I am creating an Excel workbook using VB.NET, and have run into a
problem. Excel at times insists on reformatting data that I enter
into cells, e.g., converting "01234" to "1234", and this screws me
up when I need to read the data back. When I run into this problem
using Excel interactively I simply change the cell Number format
from "General" to "Text", but I haven't been able to figure out
how to do this using VB.NET. Here is a code sample:

Dim wb as Microsoft.Office.Interop.Excel.Workbook

[...workbook is created...]

Dim style as Microsoft.Office.Interop.Excel.Style

style = wb.Styles.Add("Style1")
style.Font.Name = "Arial"
style.Font.Bold = True
style.Font.Size = 12
style.Interior.Pattern = Microsoft.Office.Interop.Excel.XlPattern.xlPattern Solid
style.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlighLe ft

I use more than one style, and once I've created a style with the
features I want I apply it to the ranges where I am entering data.
Styles also have a "NumberFormat" property, and I would think that
this somehow could be used to set cell format to "Text". But if,
for example, I try

style.NumberFormat = "Text"

all that happens is that I end up with a weird custom format.
Nothing else I try seems to work either. Can anyone tell me how
to do what I am trying to do?
--
John Brock