SPField.ReadOnlyField Property
Gets or sets a Boolean value that specifies whether values in the field can be modified.
Namespace: Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Syntax
'Declaration
<ClientCallableAttribute> _
Public Property ReadOnlyField As Boolean
Get
Set
'Usage
Dim instance As SPField
Dim value As Boolean
value = instance.ReadOnlyField
instance.ReadOnlyField = value
[ClientCallableAttribute]
public bool ReadOnlyField { get; set; }
Property Value
Type: System.Boolean
true to specify that the field cannot be modified; otherwise, false.
Examples
The following code example makes a field read-only in a specified list on a root Web site.
Using oSiteCollection As New SPSite("http://MyServer")
Using oWebsite As SPWeb = oSiteCollection.OpenWeb()
Dim oList As SPList = oWebsite.Lists("MyList")
Dim oItem As SPListItem = oList.Items(0)
oItem.Fields("MyField").ReadOnlyField = True
oItem.Fields("MyField").Update()
End Using
End Using
using (SPSite oSiteCollection = new SPSite("http://MyServer"))
{
using (SPWeb oWebsite = oSiteCollection.OpenWeb())
{
SPList oList = oWebsite.Lists["MyList"];
SPListItem oItem = oList.Items[0];
oItem.Fields["MyField"].ReadOnlyField = true;
oItem.Fields["MyField"].Update();
}
}
Note
Certain objects implement the IDisposable interface, and you must avoid retaining these objects in memory after they are no longer needed. For information about good coding practices, see Disposing Objects.