try
{
string NameStr=this.txtName.Text;
string AgeStr =this.txtAge.Text;
SqlConnection conn = new SqlConnection("Data Source=hetao;Initial Catalog=TestDB;Integrated Security=True");
conn.Open();
SqlCommand cmd=new SqlCommand("select count(*) as flag from T_UserName where name="+"'"+NameStr+"'"+"and age ="+"'"+ AgeStr+"'",conn);
cmd.ExecuteNonQuery();
int flag=Convert.ToInt32(cmd.ExecuteScalar().ToString());
if(flag>0)
{
frmMain fm = new frmMain();
fm.Show();
this.Hide();
}
else
{
this.labelX3.Enabled=true;
this.labelX3.Text="出错";
this.labelX3.Visible=true;
}
}
catch
{
MessageBox.Show("用户名和密码错误");
}