XmlConvert.ToDouble Method (String)

 
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Converts the String to a Double equivalent.

Namespace:   System.Xml
Assembly:  System.Xml (in System.Xml.dll)

public static double ToDouble(
	string s
)

Parameters

s
Type: System.String

The string to convert.

Return Value

Type: System.Double

A Double equivalent of the string.

Exception Condition
ArgumentNullException

s is null.

FormatException

s is not in the correct format.

OverflowException

s represents a number less than Double.MinValue or greater than Double.MaxValue.

If s is INF or -INF, this method returns Double.PositiveInfinity or Double.NegativeInfinity respectively.

The following example uses ToDouble and ToDateTime to read strongly typed data.

using System;
using System.IO;
using System.Xml;

public class Sample
{

  public static void Main()
  {
    XmlTextReader reader = new XmlTextReader("orderData.xml");

    //Parse the file and pull out the order date and price.
    while (reader.Read()){
       if (reader.NodeType==XmlNodeType.Element){
         switch(reader.Name){
           case "order":
             DateTime orderDate = XmlConvert.ToDateTime(reader.GetAttribute("date"));
             Console.WriteLine("order date: {0}", orderDate.ToString());
             break;
           case "price":
             Double price = XmlConvert.ToDouble(reader.ReadInnerXml());
             Console.WriteLine("price: {0}", price.ToString());
             break;
         }
       }
    }

    //Close the reader.
    reader.Close();  
  }
}

The example uses the file, orderData.xml, as input.

<order date="2001-05-03">
  <orderID>367A54</orderID>
  <custID>32632</custID>
  <price>19.95</price>
</order>

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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