private void renwuTabChange(object sender, EventArgs e)
{
if (renwuTab.TabPages[renwuTab.SelectedIndex] == bugTab)
{
operate = SearchOperate.BUG;
searchBug(searchKeyword.Text);
checkboxOperate(bugCheckedState);
}
else
{
operate = SearchOperate.TASK;
searchTask(searchKeyword.Text);
checkboxOperate(taskCheckedState);
}
}