Link and Param XML elements reference

项目
04/05/2017

Azure DevOps Server 2022 - Azure DevOps Server 2019 | TFS 2018 - TFS 2013

You can add a hyperlink to a field or a standalone label on a work item form by using the Link element. You use the Link element in the following instances to:

Add a hyperlink to a field label
Add a hyperlink to a standalone label or portions of informational text
Specify the URL for content to be displayed within a work item form

To add elements to a form, you modify the definition for a work item type. See Modify or add a custom work item type.

The Link element is either a child element of the Control element, or a child element of the WebpageControlTarget or WebpageControlOptions elements. For more information about these elements, see Control and WebpageControlOptions.

Syntax

<Link URLRoot="URLRoot" URLPath ="URLPathWithParameters">  
      <Param Index="IndexValue " Value="ParamValue " Type ="Original | Current"/>  
</Link>

Attributes and elements

The following sections describe attributes, child elements, and parent elements.

Child elements and attributes

Element	Attribute	Description
`Link`		Optional `Control` element when `type="FieldControl"`. Optional `LabelText` element. Optional `Text` element. Optional `WebpageControlOptions` element. Container element for defining a hyperlink or URL.
	`UrlRoot`	Required `Link` attribute. Specifies the protocol and the server name of the URL to which the label links. Supported protocols are HTTP, HTTPS and MAILTO. You can either hardcode the specified server name , or you can use one of the following macros and optionally append additional address information to a macro: Note: Each macro links to the URL that is defined and enabled for the project of the work item form for which the `Link` element is defined. If any of the resources are not provisioned or enabled for the project, a "page not found" error will appear. - `@PortalPage`: The URL of the SharePoint site for the current project (for example, http://serverName/sites/collectionName/TeamProjectName). - `@ProcessGuidance`: The URL of the SharePoint site for the process guidance for a project. - `@ReportManagerUrl`: The URL of the server that hosts Report Manager for the current project. This provides a link to the folder view for the reports (for example, `http://serverName/Reports/Pages/Folder.aspx?ItemPath=/collectionName/teamProjectName`). - `@ReportServiceSiteUrl`: The URL of the server that hosts SQL Server Reporting Services for the current project plus the base path for the project (for example, http://serverName/Reports/Pages/reportservice.asmx?ItemPath=/collectionName/teamProjectName). To determine the hardcoded value for the first two macros, you can open the project portal settings for a project. For more information, see Configure or redirect process guidance.
	`UrlPath`	Optional `Link` attribute. Specifies a URL path for the hyperlink. You use this attribute to specify variable parameters that are determined at run time.
`Param`		Optional `Link` element. Required when `UrlPath` is specified. Specifies a value to be used to determine the URL of the hyperlink when `UrlPath` is specified.
	`Index`	Required `Param` attribute. Specifies the index of the parameter where the value must be formatted into the URL string. It is not required to order the Index values sequentially; however, they must match the number of the index in the `URLPath` string. The first index number should be 0.
	`Value`	Required `Param` attribute. Specifies the number associated with the value for a URL path for the hyperlink. Specifies a value that must be formatted into the `URLPath` string. Values must be valid reference names of fields used in the work item type definition. The `@Me` variable is supported. It is replaced with the name of the current team member that is viewing the work item form. Value entries are not case sensitive
	`Type`	Optional `Param` attribute. Specifies that the original value of the field must be used for the parameter. Valid values are as follows: - `Original`: Specifies to use the original parameter value to determine the URL path. - `Current`: Specifies to use the current parameter value to determine the URL path. If this attribute is not specified, the current value of the field is used as a parameter

Parent elements

Element	Description
Control	Required. Defines a field, text, hyperlink, or other control element to appear on the work item form.
LabelText	Optional `Control` element. Container element for a label to appear on the work item form.
Text	Optional `LabelText` element. Container element for the information or label to appear on the work item form.
WebpageControlOptions	Optional `Control` element. Container element that specifies the options for the Web page control. For more information, see Provide help text, hyperlinks, or web content on a work item form.

Remarks

The default behavior of the Link element is to open the hyperlink in the work item form or Web page. If the hyperlink is authored to open in a new window (target="_blank"), then an external browser is opened.

You can combine plain and hyperlinked text by adding multiple Text elements in a LabelText element.

The LabelText element is only recognized by clients that are running the latest version of Team Explorer. Therefore, you must specify the Label attribute in a Control element when you specify a child Link element. For clients that are running the latest version of Team Explorer, the text provided by the a LabelText element appears in the work item form. For clients that are running previous versions of Team Explorer, the text specified by the Control element Label attribute appears in the work item form.

Important

You can insert a Link element within Layout section (old web form) or the WebLayout section (new web form), except not within the SystemControls section. The SystemControls section renders the form header and is restricted to specific rules as described in WebLayout and Control elements.

Example: Specify a hyperlink with parameters

The following example shows how you can define a hyperlink, such as http://ServerName/sites/CollectionName/ProjectName/render.aspx?wit=bug&topic=Iteration that links to the process guidance for the Iteration topic.

The name of the project is derived from the value assigned to the System.Project field.

<Link UrlRoot="http://serverName" UrlPath="sites/{0}/render.aspx?wit=bug&amp;topic=Iteration">
   <Param Index="0" Value="System.Project" />
</Link>

Example: Add a hyperlink to a standalone label

The following example shows how you can assign a hyperlink to the text "work item guidance" on a work item form.

<Control type="LabelControl">
   <LabelText> 
      <Text>
         <Link UrlRoot="http://www.msn.com" />
      work item guidance
      </Text>
   </LabelText> 
</Control>

Example: Add a hyperlink to a field

The following example shows how you can add a hyperlink to the label for a field on a work item form.

<Control Type="FieldControl" FieldName="Microsoft.VSTS.CMMI.UserAcceptanceTest" LabelPosition="Left" Label="This text comes from the Label attribute:">
   <LabelText>
      <Text>
         <Link UrlRoot="http://www.live.com/" />
         This text comes from the inner Label Text
      </Text>
   </LabelText>
</Control>