How do I change the password ASP.NET

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ASP.NET

Hello and thank you for help. I have a quick problem. I want to change the password, verify if the actual password is ok, then change it but my if else is just execute my else branch and show that the password is wrong. Where is the problem in my code? Thank you!

What I have tried:

protected void MetodaSchimbaParola(object sender, EventArgs e)
{
if (txtParola.Text == Request.Cookies["Login"]["parola"].ToString())
{
con.Open();
SqlCommand cmd = new SqlCommand("UPDATE inregistrare_user SET parola=@PA where userID=@UD", con);

cmd.Parameters.AddWithValue("@PA", txtParolaNoua1.Text);
cmd.Parameters.AddWithValue("@UD", Request.Cookies["Login"]["userID"].ToString());
cmd.ExecuteNonQuery();
con.Close();
Informare.Text = "PASSWORD CHANGED";
}
else
{
Informare.Text = "WRONG ACTUAL PASSWORD";
}