Develop Reference

C# XDocument right way to escape symbols

Hello I'm struggling with escaping in xml, problem is my output is escaped 2 times and I dont understand why its happening.
Code below:
private static string FixSingleEncoding(string data)
{
//data?.Replace("&", "&").Replace("<", "<").Replace(">", ">").Replace(""", """).Replace("'", "&apos;");
return System.Net.WebUtility.HtmlEncode(data); //SecurityElement.Escape(data);//
}
private static XDocument FixEncoding(XDocument instance)
{
XNamespace naming = instance.Root.Name.Namespace;
var result = instance.Descendants(naming + "dataset").ToList();
var count = result.Count;
for (int i = 0; i < count; i++)
{
result[i].Value = FixSingleEncoding(result[i].Value);
}
return instance;
}
public static bool CreateNewDataset(string path, string data)
{
Debug.WriteLine("CALL");
XDocument xdoc = XDocument.Load(Path.Combine(MasterLocation, path));
xdoc = FixEncoding(xdoc);
XNamespace df = xdoc.Root.Name.Namespace;
XElement root = new XElement(df+"changeSet");
root.Add(new XAttribute("id", "My Name"));
root.Add(new XAttribute("author", "Test"));
string final = data;
XElement innerelement = new XElement(df + "data", final);
innerelement.Add(new XAttribute("endDelimiter", "GO"));
root.Add(innerelement);
xdoc.Root.Add(root);
xdoc.Save(Path.Combine(MasterLocation, path));
return true;
}
Problem is when I first time load xml file and use method CreateNewDataset it retrieves all data from xml file and unescape old data, so I put FixEncoding method, but then another problem showed up, now it escapes two times, how do I know that exactly two times, well using VS Code and converting XML Entity to string, it needs to converted 2 times to readable string, CreateNewDataset method is called only once, but data escaped two times, what do I miss here?
entered data
IF EXISTS ( SELECT *
FROM sysobjects
WHERE id = object_id(N'[dbo].[table1]')
and OBJECTPROPERTY(id, N'IsProcedure') = 0)
orginal code before CreateNewDataset:
<changeSet id="Test" author="My Name">
<data endDelimiter="GO">
IF EXISTS ( SELECT *
FROM sysobjects
WHERE id = object_id(N&apos;[dbo].[table1]&apos;)
and OBJECTPROPERTY(id, N&apos;IsProcedure&apos;) = 0)
</data>
</changeSet>
AFTER createnewdataset(without FixEncoding)
<changeSet id="Test" author="My Name">
<data endDelimiter="GO">
IF EXISTS ( SELECT *
FROM sysobjects
WHERE id = object_id(N'[dbo].[table1]')
and OBJECTPROPERTY(id, N'IsProcedure') = 0)
</data>
</changeSet>

Csv DataGridView Conversion to XML Winforms

so I am working on my project and I want to write datagridview which is from a CSV file into XML file and I have achieved that but what I want to know if there is any way to sort the order view or change the outcome of XML what I want is to sort Alphabetical order from a specific column. this is my code for the saving XML file.
if (saveFileDialogXml.ShowDialog() == DialogResult.OK)
{
//Xml Alphabetical order code goes here
DataTable dst = new DataTable();
dst = (DataTable)Datagridview1.DataSource;
dst.TableName = "Data";
dst.WriteXml(saveFileDialogXml.FileName);
}
}
but the output of this is
<?xml version="1.0" standalone="yes"?>
<Item_x0020_Code>Item Code</Item_x0020_Code>
<Item_x0020_Description>Item Description</Item_x0020_Description>
<Current_x0020_Count>Current Count</Current_x0020_Count>
<On_x0020_Order>On Order</On_x0020_Order>
as you can see it even put the Hexadecimal and it just throws everything there, so I was wondering if i can reformat it the way I want it to display like removing the x0020. So I tried using LINQ to see if there was a problem with file, but I keep getting another error which says
System.Xml.XmlException: 'The ' ' character, hexadecimal value 0x20, cannot be included in a name.'
This is the LINQ code :
var xmlFile = new XElement("root",
from line in File.ReadAllLines(#"C:\\StockFile\stocklist.csv")
.Where(n => !string.IsNullOrWhiteSpace(n))
where !line.StartsWith(",") && line.Length > 0
let parts = line.Split(',')
select new XElement("Item Code",
new XElement("Test1", parts[0]),
new XElement("Test2", parts[1])
)
);
Also, I am new to C# and my first post here so please excuse the messy writing or placements.

