What is the function that performed before insert a new row to grid

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C#

ASP.NET

SQL-Server

C#4.0

Hi all :)

I have a grid, and I want to get some default values to my insert and update parameters

which function can I use to do some thing like this ?

for example:

I have this "Ads" table
[Ad_ID] int
[Ad_Title] nvarchar
[Ad_Text] nvarchar
[Ad_Date] date
[Ad_Time] time
[Ad_AdminID] int
[Ad_StartDate] date
[Ad_EndDate] date
[Ad_FlagISActive] bit
[Ad_PhotoPath] nvarchar
[Ad_Language] char

the column in bold "[Ad_PhotoPath]" is the path of an image

when I insert or update a row, I use fileupload control in the edit template mode

but I can't add the file name to the path before I insert or update it

so please any one can tell me what the function that I can use to add the file name before insert or update the row ?

if there is any other way to do that please let me know



thank you all :)