultRowHeight = 20
GcSpreadSheet1.Sheets(0).Cells(0, 0).Text = "test"
GcSpreadSheet1.Sheets(0).ReferenceStyle = GrapeCity.Windows.SpreadSheet.Data.ReferenceStyle.A1
ListBox1.Items.Add(GcSpreadSheet1.Sheets(0).LastNonEmptyRowIndex.ToString())
GcSpreadSheet1.Invalidate()