Try following :
DataTable dst = new DataTable();
int startColumn = 5;
for(int i = dst.Columns.Count - 1; i >= startColumn; i--)
{
dst = dst.AsEnumerable().OrderBy(x => dst.Columns[i]).CopyToDataTable();
}

Sorry for the late Reply I kinda figured it out so forgot to close or mark an answer anyway if any of you run to the same thing all I did was this
// Save file dialogue XML file.
if (saveFileDialogXml.ShowDialog() == DialogResult.OK)
{
//try block to catch exception and handle it.
try
{
//Changing Data Table name to stock.
string Stock = ((DataTable)Datagridview1.DataSource).TableName;
}
//Catching the exception and handling it.
catch (Exception)
{
string es = "Please Open The File Before Saving it";
string title = "Error";
MessageBox.Show(es, title);
}
// instatiate new DataTable.
DataTable dt = new DataTable
{
TableName = "Stock"
};
for (int i = 0; i < Datagridview1.Columns.Count; i++)
{
//if (dataGridView1.Columns[i].Visible) // Add's only Visible columns.
//{
string headerText = Datagridview1.Columns[i].HeaderText;
headerText = Regex.Replace(headerText, "[-/, ]", "_");
DataColumn column = new DataColumn(headerText);
dt.Columns.Add(column);
//}
}
foreach (DataGridViewRow DataGVRow in Datagridview1.Rows)
{
DataRow dataRow = dt.NewRow();
// Add's only the columns that I need
dataRow[0] = DataGVRow.Cells["Item Code"].Value;
dataRow[1] = DataGVRow.Cells["Item Description"].Value;
dataRow[2] = DataGVRow.Cells["Current Count"].Value;
dataRow[3] = DataGVRow.Cells["On Order"].Value;
dt.Rows.Add(dataRow); //dt.Columns.Add();
}
DataSet ds = new DataSet();
ds.Tables.Add(dt);
//Finally the save part:
XmlTextWriter xmlSave = new XmlTextWriter(saveFileDialogXml.FileName, Encoding.UTF8)
{
Formatting = Formatting.Indented
};
ds.DataSetName = "Data";
ds.WriteXml(xmlSave);
xmlSave.Close();

C# (Xamarin): looping through XML

I have a Xamarin (C#) project, where I am trying to loop through some XML, but for some reason my code is not working.
This is what I have now:
DeviceList = new List<DeviceInfo>();
string ResultStatus = "";
string ResultDevice = "";
var result = Encoding.Default.GetString(e.Result);
result = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + result;
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(result);
string xPathStatus = "ed_listdevices";
var nodes = xmlDoc.SelectNodes(xPathStatus);
foreach (XmlNode xNode in nodes) {
ResultStatus = xNode.SelectSingleNode("//status").InnerText;
ResultDevice = xNode.SelectSingleNode("//device").InnerText;
}
if (ResultStatus.ToLower() == "ok") {
XmlDocument deviceDoc = new XmlDocument();
deviceDoc.LoadXml(result);
var deviceNodes = deviceDoc.SelectNodes(xPathStatus + "/device");
//foreach(XmlNode dNode in deviceNodes) {
for (int i = 0; i < deviceNodes.Count; i++) {
DeviceList.Add(new DeviceInfo() {
DeviceID = deviceNodes[i].SelectSingleNode("//id").InnerXml,
DeviceName = deviceNodes[i].SelectSingleNode("//name").InnerXml,
DeviceExtraName = "",
DeviceOnlineStatus = deviceNodes[i].SelectSingleNode("//status").InnerXml,
Location = deviceNodes[i].SelectSingleNode("//address").InnerXml,
Time = deviceNodes[i].SelectSingleNode("//time").InnerXml
});
}
}
When I step though the code I get the "ResultStatus" and "ResultDevice" correctly, and when I get to the
for (int i = 0; i < deviceNodes.Count; i++)
the "deviceNodes" variable have a count of 91, and I can see all the individual xml elements that I am suppose to get from the webservice I am calling.
However, when I loop through deviceNodes[i] I only get values from the very first XML element (yes, the value of "i" does change). In other words, my DeviceList is filled with 91 entries with the same values.
Am I missing something obvious?? What am I doing wrong since this isn't working??
PS: I have also tried using a foreach (XmlNode node in deviceNodes) but the result was the same.

"//" in the selector tells it to search from the root node of the document. If you want to search locally under the "current" node, remove the "//"

Add XML data to listbox

Total C# beginner here working on my first simple task list app from a windows form.
I am trying to import data from an XML file into a listbox, however I keep encountering the problem that instead of the actual data (e.g. "Pick up groceries", "Fix car", "Get better at this!") I keep getting lots of other data such as "
DocumentProperties xmlns="um.schemas-microsoft-come:office:office"
.... etc
I start off by loading the dialog box to select the file (saving as string 'file').
My code is then;
XDocument doc = XDocument.Load(file);
foreach (XElement el in doc.Root.Elements())
{
el.ToString();
var task = el;
listBox1.Items.Add(task);
}
I have tried a few different approaches and no luck reading from my test xml file. Is there something simple I am missing?
Thanks in advance for your help.

