private void btnLogin_Click(object sender, EventArgs e)
{
//非空验证
if (txtUserName.Text == "")
{
HintMessageBox.Warning_hint("请输入账户姓名!!");
return;
}
else if (txtPwd.Text == "")
{
HintMessageBox.Warning_hint("请输入账户密码!!");
return;
}
//sql语句
string sql = string.Format("select COUNT(*) from admin_info where admin_name = '{0}' and admin_pwd = '{1}'", txtUserName.Text.Trim(), txtPwd.Text.Trim());
if (db.ExecuteScalar(sql) == null)
{
return;
}
if ((int)db.ExecuteScalar(sql) > 0)
{
HintMessageBox.Information_hint("登录成功!!");
FrmAdmin admin = new FrmAdmin();
admin.Show(); //显示后台管理主窗体
this.Hide(); //隐藏登录窗体
}
else
{
HintMessageBox.Information_hint("用户名或密码错误！！");
}
}
//登录
private void btnLogin_Click(object sender, EventArgs e)
{
if (ValidateInput())
{
string message = "";
//调用方法，判断用户是否存在
bool userExist = ValidateUser(this.txtUserName.Text.Trim(), this.txtPwd.Text.Trim(), ref message);
if (userExist)
{
FrmAdmin adminForm = new FrmAdmin();
adminForm.Show();
this.Hide();
}
else
{
MessageBox.Show(message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}