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Join Date: Jun 2006
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Newbie Poster
I have an application that saves some data in xml document.
The user can add a new data to xml document.
The problem is the old data will be overwritten by the new one,How could I solve that??
Here is my code for that method which still needs "APPENDING":
The user can add a new data to xml document.
The problem is the old data will be overwritten by the new one,How could I solve that??
Here is my code for that method which still needs "APPENDING":
XmlTextWriter textWritter=new XmlTextWriter("F:/Documents and Settings/Administrator/Desktop/Account.xml", null); textWritter.WriteStartDocument(); textWritter.WriteStartElement("USER"); //User nametextWritter.WriteStartElement("UserName",""); textWritter.WriteString(txtUsrName.Text.Trim()); textWritter.WriteEndElement(); //Email textWritter.WriteStartElement("Email",""); textWritter.WriteString(txtEmail.Text.Trim()); textWritter.WriteEndElement(); textWritter.WriteEndDocument(); textWritter.Close();
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Join Date: Aug 2005
Location: Ohio
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Posting Whiz in Training
try this.
it creates its own file stream and sets the access to append.
it replaces your fiest line
it creates its own file stream and sets the access to append.
it replaces your fiest line
Stream xmlFile = new FileStream(@"c:\path",FileMode.Append);
XmlTextWriter textWritter = new XmlTextWriter(xmlFile, Encoding.Default); Last edited by plazmo : Aug 25th, 2006 at 10:57 am.
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Join Date: Mar 2006
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Posting Whiz in Training
Hi,
If you have a specific XML schema, you can use a DataSet not bound to a database or connection and provide your own schema. This way you can use all data bound controls and table cursors and at the end you can load/save the whole dataset back as XML.
Loren Soth
If you have a specific XML schema, you can use a DataSet not bound to a database or connection and provide your own schema. This way you can use all data bound controls and table cursors and at the end you can load/save the whole dataset back as XML.
Loren Soth
Crimson K. Software _________________________________________________________________ Crimson K. Blog
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Join Date: Jun 2006
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Newbie Poster
First thanks all for your time & help.
I've found out another easier way to solve my problem.
About checking whether the file is already existed or not there is static method in "system.IO" called "File.Exist" ,which check whether te file is already existed or not.
About the appending Problem ,I've used "XmlDocument" class
inorder to use some methods in it .
The result'll be like that:
</USERS>
<User>
<UserName>Buggaya</UserName>
<Email>Buggaya@gmail.com</Email>
</User>
</USERS>
Here's my code :
I've found out another easier way to solve my problem.
About checking whether the file is already existed or not there is static method in "system.IO" called "File.Exist" ,which check whether te file is already existed or not.
About the appending Problem ,I've used "XmlDocument" class
inorder to use some methods in it .
The result'll be like that:
</USERS>
<User>
<UserName>Buggaya</UserName>
<Email>Buggaya@gmail.com</Email>
</User>
</USERS>
Here's my code :
if(!File.Exists("F:/Documents and Settings/Administrator/Desktop/Account.xml")) { XmlTextWriter textWritter=new XmlTextWriter("F:/Documents and Settings/Administrator/Desktop/Account.xml", null); textWritter.WriteStartDocument(); textWritter.WriteStartElement("USERS"); textWritter.WriteEndElement(); textWritter.Close(); } XmlDocument xmlDoc=new XmlDocument(); xmlDoc.Load("F:/Documents and Settings/Administrator/Desktop/Account.xml"); XmlElement subRoot=xmlDoc.CreateElement("User"); //UserName XmlElement appendedElementUsername=xmlDoc.CreateElement("UserName"); XmlText xmlTextUserName=xmlDoc.CreateTextNode(txtUsrName.Text.Trim()); appendedElementUsername.AppendChild(xmlTextUserName); subRoot.AppendChild(appendedElementUsername); xmlDoc.DocumentElement.AppendChild(subRoot); //Email XmlElement appendedElementEmail=xmlDoc.CreateElement("Email"); XmlText xmlTextEmail=xmlDoc.CreateTextNode(txtEmail.Text.Trim()); appendedElementEmail.AppendChild(xmlTextEmail); subRoot.AppendChild(appendedElementEmail); xmlDoc.DocumentElement.AppendChild(subRoot); xmlDoc.Save("F:/Documents and Settings/Administrator/Desktop/Account.xml");
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