Your mistake is that you don't specify the TagName, for your root xml document.
This is an example how to read a XML file :
My XML File :
<?xml version="1.0" encoding="utf-8"?>
<head>
<Config>
<port>80</port>
<thread>5</thread>
<gSave>0</gSave>
<bSave>0</bSave>
</Config>
</head>
And the example how to read that XML:
protected string[] Config()
{
var retStrings = new[] {"","","",""};
var xd = new XmlDocument();
var fs = new FileStream("data/config.xml", FileMode.Open);
xd.Load(fs);
var list = xd.GetElementsByTagName("Config");
for (var i = 0; i < list.Count; i++)
{
retStrings[0] = xd.GetElementsByTagName("port")[i].InnerText;
retStrings[1] = xd.GetElementsByTagName("thread")[i].InnerText;
retStrings[2] = xd.GetElementsByTagName("gSave")[i].InnerText;
retStrings[3] = xd.GetElementsByTagName("bSave")[i].InnerText;
}
fs.Close();
return retStrings;
}
If you could show me your XML file, I would give you a specific example.

Try the below snippet..
DataSet ds = new DataSet();
ds.ReadXml(#"C:\demo.xml");
if (ds.Tables.Count > 0)
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
for (int j = 0; j < ds.Tables[0].Columns.Count; j++)
{
listBox1.Items.Add(ds.Tables[0].Rows[i][j].ToString());
}
}
}

Read XML file from URL, comes up empty

I am trying to read a XML file from a URL.
The URL and file are fine, they hold currency rates.
When running the code 9 out of 10 times, no content comes back.
Here is the code:
XDocument doc = XDocument.Load("http://www.boi.org.il/currency.xml");
int currID = 0;
Dictionary<int, Currency> curr; // declares the dictionary
curr = new Dictionary<int, Currency>();
var data = from item in doc.Descendants("CURRENCY") // LINQ the informartion from the xml to data variable
select new
{
name = item.Element("NAME").Value,
country = item.Element("COUNTRY").Value,
currencyCode = item.Element("CURRENCYCODE").Value,
rate = Convert.ToDouble(item.Element("RATE").Value),
unit = Convert.ToDouble(item.Element("UNIT").Value),
change = Convert.ToDouble(item.Element("CHANGE").Value),
};
foreach (var xn in data) // run in foreach on the data that we read from the xml and put it in a currency variable into the dictionary
{
Currency currency = new Currency();
currency.Name = xn.name;
currency.Country = xn.country;
currency.CurrencyCode = xn.currencyCode;
currency.Rate = Convert.ToDouble(xn.rate);
currency.Unit = Convert.ToDouble(xn.unit);
currency.Change = Convert.ToDouble(xn.change);
curr.Add(currID, currency);
currID++;
}
foreach (KeyValuePair<int, Currency> entry in curr)
{
Console.WriteLine(entry.Value.CurrencyCode);
}
I have edited the code to see the output, I get nothing.
What am I doing wrong?
Thanks in advance.

#David Faiz It Works!
XmlDocument xDoc = new XmlDocument();
xDoc.Load(#"http://www.boi.org.il//currency.xml");
XmlNodeList xmllist = xDoc.GetElementsByTagName("CURRENCIES");
Console.WriteLine(xmllist.Count);
You have must add // slashes in the URL. That is why u got the 'xmllist.Count' as Zero.

Here's a quick refactor of your code..
XDocument doc = XDocument.Load(#"http://www.boi.org.il/currency.xml");
foreach (XElement elm in doc.Elements)
{
Currency currency = new Currency();
currency.Name = elm.Element("NAME").Value;
currency.Country = elm.Element("COUNTRY").Value;
currency.CurrencyCode = elm.Element("CURRENCYCODE").Value;
currency.Rate = Convert.ToDouble(elm.Element("RATE").Value);
currency.Unit = Convert.ToDouble(elm.Element("UNIT").Value);
currency.Change = Convert.ToDouble(elm.Element("CHANGE").Value);
MessageBox.Show(elm.Element("CURRENCYCODE").Value);
curr.Add(currID, currency);
currID++;
}
However, I'm not sure this addresses the underlying issue you're having..
You could include the System.Net namespace and initialize a XMLHttpRequest object and use the Response stream with the static XDocument.Load() method..