CODEWITHSUNDEEP
vb.net
Soroush Trb
Soroush Trb

Reputation: 15

unhandled exception when add control runtime

i try add Textbox in panel at runtime but i get error:

An unhandled exception of type 'System.NullReferenceException' occurred in Judge.exe
Additional information: Object reference not set to an instance of an object.

and my code is:

Dim nl As New TextBox
AddHandler nl.LostFocus, AddressOf lost_focus
nl.Focus()
Panel1.Container.Add(nl)

and i use sub to add it and i call it from other form and its UserControl.

thanks.

Upvotes: 0

Views: 88

Answers (1)

KekuSemau
KekuSemau

Reputation: 6856

Panel1.Container is probably wrong. Try Panel1.Controls.Add(nl).

Upvotes: 2

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