TaxonomyWebTaggingControl class
Represents a generic Web control for picking managed metadata terms.
Inheritance hierarchy
System.Object
System.Web.UI.Control
System.Web.UI.WebControls.WebControl
Microsoft.SharePoint.Taxonomy.TaxonomyWebTaggingControl
Namespace: Microsoft.SharePoint.Taxonomy
Assembly: Microsoft.SharePoint.Taxonomy (in Microsoft.SharePoint.Taxonomy.dll)
Syntax
'Declaration
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel := True)> _
<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel := True)> _
Public NotInheritable Class TaxonomyWebTaggingControl _
Inherits WebControl
'Usage
Dim instance As TaxonomyWebTaggingControl
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
public sealed class TaxonomyWebTaggingControl : WebControl
Remarks
A TaxonomyWebTaggingControl object is a Web control that can be added to a page so that a user can pick one or more taxonomy Term object from a specific TermSet object or from an entire TermStore object.
This control ensures that all terms are valid, and if they are not, it requires validation from the user when it finds an invalid term. If the TermStore or TermSet connection cannot be established, the TaxonomyWebTaggingControl will be disabled.
Examples
using System;
using System.IO;
using System.Globalization;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Taxonomy;
namespace Microsoft.SDK.SharePointServer.Samples
{
public class TestTaxonomyWebTaggingControl : System.Web.UI.Page
{
// In order to place the TaxonomyWebTaggingControl on an aspx page use the following declaration:
// <Taxonomy:TaxonomyWebTaggingControl id="myTaxonomyControl" runat="server" />
protected TaxonomyWebTaggingControl myTaxonomyControl;
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if (IsPostBack)
{
// since this is a PostBack we want to validate
string errorMessage = string.Empty;
if (myTaxonomyControl.Validate(out errorMessage))
{
string value = myTaxonomyControl.Text;
// now do what you want with the value returned from the control.
}
else
{
// The data was not valid so you need to inform the user
throw new Exception("The data entered was not valid");
}
}
else
{
TaxonomySession taxonomySession = new TaxonomySession(SPContext.Current.Site);
// This code assumes you have a term store and term set set up already (we are just taking the first one
myTaxonomyControl.SSPList = taxonomySession.TermStores[0].Id.ToString();
myTaxonomyControl.TermSetList = taxonomySession.TermStores[0].Groups[0].TermSets[0].Id.ToString();
myTaxonomyControl.GroupId = taxonomySession.TermStores[0].Groups[0].Id;
// This controls whether you can add new terms to the term set
myTaxonomyControl.AllowFillIn = false;
// This controls whether we use an anchor term or not (by setting it to Empty we are explicitly choosing
// not to)
myTaxonomyControl.AnchorId = Guid.Empty;
// Since we are bound to a specific term set and not spanning term sets the following property really does nothing
myTaxonomyControl.ExcludeKeyword = false;
// This controls whether unresolved terms will just be added to the termset or not
myTaxonomyControl.IsAddTerms = false;
// This setting allows you to browse the term set
myTaxonomyControl.IsDisplayPickerButton = true;
// This setting enables/disables validation highlighting
myTaxonomyControl.IsIgnoreFormatting = false;
myTaxonomyControl.IsIncludeDeprecated = false;
myTaxonomyControl.IsIncludeUnavailable = false;
// This setting modifies what is stored/returned from the control, if you want the GUIDS of parent terms
// then set this to true
myTaxonomyControl.IsIncludePathData = false;
// This setting will include term set name resolution as well if set
myTaxonomyControl.IsIncludeTermSetName = false;
// This allows or disallows multiple values to be selected
myTaxonomyControl.IsMulti = false;
// We are searching on a specific termset so set these to false
myTaxonomyControl.IsSpanTermSets = false;
myTaxonomyControl.IsSpanTermStores = false;
myTaxonomyControl.IsUseCommaAsDelimiter = false;
// This is the LCID of the language to resolve terms against
myTaxonomyControl.Language = taxonomySession.TermStores[0].DefaultLanguage;
// This has a default value, however, if you want to customize what web service it uses you can
// change the URL.
myTaxonomyControl.WebServiceUrl = new Uri(SPContext.Current.Web.Url + "/_vti_bin/TaxonomyInternalService.json");
myTaxonomyControl.SetCannotBeBlankErrorMessage("This control should not be blank");
// If you want to modify the width/height of the control you will need to use the WidthCss/HeightCss
// properties and set them to a css class that defines the width/height properties. The code would
// be:
// myTaxonomyControl.WidthCss = "my-css-class";
// myTaxonomyControl.HeightCss = "my-css-class";
}
}
}
}
Thread safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.