TemplateNodeMarkerHasValue Field

An equals-sign ("=") marker prefix indicates that the marker should be substituted with "1" or "" (empty string) depending on whether or not the field's DisplayText has a non-null/non-blank value. This marker is appropriate for use in show-if and show-if-eval expressions such as data-showif="{{=desc_html}}" where the related content would be shown if, and only if, the desc_html field had some non-null/non-blank value. Similarly, a data-showif-eval="!'{{=desc_html}}'" can be used to show related content if, and only if, the desc_html IS null/blank. Note the use of ticks in the show-if-eval case since the negative case results in an empty string meaning that the expression will resolve to either '1' (when true), or '' (when false).

public const string HasValue = "="

Public Const HasValue As String = "="