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SPField.DefaultValue Property

SharePoint 2010

Gets or sets the default value for a field.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
C#
VB
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[ClientCallableAttribute]
public virtual string DefaultValue { get; set; }

Property Value

Type: System.String
A string that contains the default value.
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SPFieldLookup Datasheet View Bug

There are some compatibility issues when editing Lookup Columns in Datasheet view after setting the DefaultValue property.

See this article for details and a workaround: http://rrfreeman.blogspot.com/2012/03/sharepoint-lookup-column-defaultvalue.html

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Set Default Value

To add a default value of today's date you need to assign "[today]" to this property. Yip. the string "[today"]. In other cases you need to convert a DateTime to string like so:

DateTime defaultValue = DateTime.Today.ToString("u");

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Default Value
To add a default value of today's date you need to assign "[today]" to this property. Yip. the string "[today"]. In other cases you need to convert a DateTime to string like so:

DateTime defaultValue = DateTime.Today.ToString("u");

History