private void btnCleanAll_Click(object sender, EventArgs e)
{
if (
MessageBox.Show("确认要清空所有认识和不认识的单词所有记录？", "确认清空?", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning) ==
DialogResult.Yes)
{
if (
MessageBox.Show("确认要清空所有认识和不认识的单词所有记录？此操作不可逆，别后悔哦！", "再次确认清空?", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning) ==
DialogResult.Yes)
{
dbOperator.ClearUserVocabulary();
BindList();
MessageBox.Show("已清空，请点击设置词汇量进行重新设置");
}
}
}
