I need a sufficient way to write and read the XML into the file which does not effect on performance and memory. There are several options that will help you and your application to work properly without to much hassle. Have a look at this, it will give you some idea about fast reading the xml. How to write big XML to a file in C? However, i think if you are looking for really good performance, some database solutions e.
Use this link. Use XmlReader , It is a nice alternative to allowing us to have only the current record into memory which could hugely improve performance. Edit: Never use Load method. It will load the whole XML file in memory and if this file is quite big, not only the query might take long time to execute but it might fail running out of memory. Up to certain extent the performance quite depends on. NET version your application is running on. Another quick reference is Microsoft Patterns and Practices article.
It represents the contents of an XML file. When loading it from a file, you read the entire file into memory. These demands may severely limit the scalability of server-side Web applications.
It might help achieving better in performance as compared to XmlDocument. As others have already suggested. It can read from a file, from an internet location, or from any other stream of data. When reading from a file, you don't load the entire document at once.
And that is where it shines on. Create, which affects the XDocument. It can be turned on via the Normalization property. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
These details are not difficult to handle, when it has become clear where the difference in behaviour is, but it is important to carefully debug existing code when changing from one serializer to the other.
The remainder of this article reviews the details of the DataContractSerializer implementation, while the XMLSerializer implementation is covered with the attached downloads - mainly because the XMLSerializer cannot implement a hidden class model and the DataContractSerializer is a more recent class that should be considered as preference over the XMLSerializer since it offers the same features plus more advanced functions.
This requires a reference to the System. Serialization assembly and a using statement with that namespace. We also have to replace the previously stated pattern for reading and writing child items with a pattern that is specific to the DataContractSerializer:.
This is all that is required towards using an XML serializer with a completely hidden data model implementation. All solutions discussed so far in this article are still naive with respect to the usage of an XML Schema Definition XSD , which is typically used to ensure that all data items match an expected consistency.
The next section evaluates that point with the DataContractSerializer to make things even more robust towards failures that usually occur in production. The XsdDataContract. The exported XSD is not much to talk about in terms of detail and so forth but maybe this detail is useful to someone else.
The project shows that the XmlReaderSettings class can contain multiple schema definitions short schemas or XSDs which in turn can be used to initialize an XmlReader. The XmlReader can then use the call back function to report any errors or warnings, if they are necessary.
This sample has extended read XML method signatures to accommodate for the additional schemas:. These schemas are handed off to the XmlReader to report back information whenever the XML does not meet the specified expectations in the TreeModel.
We can verify this, if we open the TreeModel. Net framework also supports the ISerializable interface for serializing objects into a binary format. This form of serialization was not part of this article since it is not interoperable and is very similar to the IXmlSerializable interface. I have not actually tried this, but I would expect that using the IXmlSerializable interface together with a zip container can yield similar performance and space requirements especially when reading data as the ISerializable interface can provide.
The support for XML in the. Net framework is huge and the mentioned interfaces and techniques in this article are by no means complete. Xml namespace contains more classes. Next namespace in Xml series is System. Serialization namespace contains classes that are used to serialize objects into XML format documents or streams.
This class contains many Move methods to move through a document. This file comes with VS. NET samples. You can search this on your machine and change the path of the file in the following line:. Besides XmlReader methods and properties, these classes also contain members to read text, node, and schemas respectively.
You read a file by passing file name as a parameter in constructor. After read method is called, you can read all information and data stored in a document. The NodeType property of XmlTextReader is important when you want to know the content type of a document. List 2 code sample reads an XML document, finds a node type and writes information at the end with how many node types a document has.
Highly Recommended. I have published a free book on XML programming using C. Get your free copy here. Still hungry for more XML programming with C and. Here is a dedicated section with hundreds of articles and code samples on XML programming using C and. After reading a node, I check its NodeType property to find the node and write node contents to the console and keep track of number of particular type of nodes.
In the end, I display total number of different types of nodes in the document. XmlWriter class contains the functionality to write to XML documents. It contains methods and properties to write to XML documents. This class has several Writexxx method to write every type of item of an XML document.
Some of these methods are used in a start and end pair. Besides many methods, this class has three properties. The WriteState gets and sets the state of the XmlWriter class. First thing we need to do is create an instance of XmlTextWriter using its constructor. XmlTextWriter has three overloaded constructors, which can take a string, stream, or a TextWriter as an argument.
You must have to open a document before start writing to it. WriteComment method writes comment to a document. It takes only one string type of argument. WriteString method writes a string to a document. WriteNode is more write method, which writes an XmlReader to a document as a node of the document.
After that, we add comments and elements to the document using Writexxx methods. After that we read our books. This class provides similar methods and properties we've discussed earlier in this article.
Load and LoadXml are two useful methods of this class.
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