string xml = "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>" +
"<root>" +
"<valor>" + valor1.ToString() + "</valor>" +
"<mmv>" +
valor2.ToString() + "</mmv>" +
"<NR_PRODUTO_SAP>" +
valor3.ToString() + "</NR_PRODUTO_SAP>" +
"<VL_PC_DESCONTO>" +valor4.ToString() + "</VL_PC_DESCONTO>" +
"<VL_PC_BONUS>" + (valor5 * 100).ToString() + "</VL_PC_BONUS>" +
"<VL_PC_MARGEM_DIRETA>" +
valor6.ToString() + "</VL_PC_MARGEM_DIRETA>" +
"<PC_FLEX_MAX>" +
valor7.ToString() + "</PC_FLEX_MAX>" +
"<PC_FLEX_MIN>" +
valor8.ToString() + "</PC_FLEX_MIN>" +
"<VL_PRECO_PONTA>" +
valor9.ToString() + "</VL_PRECO_PONTA>" +
"<VL_DESCONTO>" +
valor10.ToString() + "</VL_DESCONTO>"+
//"<VL_FINAL>" +
valor11.ToString() + "</VL_FINAL>"+
"<VL_FINAL>" + string.Format("{0:n2}",
valor12) + "</VL_FINAL>"+
"</root>";
