C# Accessing EXCEL, formatting cell as General -

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c#, visual studio 2010

when manipulating excel cells in c# (via com object), should use .value or .value2 ? is

 sheet.cells[row + n, col].value = "hello world"

or

 sheet.cells[row + n, col].value2 = "hello world"

what difference between them ?

also, how set cell format "general" ?

sheet.cells[row + n, col].numberformat = "xyz";  // not sure should here

right when assign cell number "0,34" , if 

sheet.cells[row + n, col].numberformat = "@";

i "little error" sign in left corner in each cell

to answer first question should read 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 difference (stated in article)

the difference between property [value2] , value property value2 property doesn’t use currency , date data types. can return values formatted these data types floating-point numbers using double data type.

for second question, have tried setting cell 'general' , reading out in code?

i think it's sheet.cells[row + n, col].numberformat = "general", "@" pure text.


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