<asp:TreeView ID="TreeView1" runat="server" DataSourceID="XmlDataSource1">

</asp:TreeView>

<asp:XmlDataSource ID="XmlDataSource1" runat="server"

    DataFile="~/currency.xml"></asp:XmlDataSource>

<asp:TreeView ID="TreeView1" runat="server" DataSourceID="XmlDataSource1">

    <DataBindings>

        <asp:TreeNodeBinding DataMember="NAME" TextField="#InnerText" />

        <asp:TreeNodeBinding DataMember="UNIT" TextField="#InnerText" />

        <asp:TreeNodeBinding DataMember="CURRENCYCODE" TextField="#InnerText" />

        <asp:TreeNodeBinding DataMember="COUNTRY" TextField="#InnerText" />

        <asp:TreeNodeBinding DataMember="RATE" TextField="#InnerText" />

        <asp:TreeNodeBinding DataMember="CHANGE" TextField="#InnerText" />

    </DataBindings>

</asp:TreeView>

string textToSpeak = Console.ReadLine();

SpeechSynthesizer ss = new SpeechSynthesizer();

ss.Speak(textToSpeak);

static void Main(string[] args)

{

}

Environment.CommandLine

string[] arr = Environment.GetCommandLineArgs()

<asp:DropDownList ID="ddl" runat="server">

    <asp:ListItem Text="Select Item"></asp:ListItem>

</asp:DropDownList>

IEnumerable<int> list = Enumerable.Range(0, 10);

ddl.DataSource = list;

ddl.DataBind();

<asp:DropDownList ID="ddl" runat="server" AppendDataBoundItems="true">

    <asp:ListItem Text="Select Item"></asp:ListItem>

</asp:DropDownList>

string path = @"bin\Debug\ConsoleApplication1.exe";

Configuration config = ConfigurationManager.OpenExeConfiguration(path);

var a = config.AppSettings.Settings["MyKey"].Value;

var process = System.Diagnostics.Process.Start("process name", "args");

process.WaitForExit();

string[] names = Enum.GetNames(typeof(MyEnum));

foreach (string item in names)

{

    MyEnum myEnum = (MyEnum)Enum.Parse(typeof(MyEnum), item);

    // logic...

}

MyEnum[] names = typeof(MyEnum).GetNames<MyEnum>();

foreach (MyEnum item in names)

{

    // logic

}

public static T[] GetNames<T>(this Type enumType) where T : struct

{

    string[] names = Enum.GetNames(enumType);

    T[] returnArray = names.Select<string, T>(x => (T)Enum.Parse(enumType, x)).ToArray();

    return returnArray;

}

<object id="UserControl1"

        classid="http://localhost/MyApp/ActiveXControls.dll#ActiveXControls.UserControl1">

    <param name="BorderStyle" value="FixedSingle" />

    <param name="Enabled" value="false" />

</object>

[assembly: ComVisible(true)]

public int Add(int a, int b)

{

    return a + b;

}

function func() {

    var obj = document.getElementById('UserControl1');

    var res = obj.Add(10, 20);

    alert(res);

}

<object id="UserControl1"

    classid="http://localhost/MyWebApp/ActiveXControls.dll#ActiveXControls.UserControl1">

</object>

public class FileLogger : ILogger

{

}

public class MockLogger : ILogger

{

}

public class Person

{

    public ILogger Logger { get; set; }

}

public void Func(Person person)

{

    ILogger original = person.Logger;

    person.Logger = new MockLogger();

    //work.....

    person.Logger = original;

}

using (DisposableProperty<ILogger>.Set(person, new MockLogger()))

{

    // work..

}

public class DisposableProperty<T> : IDisposable where T : class

{

    private T _original;

    private PropertyInfo _property;

    private object _obj;

    private DisposableProperty(object obj, T replaceValue)

    {

        if (obj == null)

            throw new ArgumentNullException();

        this._obj = obj;

        _property = obj.GetType().GetProperties().

