How to assign null to Datetime property in c# , In Database the is DateTime column is having NULL value
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The Date variable type cannot be null. It must have a value.
Most people use Date.MinValue (or Date.MaxValue) to represent a null date in
their code.
Example:
Dim MyDate as Date = Date.MinValue
As for inserting it in the database, the other guys already specified that
DBNull.Value is what you'll want to use.
The better news is that in .NET 2.0 all variable types will be nullable.
Here's more info:
http://www.panopticoncentr
In that case you are assigning a DBNull-value, which is not the same as a Null-value
Difference between NULL and DBNull
http://bhaidar.net/cs/arch
In database applications, a null object is a valid value for a field. This class differentiates between a null value (a null object) and an uninitialized value (the DBNull.Value instance). For example, a table can have records with uninitialized fields. By default, these uninitialized fields have the DBNull value.
Business Accounts
Answer for Membership
by: DhaestPosted on 2008-12-15 at 03:20:08ID: 23172372
MSDN:
"Unlike reference types, it is not possible for a value type to contain the null value."
DateTime is a value type.
Since DateTime is a Value Type (not a Reference Type), so you can't assign
null or Nothing to it. If you want to do something simelar, you could use
the MinValue property:
if(myDate == DateTime.MinValue)
{
//myDate is empty
}
Or you can use the Nullable Types library:
http://nullabletypes.sourc