neremin

public static class WinForms
{
    public static Form FindMainForm()
    {
        return Form.FromHandle(Process.GetCurrentProcess().MainWindowHandle) as Form;
    }
}

neremin

/// <devdoc>
/// Based on Andrey Markeev's example http://sharepoint.stackexchange.com/a/28522
/// </devdoc>
public static class SPFieldMultiChoiceExtensions
{
    public const string MultiValueSeparator = ";#";
    private const string ValueAttributeName = "Value";
    private const string MappingsElementName = "MAPPINGS";
    private const string MappingElementName = "MAPPING";

neremin

// On your page with SaveButton you could do the following trick 
// (in my case save button is added in DataFormWebPart's XSL markup):

SPContext itemContext;
DataFormWebPart dataForm; // from designer's code behind

void Page_Init(object sender, EventArgs e)
{
    // NOTE: by some reason ItemContexts of controls in DFWP are differ,
    // so only SaveButton's OnSaveHandler is invoked

neremin

public static class LinqExtensions
{
    /// <summary>
    /// Final method, instructing to iterate through sequence elements immediately.
    /// </summary>
    /// <typeparam name="T">Type of sequence element.</typeparam>
    /// <param name="source">Processed sequence.</param>
    public static void Do<T>(this IEnumerable<T> source)
    {
        using (var e = source.GetEnumerator())

neremin

using System;
using System.Text;

/*
COPYRIGHT
Character transliteration tables:
Copyright 2001, Sean M. Burke <sburke@cpan.org>, all rights reserved.

Python code:
Copyright 2009, Tomaz Solc <tomaz@zemanta.com>

neremin

public static class StringExtensions
{
    static readonly WeakLazy<char[]> InvalidFileNameChars = new WeakLazy<char[]>(Path.GetInvalidFileNameChars);

    static readonly WeakLazy<char[]> InvalidPathChars = new WeakLazy<char[]>(Path.GetInvalidPathChars);

    [Pure]
    public static bool IsValidFileName(this string name)
    {
        return !string.IsNullOrEmpty(name) && name.IndexOfAny(InvalidFileNameChars.Value) == -1;

neremin

public static class BytesHelper
{
    public static bool Equals(byte[] arrayA, byte[] arrayB)
    {
        Contract.Requires<ArgumentNullException>(arrayA != null);
        Contract.Requires<ArgumentNullException>(arrayB != null);
            
        var length = arrayA.Length;
        return length == arrayB.Length && UnsafeEquals(arrayA, 0, arrayB, 0, length);
    }

neremin

public abstract class WeakLazy<T> where T : class
{
    protected readonly Func<T> valueFactory;
    internal protected WeakLazy(Func<T> valueFactory)
    {
        Contract.Requires<ArgumentNullException>(valueFactory != null);
        this.valueFactory = valueFactory;
    }

    public abstract T Value { get; }

neremin

public static class InterlockedFactory
{
    public static T GetOrCreate<T>(ref T value, Func<T> valueFactory) where T : class
    {
        if (ReferenceEquals(value, null))
        {
            if (valueFactory == null)
            {
                throw new ArgumentNullException("valueFactory");
            }

neremin

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <!-- USAGE EXAMPLE
  <PropertyGroup>
    <MyScript><![CDATA[
        function Foo()
        {
            $targetFileName = args[0]
            $targetPdbName = args[1]
            $targetPath = args[2]