Declare either .Text, .Value, .Value2 using array to fetch data from excel - vb.net

Question

I use Excel automation with Excel interop. My code takes excel sheet using array fetch. As you can see below i take all of them as .Value2, however i would like to specify for example that one of my excel column to be taken as .Text. How to achieve that?
'Convert from interop object to native vb.net object, indexed 1 to length
Dim data As Object(,) = DirectCast(_xlWorkSheet.UsedRange.Value2, Object(,))
For row As Integer = 2 To data.GetUpperBound(0) - 1
Dim newDataRow As DataRow = dt.NewRow()
Dim dattime As DateTime = DateTime.FromOADate(data(row, 11))
Next

Answer 1

i have one column in excel that has format: [h]:mm:ss means hours could exceed clock hour so means there could be e.g 783:34:12. When i tried to use formatting for instance: NumberFormat ="#" or whatever else i always got wrong result.
Based on that description, I will assume that the value is entered into Excel as a numeric Double. i.e.: 783:34:13 equals 32.64875.
In VB.Net, you could generate a TimeSpan structure to yield the resulting day, hour, minutes and seconds components. In the following, rng is an Excel.Range representing a single cell.
Dim val As Double = CDbl(rng.Value2)
Dim ts As TimeSpan = DateTime.FromOADate(val) - DateTime.FromOADate(0)
Now if you wanted to format this TimeSpan as a string similar to that displayed in Excel, you could do something like this:
Dim s As String = String.Format("{0}:{1:00}:{2:00}", (ts.Days * 24) + ts.Hours, ts.Minutes, ts.Seconds)
The reason I am recommending this technique over getting the Text property of an Excel.Range is that the Text property will return exactly what you would see in Excel including the ever helpful "###" when the column is not wide enough to display the formatted value.
Edit To Address Comments:
can you explain why you do this: - DateTime.FromOADate(0) ?
Excel encodes a date-time value as a decimal number of 24 hour periods (days) from a specified date-time that has the value of zero. Your data is apparently making use of this fact to allow you to have a cell with a value of 783:34:12 (783 hours, 34 minutes, 12 seconds) or 32.64875 as a decimal value.
In order to retrieve the offset in (days, hours, minutes, seconds) the original value represents, you need to subtract date-time represented by its basis value (zero).
i saw mismatch e.g: in excel : 0:04:07 (real value behind is: 12:04:07 AM) after your function i get this: 0:04:06 (so 1 sec diffrence why is that?
I can not reproduce this issue. It is likely a rounding issue due too the limitations of floating point value representation.
Also, be advised that Excel supports two different date basis systems; the 1900 Date System (the default) and the 1904 Date System. The DateTime.FromOADate function does its conversion based on the 1900 Date System. The difference between these two systems is the date that is treated as zero. You should check the WorkBook.Date1904 property to see if you need to add addition days (1462 days) to the value retrieved from Excel when converting to a .Net DateTime.
This could effect the result of this code:
Dim dattime As DateTime = DateTime.FromOADate(data(row, 11))
See: Differences between the 1900 and the 1904 date system in Excel for more information.