Custom property type date with blank date

[Anonymous]

Hi all,

My company has a custom property named 'Released date, Type Date.

This date is still empty

I am working on a rule that adds all the custom properties required for the company title block.

This rule can be useful whenever you get a model from a supplier.

I can add a custom property date using the following code:

Dim oDoc As Document = ThisApplication.ActiveDocument
Dim customPropertySet As PropertySet = oDoc.PropertySets.Item("Inventor User Defined Properties")

Try
 iProperties.Value("Custom", "Released Date") = iProperties.Value("Custom", "Released Date")
Catch
 
 Dim DateValue As Date = Now 'System.DBNull.Value
 customPropSet.Add(DateValue, "Released Date") 
End Try

This code works but sets the released date to Now.

But the release date needs to remain blank when adding.

I tried to make the value Null but I get the error:

"Value of type 'System.DBNull' cannot be converted to 'Date'."

Is there a way to keep a custom property date blank?

Thx in advance,

Arnold

[xiaodong_liang · Accepted solution]

Hi,

please give it a try with

Imports System

Dim nullDate As Nullable 
iProperties.Value("Custom", "aaa") = nullDate

[Anonymous]

Works!

I had to add it accordingly (first create date, then make it nulldate):

Dim customPropertySet As PropertySet = oDoc.PropertySets.Item("Inventor User Defined Properties")

DimDateValueAsDate=Now
        customPropertySet.Add(DateValue, "Released Date")
    Dim nullDate As Nullable 
    iProperties.Value("Custom", "Released Date") = nullDate

Thanks!

[Anonymous]

Hi,

I would like to create an external rule, wich can be setted some parameter.

I have some problem with date variable.

I use the following code:

   Dim nullDate As Nullable

   iProperties.Value("Custom", "04. Szállítási határidő - T")=nullDate

After I run this rule the Type of properties stay Text and do not Date format. The Value of properties changes to blank.

I tried the following code:
   iProperties.Value("Custom", "04. Szállítási határidő - T")=CDate("nullDate")

This code can not work.

I attach a picture, where you can see what I want to get.