private void btOk_Click(object sender, EventArgs e)
{
string findSql = "select * from DT_career where classnum ='" + tBcnu.Text + "'";
string insertSql = "insert into DT_career" + "(classnum,classname)" + "values('" + tBcnu.Text + "','" + tbCna.Text + "')";
SqlHelp sqlHelper = new TryDBMS.SqlHelp();
int count1 = sqlHelper.SqlServerRecordCount(findSql);
if (count1 > 0)
{
wrong1();
}
int count2 = sqlHelper.ExecuteNonQueryCount(insertSql);
if (count2 > 0)
{
right();
}
Hide();
}