C # winform program how to use listBox to display online and offline users, please master

164976755 · Post time: 2020-2-11 11:00:01

shygza · Post time: 2020-4-7 13:15:01

When the user logs in, log the login information into the database, and then query the database records and fill it in the ListBox soon.

hundan3 · Post time: 2020-4-9 10:15:02

Make a collection, and put the information of the logged-in person into the collection as soon as you log in. When you exit, the information is removed. The ListBox cyclically displays each record in this collection.
Don't know if this idea agrees?

hundan3 · Post time: 2020-4-9 11:15:01

No need to involve the database. After all, it is just a display problem

sebadoh · Post time: 2020-4-12 11:30:01

One table stores users, one table stores online users, so it won't come out

songshib · Post time: 2020-5-19 10:00:02

songshib · Post time: 2020-5-19 10:15:01

It's not clear how you implement session management, all of the above can be achieved.

123ffff · Post time: 2020-5-23 23:30:01

I agree with the meaning of ls.

Someone goes online to listbox1.Items.Add ("New_User");

Offline
listbox1.Items.Remove ("User");
listbox2.Items.Add ("User");

targetking · Post time: 2020-5-25 14:15:01

lz means display in a listbox so the user's different status?

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