id

string, optional; Sets the unique identifier of the ReportViewer instance. If not specified, the id of the target HTML element will be used (if such is set). The id of the ReportViewer is used to identify the client session of the viewer when persistSession is enabled (true);

serviceUrl

string, required if reportServer not used ; Sets the address of the Report REST Service;

reportServer

JSON, required if serviceUrl not used ; Sets the configuration details for Telerik Report Server. Available properties:

• url (string, required) - the URL to the Telerik Report Server instance.

• username (string, optional) - a registered username in Report Server that will be used to get access to the reports. If omitted, the Report Server built-in Guest account will be used;

• password (string, optional) - the password for the provided username. Can be omitted only when connecting with the Guest account.

templateUrl

string, optional; Sets the address of the html page that contains the viewer templates; If omitted, the default template will be downloaded from the REST service.

reportSource

JSON, optional; Sets the report and initial report parameter values for the viewer to be displayed. Available properties:

• report - a string that represents a report on the server. On the server side this string will be converted to a ReportSource through an IReportResolver. That said this string may contain everything as far as the Telerik Reporting REST Services knows how to convert to a reports source that will be passed to the report engine for further processing. For example this may be an assembly qualified type name that can be converted to TypeReportSource, a path to a report definition file (.trdp/.trdx) as in the UriReportSource, or even a report id that a dedicated IReportSourceResolver will use to read the report definition stored in a database in xml format and converted to a XmlReportSource.

• parameters - a JSON object with properties name/value equal to the report parameters’ names and values used in the report definition;

scale

number, optional; Sets the scale factor for the report pages. The scale takes effect when scaleMode is set to “SPECIFIC”. Default value is 1.0 (100%);

scaleMode

string, optional; Sets how the report pages to be scaled. Available options are:

• “FIT_PAGE_WIDTH” - the pages are scaled proportional to fit the entire width in the viewer’s view port;

• “FIT_PAGE” - the pages are scaled proportional to fit the entire page in the view port;

• “SPECIFIC” - the pages are scaled with the scale value;

Default value is: “FIT_PAGE”.

viewMode

string, optional; Sets if the report is displayed in interactive mode or in print preview. The available values are:

• “INTERACTIVE” - enables drill-down interactivity, etc;

• “PRINT_PREVIEW” - the report is paged according to the page settings;

For more information please see Interactive vs. Print Layout. Default value is: 'Interactive'.

persistSession

boolean|optional. Sets whether the viewer’s client session to be persisted between the page’s refreshes(ex. postback). The session is stored in the browser’s sessionStorage and is available for the duration of the page session. A page session lasts for as long as the browser is open and survives over page reloads and restores. Opening a page in a new tab or window will cause a new session to be initiated.

The viewer’s state is persisted in the global sessionStorage object under a key defined by the viewer’s id. In order to enable the correct session to be loaded on the next page reload please use the same id as in the first load. This means that if you need to persist the client session between page reloads you should set the viewer’s id (or the id of the target element) to a constant value that should not be changed dynamically during the page lifecycle.

Default Value is: false;

parameterEditors

array, optional; Allows user to defined custom editors for the report parameters.

authenticationToken

string, optional; If provided, a Bearer token will be set in the Authorization header for every request to the REST service.

printMode

string, optional. Specifies how the viewer should print reports. The available values are:

• “AUTO_SELECT” - specifies that the viewer should automatically decide which option for printing to use depending on browser's version and whether the PDF plug-in is available or not. This is the default value;

• “FORCE_PDF_FILE” - specifies that the document for printing will be downloaded as a file (in PDF format with a special 'print' script enabled);

• “FORCE_PDF_PLUGIN” - specifies that the viewer should always use the PDF plug-in;

selector

string, optional. A selector used in conjunction with the data- attributes. Whenever a command is attached to an element outside of the report viewer via the data-attributes this selector must be provided.

disabledButtonClass

string, optional. A class used in conjunction with the data- attributes. Whenever a command is in the disabled state this class will be added to the respective button.

checkedButtonClass

string, optional. A class used in conjunction with the data- attributes. Whenever a command is in the checked state this class will be added to the respective button.

enableAccessibility

boolean, optional. Determines whether the viewer should provide support for accessibility features. You can find more detailed information here.

Default value: false;

searchMetadataOnDemand

boolean, optional. Determines whether the search metadata will be delivered on demand (true) or by default (false).

Default value: false;