ADO OriginalValue and UnderlyingValue Properties

The OriginalValue property returns a variant that contains the field value as it existed right after the last Update or UpdateBatch method...


The OriginalValue property returns a variant that contains the field value as it existed right after the last Update or UpdateBatch method call.

The UnderlyingValue property returns a variant that contains the current value of a field. This value does not necessarily show changes made by other users and may not be the latest value.

Tip: Use the Resync property of the Recordset object to get the latest values for all of the Field objects in the Fields Collection.

Tip: These properties can be used together to prevent update conflicts.

Syntax

objField.OriginalValue
objField.UnderlyingValue

Example

<%
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 "customers", conn
set objfield=rs.fields("companyname")
'Some code..................
'Check for changes
rs.movefirst
while rs.eof=false
if objfield.OriginalValue<>objfield.UnderlyingValue
then
response.write("Data has changed!<br />")
response.write("Original value: ")
response.write(objfield.OriginalValue & "<br />")
response.write("Current value: ")
response.write(objfield.UnderlyingValue & "<br />")
end if
  rs.movenext
next
'More code...................
rs.Close
conn.close
%>

Name

ADO,131,ASP,3,C++,61,CORE JAVA,1,CSS,115,HTML,297,index,5,JAVASCRIPT,210,OS,47,PHP,65,SAD,53,SERVLETS,23,SOFTWARE ENGINEERING,245,SQL,71,TCP/IP,1,XHTML,9,XML,18,
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Best Online Tutorials | Source codes | Programming Languages: ADO OriginalValue and UnderlyingValue Properties
ADO OriginalValue and UnderlyingValue Properties
Best Online Tutorials | Source codes | Programming Languages
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