Accessing a child node by name of an XML document using C# -

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i have situation xml document contained similar following, order of "block" elements changed, , in application, accessing value of in using getelementsbytagname("amount")[0].innertext, first occurrence of "amount". order of "blocks" changed, , "amount" returned getelementsbytagname still first occurrence, want "amount" in "block1" returned. how accomplish in c#?

before:

<response xmlns="testsite.com/schema/testservice/2015-01-01">   <block1>      <amount>$5.00</amount>   </block1>   <block2>      <amount>$0.00</amount>   </block2>   <block3>      <amount>$0.00</amount>   </block3> </response>

after:

<response xmlns="testsite.com/schema/testservice/2015-01-01">   <block2>      <amount>$0.00</amount>   </block2>   <block3>      <amount>$0.00</amount>   </block3>   <block1>      <amount>$5.00</amount>   </block1> </response>

c#:

xmldocument doc = new xmldocument(); doc.loadxml(response);  string amount = doc.getelementsbytagname("amount")[0].innertext;

you can use method selectsinglenode , xpath expression access data need. need use namespace manager , import correct namespace:

var namespacemanager= new xmlnamespacemanager(doc.nametable); namespacemanager.addnamespace("a", "testsite.com/schema/testservice/2015-01-01");  var xmlnode = doc.selectsinglenode("/a:response/a:block1/a:amount", namespacemanager); var value = node.innertext;    // prints $5.00

such code find correct value regardless of block1 - first, second or third element. method selectsinglenode returns first node matches expression, if have more 1 block1 element in xml results might not expect


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