内容发布更新时间 : 2025/6/14 12:50:35星期一 下面是文章的全部内容请认真阅读。
MessageBox.Show(\对不起，此用户已经存在！\ return; } }
private void btnOk_Click(object sender, EventArgs e) {
//判断用户名是否已经存在
bool flag = dataOperate.seleSQL(sql); if (flag) {
MessageBox.Show(\对不起，此用户已经存在！\ return; }
//如果前两次都没有错误，就将新用户信息写入数据库 switch (cbShenFen.SelectedIndex) {
case 0: sql = \txtNum.Text + \+ txtUserName.Text + \+ txtQuestion.Text + \+ txtAnswer.Text + \
case 1: sql = \into T_Teacher_user values('\+ txtNum.Text + \+ txtUserName.Text + \+ txtQuestion.Text + \+ txtAnswer.Text + \
case 2: sql = \into T_Student_user values('\+ txtNum.Text + \+ txtUserName.Text + \+ txtQuestion.Text + \+ txtAnswer.Text + \
}
flag = dataOperate.execSQL(sql); if (flag) {
MessageBox.Show(\注册/添加用户成功！\ if (cbShenFen.SelectedIndex==2) {
InsertInfo II = new InsertInfo(); II.Show(); }
this.Close(); }
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else {
MessageBox.Show(\注册/添加用户失败！\ } }
private void btnReset_Click(object sender, EventArgs e) {
txtNum.Text = \ txtNum.Focus();
txtUserName.Text = \ txtQuestion.Text = \ txtAnswer.Text = \ }
private void AddUser_Load(object sender, EventA