Google Chart Tooltip Not Working

Question

I am currently working on Google Chart using ASP.NET and connecting it to the database (SQL Server). But I have a problem when trying to customize the tool tip.

Here

Answer 1

Adding to note.

note 5:

You can only modify tooltip if you use google.visualization like so:

new google.visualization.LineChart(divChart).draw(dataTable,options);

Not google.charts:

new google.charts.Line(divChart).draw(dataTable,options);

But, make sure to include theme: 'material' in the options of google.visualization to modernize the theme.