c# - save xml file using streamwriter -

i trying find way save data xml file encoding "iso-8859-7".

firstly loading xml using

    public xmldocument loaddocument(string x)     {         xmldocument document = new xmldocument();         streamreader stream = new streamreader(xml, encoding.getencoding("iso-8859-7"));         document.load(stream);         return (document);     } 

to load attributes inside form controls , when save button clicked

    private void savebtn_click(object sender, eventargs e)     {         xmlnodelist attributes = commonmethods.loaddocument(xml).documentelement.selectnodes("//class[@name='" + classname + "']/property[@id='" + id + "']/attribute::*");         (int x = 0; x < attributes.count; )         {             foreach (control ctr in table1.controls)             {                 if (ctr textbox)                 {                     if (ctr.text == attributes[x].value.tostring()) { x++; }                     else                     {                         attributes[x].value = ctr.text; commonmethods.savedocument(xml);                         x++;                     }                 }                 else if (ctr combobox)                 {                     if (((combobox)ctr).text == attributes[x].value) { x++; }                     else                     {                         attributes[x].value = ((combobox)ctr).text; commonmethods.savedocument(xml);                         x++;                     }                 }             }         }     } 

it saves changes xml file. used save without using xmlwriter xmldoc.save("sample.xml) because of characters inside file had use different approach like.

    public xmldocument savedocument(string x)     {         xmldocument document = new xmldocument();         streamwriter stream = new streamwriter(x,false,encoding.getencoding("iso-8859-7"));         document.save(xml);         return (document);     } 

the problem when compile says "xml used process" , fails.

system.io.ioexception

you've got exception because file still opened streamreader pending finalization (garbage collection). should dispose streams (and reader / writers) release file handle possible.

public xmldocument loaddocument(string path) {     xmldocument document = new xmldocument();     using (streamreader stream = new streamreader(path, encoding.getencoding("iso-8859-7")))     {         document.load(stream);      }     return (document); }   public xmldocument savedocument(xmldocument document, string path) {     using (streamwriter stream = new streamwriter(path,false,encoding.getencoding("iso-8859-7")))     {         document.save(stream);     }     return (document); }   private void savebtn_click(object sender, eventargs e) {     var doc = commonmethods.loaddocument(xml);     xmlnodelist attributes = doc.documentelement.selectnodes("//class[@name='" + classname + "']/property[@id='" + id + "']/attribute::*");     (int x = 0; x < attributes.count; )     {         foreach (control ctr in table1.controls)         {             if (ctr textbox)             {                 if (ctr.text == attributes[x].value.tostring()) { x++; }                 else                 {                     attributes[x].value = ctr.text; commonmethods.savedocument(doc, xml);                     x++;                 }             }             else if (ctr combobox)             {                 if (((combobox)ctr).text == attributes[x].value) { x++; }                 else                 {                     attributes[x].value = ((combobox)ctr).text; commonmethods.savedocument(doc, xml);                     x++;                 }             }         }     } }