retriving datagridview record into textbox

Question

Sir, i am making one C# application in which i used 1 datagridview when i search any record in datagridview using search button. result is fillter and showing in datagridview. but " how to retrive this datagridview record in textbox for edit purpose  and after edit it save in database ". i am tired to write code for this. but it not works properly.