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<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:mshelp="http://msdn.microsoft.com/mshelp" xmlns:ddue="http://ddue.schemas.microsoft.com/authoring/2003/5" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:msxsl="urn:schemas-microsoft-com:xslt"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8" /><META NAME="save" CONTENT="history" /><title>Renumber Field</title><link rel="stylesheet" type="text/css" href="../styles/presentation.css" /><link rel="stylesheet" type="text/css" href="ms-help://Hx/HxRuntime/HxLink.css" /><script type="text/javascript" src="../scripts/EventUtilities.js"> </script><script type="text/javascript" src="../scripts/SplitScreen.js"> </script><script type="text/javascript" src="../scripts/Dropdown.js"> </script><script type="text/javascript" src="../scripts/script_manifold.js"> </script><script type="text/javascript" src="../scripts/script_feedBack.js"> </script><script type="text/javascript" src="../scripts/CheckboxMenu.js"> </script><script type="text/javascript" src="../scripts/CommonUtilities.js"> </script><meta name="container" content="BerkeleyDB" /><meta name="file" content="F_BerkeleyDB_SecondaryRecnoDatabaseConfig_Renumber" /><meta name="guid" content="F_BerkeleyDB_SecondaryRecnoDatabaseConfig_Renumber" /><xml><MSHelp:Attr Name="AssetID" Value="F:BerkeleyDB.SecondaryRecnoDatabaseConfig.Renumber" /><MSHelp:TOCTitle Title="Renumber Field" /><MSHelp:RLTitle Title="SecondaryRecnoDatabaseConfig.Renumber Field (BerkeleyDB)" /><MSHelp:Keyword Index="A" Term="F:BerkeleyDB.SecondaryRecnoDatabaseConfig.Renumber" /><MSHelp:Keyword Index="A" Term="frlrfBerkeleyDBSecondaryRecnoDatabaseConfigClassRenumberTopic" /><MSHelp:Keyword Index="K" Term="Renumber field" /><MSHelp:Keyword Index="K" Term="SecondaryRecnoDatabaseConfig.Renumber field" /><MSHelp:Keyword Index="F" Term="Renumber" /><MSHelp:Keyword Index="F" Term="SecondaryRecnoDatabaseConfig.Renumber" /><MSHelp:Keyword Index="F" Term="BerkeleyDB.SecondaryRecnoDatabaseConfig.Renumber" /><MSHelp:Attr Name="APIType" Value="Managed" /><MSHelp:Attr Name="APILocation" Value="libdb_dotnet53.dll" /><MSHelp:Attr Name="APIName" Value="BerkeleyDB.SecondaryRecnoDatabaseConfig.Renumber" /><MSHelp:Attr Name="DevLang" Value="CSharp" /><MSHelp:Attr Name="DevLang" Value="VB" /><MSHelp:Attr Name="DevLang" Value="C++" /><MSHelp:Attr Name="Locale" Value="en-us" /><MSHelp:Attr Name="TopicType" Value="kbSyntax" /><MSHelp:Attr Name="TopicType" Value="apiref" /><MSHelp:Attr Name="Abstract" Value="Cause the logical record numbers to be mutable, and change as records are added to and deleted from the database." /><MSHelp:Attr Name="AssemblyVersion" Value="5.3.28.0" /></xml></head><body><input type="hidden" id="userDataCache" class="userDataStyle" /><input type="hidden" id="hiddenScrollOffset" /><img id="collapseImage" style="display:none; 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Cause the logical record numbers to be mutable, and change as
records are added to and deleted from the database.
</div><p />
<b>Namespace:</b>
<a href="N_BerkeleyDB.htm">BerkeleyDB</a><br />
<b>Assembly:</b>
<span sdata="assembly">libdb_dotnet53</span> (in libdb_dotnet53.dll) Version: 5.3.28.0<h1 class="heading"><span onclick="ExpandCollapse(syntaxToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(syntaxToggle, event)" tabindex="0"><img id="syntaxToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Syntax</span></h1><div id="syntaxSection" class="section" name="collapseableSection" style=""><div id="syntaxCodeBlocks" class="code"><span codeLanguage="CSharp"><table><tr><th>C#</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span> <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">bool</a> <span class="identifier">Renumber</span></pre></td></tr></table></span><span codeLanguage="VisualBasicDeclaration"><table><tr><th>Visual Basic (Declaration)</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">Public</span> <span class="identifier">Renumber</span> <span class="keyword">As</span> <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">Boolean</a></pre></td></tr></table></span><span codeLanguage="ManagedCPlusPlus"><table><tr><th>Visual C++</th></tr><tr><td><pre xml:space="preserve"><span class="keyword">public</span>:
<a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">bool</a> <span class="identifier">Renumber</span></pre></td></tr></table></span></div></div><h1 class="heading"><span onclick="ExpandCollapse(remarksToggle)" style="cursor:default;" onkeypress="ExpandCollapse_CheckKey(remarksToggle, event)" tabindex="0"><img id="remarksToggle" class="toggle" name="toggleSwitch" src="../icons/collapse_all.gif" />Remarks</span></h1><div id="remarksSection" class="section" name="collapseableSection" style="">
<p>
For example, the deletion of record number 4 causes records numbered
5 and greater to be renumbered downward by one. If a cursor was
positioned to record number 4 before the deletion, it will refer to
the new record number 4, if any such record exists, after the
deletion. If a cursor was positioned after record number 4 before
the deletion, it will be shifted downward one logical record,
continuing to refer to the same record as it did before.
</p>
<p>
Using <a href="M_BerkeleyDB_Database_Put_2.htm">Put(MultipleKeyDatabaseEntry)</a> or <span class="nolink">Put(DatabaseEntry, DatabaseEntry, UInt32)</span> to
create new records will cause the creation of multiple records if
the record number is more than one greater than the largest record
currently in the database. For example, creating record 28, when
record 25 was previously the last record in the database, will
create records 26 and 27 as well as 28. Attempts to retrieve records
that were created in this manner will throw a
<a href="T_BerkeleyDB_KeyEmptyException.htm">KeyEmptyException</a>.
</p>
<p>
If a created record is not at the end of the database, all records
following the new record will be automatically renumbered upward by
one. For example, the creation of a new record numbered 8 causes
records numbered 8 and greater to be renumbered upward by one. If a
cursor was positioned to record number 8 or greater before the
insertion, it will be shifted upward one logical record, continuing
to refer to the same record as it did before.
</p>
<p>
For these reasons, concurrent access to a
<a href="T_BerkeleyDB_SecondaryRecnoDatabase.htm">SecondaryRecnoDatabase</a> with this setting specified may
be largely meaningless, although it is supported.
</p>
<p>
If the database already exists, this setting must be the same as the
existing database or an exception will be thrown.
</p>
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