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Getting attribute using XPath
... first book child of the top element of the XML document.
To get just the string value of this attribute use the standard XPath function string():
string(/*/book[1]/title/@lang)
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C# Regex for Guid
I need to parse through a string and add single quotes around each Guid value. I was thinking I could use a Regex to do this but I'm not exactly a Regex guru.
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How to get string width on Android?
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You can use the getTextBounds(String text, int start, int end, Rect bounds) method of a Paint object. You can either use the paint object supplied by a TextView or build one yourself with your desired text appearance.
Using a Textview you Can do the fol...
Calculating days between two dates with Java
...asses.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 = "23 01 1997";
String inputString2 = "27 04 1997";
try {
LocalDateTime date1 = LocalDate.parse(inputString1, dtf);
LocalDateTime date2 = LocalDate.parse(inputString2, dtf);
long daysBetween =...
How to download a file from a URL in C#?
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Use System.Net.WebClient.DownloadFile:
string remoteUri = "http://www.contoso.com/library/homepage/images/";
string fileName = "ms-banner.gif", myStringWebResource = null;
// Create a new WebClient instance.
using (WebClient myWebClient = new WebClient())
{
m...
Case-INsensitive Dictionary with string key-type in C#
If I have a Dictionary<String,...> is it possible to make methods like ContainsKey case-insensitive?
5 Answers
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Convert a RGB Color Value to a Hexadecimal String
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You can use
String hex = String.format("#%02x%02x%02x", r, g, b);
Use capital X's if you want your resulting hex-digits to be capitalized (#FFFFFF vs. #ffffff).
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LINQ Contains Case Insensitive
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Assuming we're working with strings here, here's another "elegant" solution using IndexOf().
public IQueryable<FACILITY_ITEM> GetFacilityItemRootByDescription(string description)
{
return this.ObjectContext.FACILITY_ITEM
.Where(fi =&g...
How could I convert data from string to long in c#
How could i convert data from string to long in C#?
9 Answers
9
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Regular expression for floating point numbers
...al numbers, such as hex and octal, see my answer to How do I identify if a string is a number?.
If you want to validate that an input is a number (rather than finding a number within the input), then you should surround the pattern with ^ and $, like so:
^[+-]?([0-9]+([.][0-9]*)?|[.][0-9]+)$
Irr...