TextChanged Event on Click of Other Event

Thanks Sam,
 
    Here is Code:
   
    protected void txtName_TextChanged(object sender, EventArgs e)
    {     

        if ISExist(txtName.Text.Trim()))
        {
            lblErrMessage.Text = "Name Already Exist";
           
        }
        else
        {
            lblErrMessage.Text = string.Empty;
        }
       
    }

   protected void IbtnReset_Click(object sender, ImageClickEventArgs e)
    {
        ClearFields(); // Function which clear all the fields on the Form.      
       
    }

    Whenever there is no Text Changed Event for the Textbox Only one Click is required to Reset. I thing due to button Click event first postback happens which execute the textchanged event and after that Button Click Event Postback loses its focus.

   How do I solve this problem.  Any help Appreciated...

Regards,

   VIKram