//在asp.net裏頭做個登錄,用到ado.net方法和winform裏頭的一樣簡單
//拖三個控件,兩個TextBox一個button就行了,注意了初學者不要拖成html的控件
界面:
爲了養成習慣,我把連接字符串寫在了web.config文件裏頭了
代碼:
protected void Button1_Click(object sender, EventArgs e)
{
string id = TextBox1.Text.Trim();
string pwd = TextBox2.Text.Trim();
using (SqlConnection conn=new SqlConnection(connStr))
{
conn.Open();
using(SqlCommand cmd=conn.CreateCommand())
{
cmd.CommandText="select count(*) from login where id=@id and pwd=@pwd";
SqlParameter pm=new SqlParameter("@id",id);
SqlParameter pm2=new SqlParameter("@pwd",pwd);
cmd.Parameters.Add(pm);
cmd.Parameters.Add(pm2);
object obj=cmd.ExecuteScalar();
if (Convert.ToInt32(obj)>0)
{
Response.Write("<script>alert('登錄成功!')</script>");
}
else
{
Response.Write("<script>alert('登錄失敗!')</script>");
}
}
}
}