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ADO Attributes Property

Complete Property Object Reference

The Attributes property sets or returns a long value that indicates one or more characteristics of an object.

Note: When setting multiple attributes, it is possible to sum the values.

Object	Description of the Attributes Property
Connection	The Attributes property has read/write permissions on a Connection object. Its value can be the sum of one or more XactAttributeEnum values. Default value is 0
Parameter	The Attributes property has read/write permissions on a Parameter object. Its value can be the sum of one or more ParameterAttributesEnum values. Default value is adParamSigned
Field	The Attributes property has read/write permissions when used to create a Recordset, but it has read-only permissions when you open an existing Recordset. Its value can be the sum of one or more FieldAttributeEnum values
Property	The Attributes property is read-only for a Property object. Its value can be the sum of one or more PropertyAttributesEnum values

Syntax

object.Attributes

Example - For a Connection object:

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

response.write(conn.Attributes)

conn.close
%>

Example - For a Field object:

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

set rs = Server.CreateObject("ADODB.Recordset")
rs.open "Select * from orders", conn

set f=Server.CreateObject("ADODB.Field")

'Display the field attributes of the Orders Table
for each f in rs.Fields
 response.write("Attr:" & f.Attributes & " ")
 response.write("Name:" & f.Name & " ")
 response.write("Value:" & f.Value & " ")
Next

rs.Close
conn.close
set rs=nothing
set conn=nothing
%>

Example - For a Property object:

<%
set conn=Server.CreateObject("ADODB.Connection")
conn.Provider="Microsoft.Jet.OLEDB.4.0"
conn.Open "c:/webdata/northwind.mdb"

set rs = Server.CreateObject("ADODB.Recordset")
rs.open "Select * from orders", conn

set prop=Server.CreateObject("ADODB.Property")

'Display the property attributes of the Orders Table
for each prop in rs.Properties
 response.write("Attr:" & prop.Attributes & " ")
 response.write("Name:" & prop.Name & " ")
 response.write("Value:" & prop.Value & " ")
next

rs.close
conn.close
set rs=nothing
set conn=nothing
%>

FieldAttributeEnum Values

Constant	Value	Description
adFldCacheDeferred	0x1000	Provider caches the field values and reads from the cache.
adFldFixed	0x10	Field contains fixed-length data.
adFldIsChapter	0x2000	Field contains a chapter value that specifies a child recordset.
adFldIsCollection	0x40000	The field specifies that the resource represented by the record is a collection of resources
adFldIsDefaultStream	0x20000	Field contains the default stream for the resource represented by the record.
adFldIsNullable	0x20	Field accepts null values.
adFldIsRowURL	0x10000	Field contains the URL that names the resource from the data store represented by the record.
adFldLong	0x80	Field is a long binary field.
adFldMayBeNull	0x40	You can read null values from the field.
adFldMayDefer	0x2	Field values are not retrieved from the data source with the whole record, but only when you explicitly access them.
adFldNegativeScale	0x4000	Field represents a numeric value from a column that supports negative scale values.
adFldRowID	0x100	Field contains a persistent row identifier that cannot be written to and has no meaningful value except to identify the row (such as a unique id)
adFldRowVersion	0x200	Field contains some kind of time/date stamp used to track updates.
adFldUnknownUpdatable	0x8	The provider cannot determine if you can write to the field.
adFldUnspecified	-1 0xFFFFFFFF	Provider does not specify the field attributes.
adFldUpdatable	0x4	You can write to the field.

PropertyAttributesEnum Values

Constant	Value	Description
adPropNotSupported	0	The property is not supported by the provider.
adPropRequired	1	The user must specify a value for this property before the data source is initialized.
adPropOptional	2	The user does not need to specify a value for this property before the data source is initialized.
adPropRead	512	The user can read the property.
adPropWrite	1024	The user can set the property.