Update password Not working

Question

cn.Open();

cmd.Connection = cn;

cmd.CommandText = "Select * From LoginUser Where User_Id= '" + TB_User.Text + "'  And Pass_W='" + TB_Pass.Text + "'";

SqlDataReader dr = default(SqlDataReader);

dr = cmd.ExecuteReader();

if (dr.HasRows) {

dr.Read();

if ((dr.Item("User_Id").ToString == TB_User.Text) & (dr.Item("Pass_W").ToString == TB_Pass.Text)) {

dr.Close();

if (TB_New_P.Text == TB_Con_P.Text) {

cmd.CommandText = "Update LoginUser Set Pass_W='" + TB_New_P.Text + "' Where User_Id='" + TB_User.Text + "'";

cmd.ExecuteNonQuery();

Interaction.MsgBox("Password Update Sucess");

} else {

Interaction.MsgBox("Password Didnot match");

}

}

}

In VB we have dr.item stuff...so therein its woking fine...

but not in C#

Plz help