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fix issues#12941 Combox autocomplete list weird selection behaviour #12999

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fix issues#12941 Combox autocomplete list weird selection behaviour #12999

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1e6a277
fix issues#12941 Combox autocomplete list weird selection behaviour
Epica3055 Feb 21, 2025
6752039
fix comment
Epica3055 Feb 21, 2025
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10 changes: 10 additions & 0 deletions src/System.Windows.Forms/src/System/Windows/Forms/Controls/ComboBox/ComboBox.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -2435,6 +2435,16 @@ protected virtual void OnDropDown(EventArgs e)
[EditorBrowsable(EditorBrowsableState.Advanced)]
protected override void OnKeyDown(KeyEventArgs e)
{
// for fix https://github.com/dotnet/winforms/issues/12941
char input = (char)e.KeyValue;
if ((AutoCompleteMode == AutoCompleteMode.Suggest || AutoCompleteMode == AutoCompleteMode.SuggestAppend) &&
!char.IsControl(input))
{
DroppedDown = false;
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@Tanya-Solyanik Tanya-Solyanik Feb 21, 2025 •
edited by merriemcgaw
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This change in behavior might not work for some users. For example, if the autocomplete list is not displayed because what the user types is not in the drop-down list, we shouldn't close the drop down. I would rather not fix it.

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I'm going to have to agree here. I don't like that change in behavior.

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@Epica3055 Epica3055 Feb 24, 2025 •
edited
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ok I will close this PR, maybe someday I will pick it up 🤣

}

// End fix

// Do Return/ESC handling
if (SystemAutoCompleteEnabled)
{
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