How to apply autocomplete to the dropdown list in excel using c#?

I have a list with name mydropdown which has around 150 values,so i it annoying for user to drag the list and select the item.I searched for autocomplete list f开发者_如何转开发or excel and find that combobox can be used but all the processing is done using macro and i cant use macro in my project,i m using c# vsto so is there way to handel combobox using c# or is there a workaround?

thanks in advance....

The combo box from the Control Toolbox toolbar has this feature. Set its MatchEntry property to 0 - fmMatchEntryFirstLetter or 1 - fmMatchEntryComplete (the default value).