update an xml attribute

nyjcr

Hello, 1st, sorry for such a simple question...well maybe simple I'm new to c# and especially xml. I'm using an XmlTextReader to loop through an xml document, using if statements to "stop" at certain nodes. once I stop at certain nodes, I need to update one of the attributes. How can I update a single attribute while (CashReader.Read()) { // Move to first element CashReader.MoveToElement(); if (CashReader.Name == "Shopper") { CashReader.MoveToAttribute(i); if (CTFReader.Value == frmLogin.vID) { i=2 CashReader.MoveToAttribute(i); //I NEED TO UPDATE SHOPPER HERE if (CashReader.Value == "") { //THIS IS WHERE I WANT TO INSERT THE CODE TO UPDATE THE ATTRIBUTE CTFReader.Close(); thank you in advance for the help JC

PIEBALDconsult

I suggest using an XmlDocument and its .Load method instead.

nyjcr

ok, but if I load the document then I need to go to a certain location depending on the information a user enters in a textbox I tried the below code, but I get an error "The process cannot access the file 'file.xml' because it is being used by another process."

XmlDocument upd = new XmlDocument();
upd.Load("file.xml");
XmlAttribute AttrUpd = upd.CreateAttribute("value");
AttrUpd.Value = "35.00";
upd.Save(file.xml); //THIS IS WHERE I GET THE ERROR

thanks

N a v a n e e t h

nyjcr wrote:

XmlDocument upd = new XmlDocument(); upd.Load("file.xml"); XmlAttribute AttrUpd = upd.CreateAttribute("value"); AttrUpd.Value = "35.00"; upd.Save(file.xml); //THIS IS WHERE I GET THE ERROR

It works fine at my end. But your code won't add attribute. You are not appending the attribute to any of the node. So you don't find this attribute in the file. Use XPath or upd.GetElementsByTagName() to get node, and use node.Attributes.Apped(). Call Save() then.

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