private void button2_Click(object sender, EventArgs e)
{
if (button2.Text == "加入单词本")
{
RecordService.AddCustomWord(MainWin.User, searchWord);
button2.Text = "移出单词本";
}
else
{
RecordService.RemoveCustomWord(MainWin.User, searchWord);
button2.Text = "加入单词本";
}
}