                             FirstOrDefault(p => p.PropertyType == typeof(T));

        if (_property == null)

            throw new ArgumentException();

        _original = _property.GetValue(obj, null) as T;

        _property.SetValue(obj, replaceValue, null);

    }

    public void Dispose()

    {

        _property.SetValue(_obj, _original, null);

    }

    public static IDisposable Set(object obj, T replaceValue)

    {

        return new DisposableProperty<T>(obj, replaceValue);

    }

}

HttpCookie cookie = new HttpCookie("ClientColumns");

for (int j = 0; j < cbl.Items.Count; j++)

{

    cookie.Values.Add("name", "value");

}

HttpCookie cookie = new HttpCookie("ClientColumns");

cookie.Value = "value";

function CreateCookie(name, value, expiredays) {

    var expires = '';

    if (expiredays != undefined) {

        var exdate = new Date();

        exdate.setDate(exdate.getDate() + expiredays);

        expires = exdate.toGMTString();

    }

    document.cookie = name + "=" + value + (expires == '' ? '' : ";expires=" + expires) + "; path=/";

}

function ReadCookie(name) {

    var nameEQ = name + "=";

    var ca = document.cookie.split(';');

    for (var i = 0; i < ca.length; i++) {

        var c = ca[i];

        while (c.charAt(0) == ' ') c = c.substring(1, c.length);

        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);

    }

    return null;

}

CreateCookie('name', 'value', 100);

CreateCookie('name', 'value');

CreateCookie('name', 'Id=1&First Name=Shlomo&Work=true');

<asp:CheckBoxList ID="cbl" runat="server" RepeatDirection="Horizontal" onclick="Change(this)">

function Change(tbl) {

    var value = CookieString(tbl);

    CreateCookie("ClientColumns", value, 100);

    ChangeGrid(false);

}

<body onload="ChangeGrid(true)">

function CookieString(tbl) {

    var inputArr = tbl.getElementsByTagName('INPUT');

    var str = '';

    for (var i = 0; i < inputArr.length; i++) {

        str += inputArr[i].nextSibling.innerText + '=' + inputArr[i].checked + '&';

    }

    if (str != '') {

        str = str.substr(0, str.length - 1);

    }

    return str;

}

function ChangeGrid(setCheckBox) {

    var value = ReadCookie('ClientColumns');

    if (value != null) {

        var values = value.split('&');

        var grid = document.getElementById('<%= grid1.ClientID %>');

        var clb = document.getElementById('<%= cbl.ClientID %>');

        var inputs = clb.getElementsByTagName('INPUT');

        for (var m = 0; m < values.length; m++) {

            var display = values[m].split('=')[1] == "true" ? 'block' : 'none';

            for (var i = 0; i < grid.rows.length; i++) {

                grid.rows[i].cells[m].style.display = display;

            }

            if (display == 'none' && setCheckBox) {

                inputs[m].checked = false;

            }

        }

    }

}

var display = values[m].split('=')[1] == "true" ? 'block' : 'none';

<asp:CheckBoxList ID="cbl" runat="server" RepeatDirection="Horizontal">

    <asp:ListItem Text="Id" Selected="True"></asp:ListItem>

    <asp:ListItem Text="First Name" Selected="True"></asp:ListItem>

    <asp:ListItem Text="Last Name" Selected="True"></asp:ListItem>

    <asp:ListItem Text="Age" Selected="True"></asp:ListItem>

    <asp:ListItem Text="Salaty" Selected="True"></asp:ListItem>

    <asp:ListItem Text="Seniority" Selected="True"></asp:ListItem>

</asp:CheckBoxList>

<br />

<asp:GridView ID="grid1" runat="server" OnRowDataBound="grid1_RowDataBound">

</asp:GridView>

<br />

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />

protected void Page_Load(object sender, EventArgs e)

{

    BindGrid();

}

private void BindGrid()

