How to Read/Write xml string in different way using C#.net

How to Read/Write xml string in different way using C#.net

Namespace

using System.Xml;

using System.Xml.Xsl;

using System.Xml.XPath;

using System.IO;

using System.Text;

Example Value

string xmlProduct = "<product><details><code value ="MDI">100</code></details></product>"

Read XML

1) First way you can read string xml using dataset

StringReader productDetails = new StringReader(xmlProduct);

DataSet dsProduct = new DataSet();

dsProduct.ReadXml(productDetails);

2) If you have proper XML format value in file

DataSet dsProduct = new DataSet();

dsProduct.ReadXml("C:\Read.xml");

3) You can use XmlTextReader to read xml

string nodeText; int depth;

//In this way you can convert Xmlstring to memoryStream

byte[] data = Encoding.ASCII.GetBytes(xmlProduct);

MemoryStream memStream = new MemoryStream(data);

XmlTextReader textReader = new XmlTextReader(memStream);

XmlNodeType nodeType;

while (textReader.Read())

{

textReader.MoveToFirstAttribute();

nodeType = textReader.NodeType;

if (nodeType.CompareTo(XmlNodeType.Attribute) == 0)

{

nodeText = textReader.Value;

depth = textReader.Depth;

}

}

4) You can use CmlDocument object to read xml,This is the best way to read xml string to read node by node and all attributes.

XmlDocument xmlProductDoc = new XmlDocument();

xmlProductDoc.LoadXml(xmlProduct);

for (int i = 0; i < xmlProductDoc.GetElementsByTagName("product").Count;i++)

{

string xmlVal = xmlProductDoc.GetElementsByTagName("product").innerXml;

string xmlAttributeVal = xmlProductDoc.GetElementsByTagName("product").

Attributes ["value"].value;

}

Write XML

1) You can use XmlTesWriter to write xml file

XmlTextWriter myXmlTextWriter = new XmlTextWriter("books.xml", null);

myXmlTextWriter.Formatting = Formatting.Indented;

myXmlTextWriter.WriteStartDocument(false);

myXmlTextWriter.WriteDocType("bookstore", null, "books.dtd", null);

myXmlTextWriter.WriteComment("This file represents inventory database");

myXmlTextWriter.WriteStartElement("bookstore");

myXmlTextWriter.WriteStartElement("book", null);

myXmlTextWriter.WriteAttributeString("genre", "autobiography");

myXmlTextWriter.WriteAttributeString("publicationdate", "1990");

myXmlTextWriter.WriteAttributeString("ISBN", "0-4567-123-9");

myXmlTextWriter.WriteElementString("title", null, "Baby book");

myXmlTextWriter.WriteStartElement("Author", null);

myXmlTextWriter.WriteElementString("first-name", "Ritesh");

myXmlTextWriter.WriteElementString("last-name", "Kesharwani");

myXmlTextWriter.WriteEndElement();

myXmlTextWriter.WriteElementString("price", "8.9");

myXmlTextWriter.WriteEndElement();

myXmlTextWriter.WriteEndElement();

//Write the XML to file and close the myXmlTextWriter

myXmlTextWriter.Flush();

myXmlTextWriter.Close();

2) Basic way to write xml into file

http://riteshk.blogspot.com/2005/03/how-to-readwrite-into-xml.html

How to select all run time generated Check Box.

How to select all run time generated Check Box.

Server Side Code in C#

//This function will fetch all the controls in the page

//you can make a filter based on control you want using

//"UnderlyingSystemType.Name" property

//Here recursive function used to get into controls inside controls

private void CheckBoxSelection(ControlCollection ctl, bool chkFlg)

{

CheckBox chkBox;

foreach (Control con in ctl)

{

if (con.GetType().UnderlyingSystemType.Name == "CheckBox")

{

chkBox = (CheckBox)Page.FindControl("UserControl").FindControl(con.ID);

chkBox.Checked = chkFlg;

}

if (con.HasControls())

{

CheckBoxSelection(con.Controls, chkFlg, chkIsModel);

}

}

}

//Same way you can get the controls value

private void GetSelectedCheckBoxValue(ControlCollection ctl)

{

ArrayList arrSelectedValue = new ArrayList();

CheckBox chk1;

foreach (Control con in ctl)

{

if (con.GetType().UnderlyingSystemType.Name == "CheckBox")

{

chk1 = (CheckBox)Page.FindControl("UserControl").FindControl(con.ID);

if (chk1.Checked)

arrSelectedValue.Add(con.ID);

}

if (con.HasControls())

{

GetSelectedCheckBoxValue(con.Controls);

}

}

}

Client Side Code in JavaScript supported by IE, Netscape and Mozilla

function CheckBoxSelection(flg)

{

// This line gives all the "Input" control in a page

var chk = window.document.getElementsByTagName("Input");

for (i =0;i<chk.length;i++)

{

// based on the ID prefix you can put condition

if (chk[i].id.indexOf("chk") != -1)

{

if (flg == "false")

{

chk[i].checked = false;

}

else

{

chk[i].checked = true;

}

}

}

}

Call Java script function from Code behind

rdoSelectAll.Attributes.Add("OnClick", "CheckBoxSelection('true')");

rdoClearAll.Attributes.Add("OnClick", "CheckBoxSelection('false')");

Note: rdoSelectAll and rdoClearAll is radio button controls

Generate runtime Check Box controls

private void GenerateModelTable(string[] modelNames)

{

Table tblModel = new Table();

for (int count = 0; count < modelNames.Length; count++)

{

TableRow trModel = new TableRow();

TableCell tcChkModel = new TableCell();

TableCell tcModel = new TableCell();

CheckBox chkModel = new CheckBox();

chkModel.ID = "chk" + "_" + modelNames[count];

tcChkModel.Controls.Add(chkModel);

tcModel.Text = modelNames[count];

trModel.Controls.Add(tcChkModel);

trModel.Controls.Add(tcModel);

tblModel.Controls.Add(trModel);

}

pnlModel.Controls.Add(tblModel);

}