For various reasons I initialize datetime fields in a SQL 2005 table to 0 instead of NULL, meaning the fields will show something like '1900-01-01' in a gridview with AutoGeneratedFields.
To get rid of these I use the following code in the Gridviews RowDataBound event:
If e.Row.RowType = DataControlRowType.DataRow
begin
for I := 0 to e.Row.Cells.Count - 1 do
begin
if (pos(InitDateStr,e.Row.Cel
end;
end;
It works nicely... but for cells of all types. Not just datetime cells. It means it also empties a stringcell, should the content happen to include the text '01-01-1900' (format depending of the language settings).
So, how can I tell if a cell is bound to a datetime / smalldatetime field in the SQL DB, to only clearing the right cells ?
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Hi samtran0331,
Thanks for your reply and sorry for not making it clear in the question, but the variable "InitDateStr" is initialized with "InitDateStr := datetostr(0));", and therefore holds the string to look for, depending on the language setting. So the line "if (pos(InitDateStr,e.Row.Cel
But, I need to be sure it only happenswith text in those cells which are originally populated by a datetime or smalldatetime column from the SQL DB.
is datetostr a .Net function I don't know about? or is it yours?
....if you use the row's dataitem instead of the row's cell's text property, you are actually working with the data, and it has a getype....
so instead of: e.Row.Cells...
if you were using e.Row.DataItem(i), you actually can check
e.Row.DataItem(i).GetType
the datetostr function is in the sysutils unit, but it works fine in .Net.
the "e.Row.DataItem(i).GetType
DataItem expects a tobject (System.object) and not the i as integer;
I tried with e.row.cells[i].gettype and I do get a system.type out of it, but I do not know how to test it to see if it is a datetime type.
Eks.
var t : system.type;
t := e.row.cells[i].gettype;
if t.gettype.gettypecode = typecode.datetime then.... does not work(says operator not supported and I have tried all kinds of things, but the right one. It wont work.
Any clues ?
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by: samtran0331Posted on 2008-01-12 at 04:21:21ID: 20643535
since you know that a null datetime is going to return 01-01-1900, why not make your "if" statement based on that?
something along the lines of
if(e.Row.Cells[i].text=="0
or you could even use replace instead of the "if"...
e.Row.Cells[i].text.tostri