primitive.Textures.GetFace Refresh

[dev-serena]

Hello,
I don't know how to explain my question then i will put an exemple:
For a slot machine or light traffic in 3D view with viewer or radegast 3D view when texture coordinate change i can see instantaneous.
with consolae with testclient modified it work .
But in winform or wpf when i try

` public string GetCoord()
{
guuid = ConfigurationManager.AppSettings["uuid"];
Predicate<OpenMetaverse.Primitive> match = null;
UUID primID;
if (UUID.TryParse(guuid, out primID))
{
if (match == null)
{
match = prim => prim.ID == primID;
}

            OpenMetaverse.Primitive primitive = Client.Network.CurrentSim.ObjectsPrimitives.Find(match);
            if (primitive != null)
            {
                return getvaluespace("U" + Convert.ToString(primitive.Textures.GetFace(1).OffsetU.ToString("0.00")) + "V" + Convert.ToString(primitive.Textures.GetFace(1).OffsetV.ToString("0.00")));
            }
            else
            {
                return "";
            }



        }
        else
        {
            return "";
        }

    }

private void button1_Click(object sender, EventArgs e)
{
UUID fromAgentID;
string guuidround = "3a79a318-1ae9-fa8e-8bcf-5ae72f5d6660";

        UUID target;
        if (UUID.TryParse(guuidround, out target))
        {
            Primitive targetPrim = Client.Network.CurrentSim.ObjectsPrimitives.Find(
                prim => prim.ID == target
            );

            if (targetPrim != null)
            {
               textBox5.Text = getvaluespace("U" + Convert.ToString(targetPrim.Textures.GetFace(1).OffsetU.ToString("0.00")) + "V" + Convert.ToString(targetPrim.Textures.GetFace(1).OffsetV.ToString("0.00")));
                
            }
        }
    }`

It work good for first try but after i need to wait some second before received the good result.
Is there something to do for refresh fast?
Best Regards