Texboxbased filter checkboxlist and retain the value

Question

Hi Experts,

I have developing a windows application with CheckedListBox and Textbox.
Checkboxlist contains 100 values.
Textbox- filter the Checkboxlist value based on the textbox text

Also I can retain the checked values from full list and filtered list

Attached sourced code for quick reference

How Can i do this?
please help me out on this.


Thanks,
Murugavel S