如何使用 C# 在 XML 文件中编写符号“<”>

Question

I need help with my task, right now i'm developing a website with C# and I need to create XML labels automatically, of a text in a special label, right I get all the data and i add it in an arrays and i create all the sentence, right now i'm fine with my result.

My result is like these lines:

double M = <M>2.0</M>
double C = <C>0.59</C>
double D = <D>0.48</D>
double E = <E>0.69</E>

But right now my problem is the next, when i try to save the information to the XML file, I have two issues.

1.- I cant write the declaration of the variables between labes. 2.- When i save the information in to the XML, the symbols of "<" and ">", has change for ( > and < ).

There is a way to save the result:

double M = <M>2.0</M>
double C = <C>0.59</C>
double D = <D>0.48</D>
double E = <E>0.69</E>

Or these it's imposible?

Thanks for your time

Answer 1

Is this what you want?

<root><![CDATA[
double M = <M>2.0</M>
double C = <C>0.59</C>
double D = <D>0.48</D>
double E = <E>0.69</E>
]]></root>

Then do this in your code:

XElement root = new XElement("root", new XCData(@"
double M = <M>2.0</M>
double C = <C>0.59</C>
double D = <D>0.48</D>
double E = <E>0.69</E>
"));

Answer 2

I'm not really sure what your issue is here - presumably it's something to do with how you're putting the XML together. I've just knocked this up quickly and it works just fine:

class Program
{
    static string GetData()
    {
        return "double M = <M>2.0</M>" +
               "double C = <C>0.59</C>" +
               "double D = <D>0.48</D>" +
               "double E = <E>0.69</E>";
    }

    static void Main(string[] args)
    {
        XmlDocument doc = new XmlDocument();
        var variablesAndFunctions = doc.CreateElement("VariablesAndFunctions");
        doc.AppendChild(variablesAndFunctions);

        var constraints = doc.CreateElement("Constraints");
        constraints.InnerXml = GetData();
        variablesAndFunctions.AppendChild(constraints);

        Console.WriteLine(doc.OuterXml);
        Console.ReadLine();
    }
}

The key line is setting the InnerXml property of an element to the Xml content that was returned from the GetData function. Should work fine for you too.