In order to have dynamic titles, tooltips, and labels in Power BI that update appropriately with the slicer selection, it is very important to write the DAX expressions according to the structure and cleanly arrange the visuals. The following are some of the effective tips:
Make Measures for Dynamic Titles: To begin with, create the necessary DAX measure for every dynamic title, label, or tooltip. One can use a function like SELECTEDVALUE to get the value of the current slicer or CONCATENATE for multiple values. Consider:
TitleMeasure = "Sales Data for " & SELECTEDVALUE('DateTable'[Year], "All Years")
This would entail seeking the appropriate titles every time the user changes the slicer, enhancing users' comprehension of the report.
Account for Multiple Selections and Blanks: In case there is a possibility of users leaving some slicers blank and others making several selections, those situations must be dealt with in your DAX codes to avoid having cut-off titles or errors. IF and ISBLANK functions could come in handy in creating a show cover index for deselected and when more than one slicer value is selected, like "All Selections" or "Multiple Selections."
Link Measure to Visuals: Last but not least, incorporate the DAX measure in the title or tooltip box by pressing "fx" (conditional formatting) in the Title or Tooltip configuration of the visuals. Tick the appropriate measure on the drop-down, ensuring that the dynamic text is in the visual and not outside it. This technique allows titles and tooltips to change immediately when the slicer changes, enhancing the users' interaction with the system.