{

    DataTable table = new DataTable();

    table.Columns.Add("Id");

    table.Columns.Add("First Name");

    table.Columns.Add("Last Name");

    table.Columns.Add("Age");

    table.Columns.Add("Salary");

    table.Columns.Add("Seniority");

    table.Rows.Add(1, "Noam", "Gold", 30, 5000, 2.5);

    table.Rows.Add(1, "Pini", "Area", 25, 4500, 1);

    table.Rows.Add(1, "Alon", "Tamari", 20, 7000, 4);

    grid1.DataSource = table;

    grid1.DataBind();

}

protected void grid1_RowDataBound(object sender, GridViewRowEventArgs e)

{

    for (int j = 0; j < cbl.Items.Count; j++)

    {

        e.Row.Cells[j].Visible = cbl.Items[j].Selected;

    }

}

protected void Button1_Click(object sender, EventArgs e)

{

    HttpCookie cookie = new HttpCookie("ClientColumns");

    for (int j = 0; j < cbl.Items.Count; j++)

    {

        cookie.Values.Add(cbl.Items[j].Value, cbl.Items[j].Selected.ToString());

    }

    cookie.Expires = DateTime.Now.AddYears(1);

    Response.Cookies.Add(cookie);

}

if (!IsPostBack)

{

    HttpCookie cookie = Request.Cookies["ClientColumns"];

    if (cookie != null)

    {

        foreach (string item in cookie.Values.Keys)

        {

            ListItem li = cbl.Items.FindByValue(item);

            li.Selected = bool.Parse(cookie.Values[item]);

        }

    }

}

Uri uri = new Uri(item.RssUrl);

RssChannel myRssChannel = new RssChannel(uri);

RssItem item = myRssChannel.Items[0];

Pres.Slides[1].Shapes[1].TextFrame.TextRange.Text = item.Title;

Pres.Slides[1].Shapes[2].TextFrame.TextRange.Text = item.Description;

public static class InsertHtml

{

    public static void InsertHtmlToShape(Shape shape, string html)

    {

        // Copy the HTML to clipboard (Pay attention,

        // no <HTML> nor <BODY> tags are needed here                   

        CopyHtmlToClipBoard(html);

        // Paste the HTML into the shape

        shape.TextFrame.TextRange.Paste();

    }

    private static void CopyHtmlToClipBoard(string html)

    {

        Encoding enc = Encoding.UTF8;

        string begin = "Version:0.9\r\nStartHTML:{0:000000}\r\nEndHTML:{1:000000}"

           + "\r\nStartFragment:{2:000000}\r\nEndFragment:{3:000000}\r\n";

        string html_begin = "<html>\r\n<head>\r\n"

           + "<meta http-equiv=\"Content-Type\""

           + " content=\"text/html; charset=" + enc.WebName + "\">\r\n"

           + "<title>HTML clipboard</title>\r\n</head>\r\n<body>\r\n"

           + "<!--StartFragment-->\r\n";

        string html_end = "\r\n<!--EndFragment-->\r\n</body>\r\n</html>\r\n";

        string begin_sample = String.Format(begin, 0, 0, 0, 0);

        int count_begin = enc.GetByteCount(begin_sample);

        int count_html_begin = enc.GetByteCount(html_begin);

        int count_html = enc.GetByteCount(html);

        int count_html_end = enc.GetByteCount(html_end);

        string html_total = String.Format(

           begin

           , count_begin

           , count_begin + count_html_begin + count_html + count_html_end

           , count_begin + count_html_begin

           , count_begin + count_html_begin + count_html

           ) + html_begin + html + html_end;

        DataObject obj = new DataObject();

        obj.SetData(DataFormats.Html, new MemoryStream(enc.GetBytes(html_total)));

        Clipboard.SetDataObject(obj, true);

    }

}

shape.TextFrame.TextRange.Text = shape.TextFrame.TextRange.Text.Remove(500)

shape.TextFrame.TextRange.Characters(500, shape.TextFrame.TextRange.Text.Length).Delete();

shape.TextFrame.TextRange.InsertAfter("...");