问题
Trying to write information in Excel worksheet But have some strange problems ;) i looked info on Google but no result.. So plz help )
I Add reference Microsoft.excel 14.0 Object Library and also Import Microsoft.Office.interop
I need to get Value from specific cell so i use command Checker = shXL.cells(1,1). And here i don't have Value.... i only got this (Equal / GetHashCode / GetType / toString) So question is WHY i don't have (.Value) for .cells and where is an Error
Dim appXL As Excel.Application
Dim wbXL As Excel.Workbook
Dim wbsXL As Excel.Workbooks
Dim shXL As Excel.Worksheet
Dim Checker As Integer
appXL = CreateObject("excel.application")
appXL.Visible = True
wbsXL = appXL.Workbooks
wbXL = wbsXL.Open("D:\Некорректные Переключения\Base.xlsx", , , , 12121)
shXL = wbXL.ActiveSheet
Checker = shXL.Cells(1, 1).value()
Best Regards and THX!
回答1:
That's because .Cells() returns an object.
You can try converting it to a Excel Cell object in another step, or you can try this (for example):
shXL.Range("A2").Value
With conversion will be:
Dim xRng As Excel.Range = CType(shXL.Cells(3,3), Excel.Range)
Dim val As Object = xRng.Value()
回答2:
With Excel interop, a lot of the time a return value will be in the form of an Object so you need to cast to the correct type to get it's actual properties.
So do something like this (my VB is rusty so may not be completely correct)...
Dim rng as Excel.Range
rng = CType(shXL.Cells(1, 1), Excel.Range)
Checker = rng.Value
Note: I've separated it out into two lines because it's important not use double-dot references with Office interop (e.g., Worksheet.Cell.Value) because you end up with objects you can't release, which will cause issues with Excel not closing properly.
Note2: the .Value property also returns as an object so you'll probably want to cast that too
来源：https://stackoverflow.com/questions/23004274/vb-net-excel-worksheet-cells-value