sql - Filling Excel Workbook from sqlserver HRESULT: 0x800401A8 error -


i trying fill excel sheet sql server database , getting message code

hresult: 0x800401a8

please assist me.

   dim file string = "c:\techform.xlsx"       dim xlapp_2 new excel.application     xlapp_2.visible = false     xlapp_2.displayalerts = false     dim obook excel.workbook     obook = xlapp_2.workbooks.open(file)      dim osheet excel.worksheet       osheet = obook.worksheets(1)     objconnection.open()     adapter_view.selectcommand = new sqlcommand()     adapter_view.selectcommand.connection = objconnection     adapter_view.selectcommand.commandtext = "select * technical_ams_calc_gargantua "     adapter_view.selectcommand.commandtype = commandtype.text     adapter_view.fill(dataset, "gargantua_average_data")     datatable_calc = dataset.tables("gargantua_average_data")     adapter_view.dispose()     h integer = 0 datatable_calc.rows.count - 1           sog_avg = datatable_calc.rows(h).item("vpm_speed_through_water_avg")         osheet.range("e3").value = datatable_calc.rows(h).item("vpm_speed_through_water_avg")         osheet.range("f3").value = datatable_calc.rows(h).item("vpm_speed_through_water_max")            obook.saveas(file + " " + datatable_calc.rows(h).item("action_date") + ".xlsx", createbackup:=false)         obook.close()         xlapp_2.quit()     next

like this:

    dim file string = "c:\techform.xlsx"      dim xlapp_2 new excel.application     xlapp_2.visible = false     xlapp_2.displayalerts = false     dim obook excel.workbook     obook = xlapp_2.workbooks.open(file)      dim osheet excel.worksheet       osheet = obook.worksheets(1)     objconnection.open()     adapter_view.selectcommand = new sqlcommand()     adapter_view.selectcommand.connection = objconnection     adapter_view.selectcommand.commandtext = "select * technical_ams_calc_gargantua "     adapter_view.selectcommand.commandtype = commandtype.text     adapter_view.fill(dataset, "gargantua_average_data")     datatable_calc = dataset.tables("gargantua_average_data")     adapter_view.dispose()     h integer = 0 datatable_calc.rows.count - 1          sog_avg = datatable_calc.rows(h).item("vpm_speed_through_water_avg")         osheet.range("e3").value = datatable_calc.rows(h).item("vpm_speed_through_water_avg")         osheet.range("f3").value = datatable_calc.rows(h).item("vpm_speed_through_water_max")      next     obook.saveas(file + " " + datatable_calc.rows(h).item("action_date") + ".xlsx", createbackup:=false)     obook.close()     xlapp_2.quit()

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