How to stop Enter key from deleting ComboBox.Text (with AutoComplete)?

Question

SOLVED: The issue was DropDownStyle.Simple

Every time I press Enter when typing into folderComboBox it deletes the Text.

It turns out that the problem doesn't occur in a fresh project. It only deletes the text when I use auto completion.

ComboBox folderComboBox = new ComboBox();

void folderComboBox_KeyUp(object sender, KeyEventArgs e)
{

    if (e.KeyCode == Keys.Enter)
    {
        e.SuppressKeyPress = true;
        e.Handled = true;
    }
}

• I do not have a Form.AcceptButton (mentioned as an issue in another post).

Similar Posts:

1. Autocomplete on Combobox onkeypress event eats up the Enter key
2. How do I capture the enter key in a windows forms combobox

Answer 1

Solution:

comboBox.DropDownStyle = DropDownStyle.DropDown; //DEFAULT

Issues:

comboBox.DropDownStyle = DropDownStyle.Simple; //MAIN CAUSE OF ISSUE
comboBox.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
comboBox.AutoCompleteSource = AutoCompleteSource.FileSystemDirectories;