Bug 30325 - DataGridView crashes if a text cell is reentered
Summary: DataGridView crashes if a text cell is reentered
Status: NEW
Alias: None
Product: Class Libraries
Classification: Mono
Component: Windows.Forms ()
Version: 3.4.0
Hardware: PC Linux
: --- normal
Target Milestone: Community
Assignee: Bugzilla
Depends on:
Reported: 2015-05-21 17:56 UTC by Stephen McConnel
Modified: 2017-09-01 11:55 UTC (History)
1 user (show)

Is this bug a regression?: ---
Last known good build:

test program to demonstrate the bug (10.81 KB, application/zip)
2015-05-21 17:56 UTC, Stephen McConnel

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Description Stephen McConnel 2015-05-21 17:56:22 UTC
Created attachment 11292 [details]
test program to demonstrate the bug

With a simple DataGridView using default text cells, entering a cell a second time causes a crash due to using an object that has already been disposed.  This is due to DataGridViewTextBoxCell storing an internal private cell editor object that is disposed by DataGridView changing its EditingControlInternal.  The attached program illustrates the problem.  It runs fine on Windows using .Net, but crashes as described on Linux running Mono.
I have a simple fix for this that I will post as a pull request shortly.
Comment 1 Stephen McConnel 2015-05-21 18:52:04 UTC
See https://github.com/mono/mono/pull/1829 for my proposed fix.