Hi , 
     Bubble and donut charts are  not supporting, While binding with string value in x-axis , it shows error . please tell me the solution to bind the  string value to the  x-axis with the radhtmlchart .

thanks .

Hello Bala,

Bubble charts have a numerical x-axis, so you cannot bind a list of strings to it: http://demos.telerik.com/aspnet-ajax/htmlchart/examples/charttypes/bubblechart/defaultcs.aspx.
Donut charts are akin to pie charts and do not have axes at all: http://demos.telerik.com/aspnet-ajax/htmlchart/examples/charttypes/donutchart/defaultcs.aspx.

You can set custom strings to be shown as categories for line, area and column charts. This is explained here: http://demos.telerik.com/aspnet-ajax/htmlchart/examples/functionality/mixedchartseries/defaultcs.aspx.


Regards,
Marin Bratanov
Telerik