If you're looking for "in-place" editing of a ListView's contents (specifically the subitems of a ListView in details view mode), you'll need to implement this yourself, or use a third-party control.
By default, the best you can achieve with a "standard" ListView is to set it's LabelEdit property to true to allow the user to edit the text of the first column of the ListView (assuming you want to allow a free-format text edit).
Some examples (including full source-code) of customized ListView's that allow "in-place" editing of sub-items are:
http://www.csharphelp.com/archives2/archive341.html[
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and refer this Code project article your problem / doubt will be solved.
In-place editing of ListView subitems[
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Hope it Helps.