Daylight time value calculate in Sharepoint and Asp.Net

Below is the code to get the Daylight time . Method public static DateTime GetZoneBasedDateTime(TimezoneName zone) { try { string strzoneId = GetEnumStringValue(zone); var dt = DateTime.UtcNow; var tz = TimeZoneInfo.FindSystemTimeZoneById(strzoneId); var utcOffset = new DateTimeOffset(dt, TimeSpan.Zero); DateTime dtResult = utcOffset.ToOffset(tz.GetUtcOffset(utcOffset)).DateTime; return dtResult; } catch (Exception ex) { WriteLogToFile("GetZoneTime(TimZoneName zone)", ex.Message, null, true); return DateTime.MinValue; } } } Enum public enum TimezoneName { [StringValueAttribute("Singapore Standard Time")] Asia = 1, [StringValueAttribute("W. Europe Standard Time")] Geneva = 2, [StringValueAttribute("Central Standard Time")] Hoston = 3, [StringValueAttribute("None")] None = 0 }

Enum with String Value Tagging

I have an requirement where I need to get a string value from Enum like KeyValue mapping. Below is the process to use Enum like a KeyValue mapping and get the keyvalue passing enum name . using System.Reflection; Declare a custom class. [AttributeUsage( AttributeTargets.Field )] public sealed class StringValueAttribute : Attribute { private string _value; public StringValueAttribute(string value) { _value = value; } public string Value { get { return _value; } } } Enum declaration. public enum TimezoneName { [StringValueAttribute("Singapore Standard Time")] Asia = 1, [StringValueAttribute("W. Europe Standard Time")] Geneva = 2, [StringValueAttribute("Central Standard Time")] Hoston = 3, [StringValueAttribute("None")] None = 0 } Get string value from Enum. public static string GetEnumStringValue(Enum evalue) { string output = null; if (evalue != null) { Type type = evalue.GetType(); FieldInfo fi = type.GetField(evalue.ToString()); StringValueAttribute[] attrs =fi.GetCustomAttributes(typeof(StringValueAttribute),false) as StringValueAttribute[]; if (attrs.Length > 0) { output = attrs[0].Value; } } return output; }

Write log for application

private void WriteLogToFile(string errorSource, string message, Exception exception, bool isNewLine) { try { // FileStream fs = new FileStream(ConfigurationManager.AppSettings.Get("ErrorLog"), FileMode.Append, FileAccess.Write, FileShare.ReadWrite); StreamWriter errorLog = new StreamWriter(fs); if (isNewLine) errorLog.WriteLine("-".PadRight(100, '-')); errorLog.WriteLine(DateTime.Now); if (errorSource != null) errorLog.WriteLine(errorSource); if (message != null) errorLog.WriteLine(message); if (exception != null) errorLog.WriteLine(exception); errorLog.Close(); fs.Close(); fs.Dispose(); } catch (Exception ex) { } }

DateTime Filter in CAML

While filtering data on datetime field use SPUtility.CreateISO8601DateTimeFromSystemDateTime(DateTime.UtcNow) for sharepoint in CAML.

Create Newline in Infopath form

"?xml version="1.0" encoding="UTF-8"?> ?characters cr=" " lf=" " crlf=" " /">

Call WebService using Javascript

<script type="text/javascript" src="jquery-1.3.2.min.js"></script> <script type="text/javascript" src="jquery.SPServices-0.6.1.min.js"></script> <script language="javascript" type="text/javascript"> $(document).ready(function() { }); //****************** Create a list item *******************// function CreateNewItem() { var title=document.getElementById("txtTitle").value; var batch = "<Batch OnError=\"Continue\"> \ <Method ID=\"1\" Cmd=\"New\"> \ <Field Name=\"Title\">" + title + "</Field> \ </Method> \ </Batch>"; var soapEnv = "<?xml version=\"1.0\" encoding=\"utf-8\"?> \ <soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance/" \ xmlns:xsd=\"http://www.w3.org/2001/XMLSchema/" \ xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope//"> \ <soap:Body> \ <UpdateListItems xmlns=\"http://schemas.microsoft.com/sharepoint/soap//"> \ <listName>TestList</listName> \ <updates> \ " + batch + "</updates> \ </UpdateListItems> \ </soap:Body> \ </soap:Envelope>"; $.ajax({ url: "http://sharepoint.server/sites/yoursite/_vti_bin/lists.asmx", beforeSend: function(xhr) { xhr.setRequestHeader("SOAPAction", "http://schemas.microsoft.com/sharepoint/soap/UpdateListItems"); }, type: "POST", dataType: "xml", data: soapEnv, complete: Result, contentType: "text/xml; charset=utf-8" }); } function Result(xData, status) { } </script>

Check Postback in Javascript

function isPostBack() {
return document.referrer.indexOf(document.location.href) > -1;
}