protected void btnBuscaServico_Click(object sender, EventArgs e)
        {
            DtServicos = ServDal.Listar();
            GVServicosOS.DataSource = DtServicos;
            GVServicosOS.DataBind();

            System.Text.StringBuilder sb = new System.Text.StringBuilder();
            sb.Append(@"<script type='text/javascript'>");
            sb.Append("$('#ServicosModal').modal('show');");
            sb.Append(@"</script>");

            ScriptManager.RegisterStartupScript(this, GetType(), "ServicosScript", sb.ToString(), false);
        }
 protected void GVServicosOS_PageIndexChanging(object sender, GridViewPageEventArgs e)
 {
     GVServicosOS.PageIndex  = e.NewPageIndex;
     GVServicosOS.DataSource = ServDal.Listar();
     GVServicosOS.DataBind();
 }