问题
C#, Visual studio 2010
When manipulating excel cells in C# (via an COM object), should I use the .Value or .Value2 ? that is
sheet.Cells[row + n, col].Value = "Hello world"
or
sheet.Cells[row + n, col].Value2 = "Hello world"
What is the difference between them to ?
Also, how do I set a cell format to "General" ?
sheet.Cells[row + n, col].NumberFormat = "XYZ"; // Not sure what should be here
Right now when I assign a cell with the number "0,34" and even if I do
sheet.Cells[row + n, col].NumberFormat = "@";
I get this "little error" sign up in the left corner in each cell
回答1:
To answer the first question you should read this article: http://blogs.msdn.com/b/eric_carter/archive/2004/09/06/225989.aspx
The optional parameters part doesn't apply anymore since C# 4.0 has optional parameters.
But there IS a difference (stated in the article)
The only difference between this property [Value2] and the Value property is that the Value2 property doesn’t use the Currency and Date data types. You can return values formatted with these data types as floating-point numbers by using the Double data type.
For the second question, have you tried setting a cell to 'General' and reading it out in code?
I think it's sheet.Cells[row + n, col].NumberFormat = "General", where "@" is pure text.
回答2:
In order to get the General type, as "magic string" that should to be assigned to the NumberFormat property try to use the empty string, e.g.
sheet.Cells[5, 7].NumberFormat = ""; // sets the cell type to the General type
来源：https://stackoverflow.com/questions/7724403/c-sharp-accessing-excel-formatting-cell-as-general