Display custome XML tag when use serializable

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C#5.0

XmlSerializer

hi
i have two class foo and wrappers
foo is my original class and i create a list from foo class
and wrappers class decorate with [serializable] and [xmlelement(ElementName=)]

this is my foo class

public class foo
 {
     public string Name { get; set; }
     public string Family { get; set; }
     public int ID { get; set; }

 }

and this is my wrappers class

[Serializable]
   public class wrappers
   {
       [XmlElement(ElementName = "FirstName")]
       public string Name { get; set; }
       [XmlElement(ElementName = "LastName")]
       public string Family { get; set; }
       [XmlElement(ElementName = "BranchCode")]
       public int ID { get; set; }
   }

when i use decorate like above custome xml is

<?xml version="1.0"?>
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <wrappers>
    <FirstName>Ali</FirstName>
    <LastName>Shahmohammadi</LastName>
    <BranchCode>1</BranchCode>
  </wrappers>
  <wrappers>
    <FirstName>Hossein</FirstName>
    <LastName>Shahmohammadi</LastName>
    <BranchCode>2</BranchCode>
  </wrappers>
</Root>

but when i use decorate like this for wrappers class

[Serializable]
   public class wrappers
   {
       [XmlElement(ElementName = "101")]
       public string Name { get; set; }
       [XmlElement(ElementName = "102")]
       public string Family { get; set; }
       [XmlElement(ElementName = "103")]
       public int ID { get; set; }
   }

custome xml tag is not currrect display and custome xml tag is

<?xml version="1.0"?>
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <wrappers>
    <_x0031_01>Ali</_x0031_01>
    <_x0031_02>Shahmohammadi</_x0031_02>
    <_x0031_03>1</_x0031_03>
  </wrappers>
  <wrappers>
    <_x0031_01>Hossein</_x0031_01>
    <_x0031_02>Shahmohammadi</_x0031_02>
    <_x0031_03>2</_x0031_03>
  </wrappers>
</Root>

and i want have custome xml like

<?xml version="1.0"?>
<Root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <wrappers>
    <101>Ali</101>
    <102>Shahmohammadi</102>
    <103>1</103>
  </wrappers>
  <wrappers>
    <101>Hossein</101>
    <102>Shahmohammadi</102>
    <103>2</103>
  </wrappers>
</Root>

What I have tried:

to create xml and use it on my application