ListViewUpdateEventArgs::Keys Property
Gets a dictionary of field name/value pairs that represent the key or keys of the item to update.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
Property Value
Type: System.Collections.Specialized::IOrderedDictionaryThe field name/value pairs that represent the key or keys of the item to update.
When the DataKeyNames property of a ListView control is set, use the Keys property (dictionary) to access the value of the primary key in the item to update.
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To access the values of the non-key fields, use the NewValues or OldValues properties. The NewValues property contains the updated values, and the OldValues property contains the original values. |
The Keys dictionary is automatically populated with the name/value pairs of the field or fields specified in the DataKeyNames property. If multiple fields form the primary key, a separate entry is added to the Keys dictionary for every key field.
To determine the name of a key field, use the DictionaryEntry::Key property of a DictionaryEntry object that is contained in the Keys dictionary. To determine the value of a key field, use the DictionaryEntry::Value property.
The following example shows how to use the Keys property to access the value of the key field for the record being updated.
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This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview. |
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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