c# - Overwrite a xml file value -

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i have xml file this

<count>0</count>

now wish overwrite value 0. how do in c#?

edit

<counter>   <count>0</count>   <email>   </email> </counter>`

this xml file wish write value in email element , change value of count element 

            xmldocument doc = new xmldocument();             doc.load(counter);             foreach (xmlnode node in doc.selectnodes("count"))             {                 node.innertext = (count-1).tostring();             }             foreach (xmlnode node in doc.selectnodes("email"))             {                 node.innertext = (count - 1).tostring();             }             doc.save(counter); `

when no values written file

your direct problem use of doc.selectnodes("count") instead of doc.getelementsbytagname("count")


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