Hi Diji Varghese,
Thanks for considering Aspose.
- is it support grouping/subtotal/treeview functions
Yes, the GridWeb supports, kindly check the following featured demos (the demo solutions are automatically installed when you use Grid’s msi installer to install the control):
grouping
subtotaling
treeview
- how can print/print preview the grid directly
Well, the feature is not supported, but you may use Browser’s option (e.g…, IE) to print the grid for your need.
- how can handle large data like 300000 records
Well, manipulating huge data e.g…, 300000 records would require huge amount of memory and resources. I think you may try some options:
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Try splitting 300000 records into multiple worksheets in an excel file or workbooks (excel files).
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Use Paging option (e.g…, GridWeb.EnablePaging = true) to accordingly.
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Try to use Style formattings where necessary, create style object (TableItemStyle class) with common formattings and apply the style to the cells.
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Try set GridWeb.EnableSmartNavigation to set to false, it will also improve performance to some extent.
Thank you.