I am working on gina dll.In which i am using C++. in .net plateform.I am new in C++.net.I am facing a problem that i have a combobox & i want that when dialog box initialize and in combo box text automatically came from a text file whichi save into disk.If there is no any value in file then user enter value in combobox save in to text file.But in this case values save from combobox to file but not come from file to combo box please help me.

I don't know of an automatic way. At Form-load, you have to open the file, read stuff into memory, create objects, and place them into the combobox.