public enum UserGender

{

    Male,

    Female

}

public partial class User

{

    public UserGender Gender

    {

        get

        {

            return (UserGender)this.InternalGender;

        }

        set

        {

            InternalGender = (int)value;

        }

    }

}

<Schema Namespace="EFLabModel.Store"

        Alias="Self"

        Provider="System.Data.SqlClient"

        ProviderManifestToken="2005"

        xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator"

        xmlns="http://schemas.microsoft.com/ado/2006/04/edm/ssdl">

<EntitySet Name="User" EntityType="Self.User" store:Type="Tables" Schema="dbo" />

<EntityContainer Name="EFLabModelStoreContainer">

  <EntitySet Name="User" EntityType="EFLabModel.Store.User" store:Type="Tables" Schema="dbo" />

</EntityContainer>

<EntityType Name="User">

  <Key>

    <PropertyRef Name="Id" />

  </Key>

  <Property Name="Id" Type="bigint" Nullable="false" StoreGeneratedPattern="Identity" />

  <Property Name="Name" Type="nvarchar" Nullable="false" MaxLength="50" />

  <Property Name="PenName" Type="nvarchar" MaxLength="50" />

  <Property Name="Picture" Type="image" />

  <Property Name="Email" Type="varchar" Nullable="false" MaxLength="50" />

  <Property Name="Gender" Type="int" Nullable="false" />

</EntityType>

<Schema Namespace="EFLabModel" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">

<EntityContainer Name="EFLabEntities1">

<EntitySet Name="User" EntityType="EFLabModel.User" />

<EntityType Name="User">

  <Key>

    <PropertyRef Name="Id" />

  </Key>

  <Property Name="Id" Type="Int64" Nullable="false" />

  <Property Name="Name" Type="String" Nullable="false" MaxLength="50" Unicode="true"

            FixedLength="false" />

  <Property Name="PenName" Type="String" MaxLength="50" Unicode="true"

            FixedLength="false" />

  <Property Name="Picture" Type="Binary" MaxLength="Max" FixedLength="false" />

  <Property Name="Email" Type="String" Nullable="false" MaxLength="50" Unicode="false"

            FixedLength="false" />

  <Property Name="InternalGender" Type="Int32" Nullable="false"

            a:GetterAccess="Private"

            a:SetterAccess="Private"

            xmlns:a="http://schemas.microsoft.com/ado/2006/04/codegeneration" />

</EntityType>

<!-- SSDL content -->

<edmx:StorageModels>

  <Schema Namespace="EFLabModel.Store"

          Alias="Self"

          Provider="System.Data.SqlClient"

          ProviderManifestToken="2005"

          xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator"

          xmlns="http://schemas.microsoft.com/ado/2006/04/edm/ssdl">

    <EntityContainer Name="EFLabModelStoreContainer">

      <EntitySet Name="User" EntityType="EFLabModel.Store.User" store:Type="Tables" Schema="dbo" />

    </EntityContainer>

    <EntityType Name="User">

      <Key>

        <PropertyRef Name="Id" />

      </Key>

      <Property Name="Id" Type="bigint" Nullable="false" StoreGeneratedPattern="Identity" />

      <Property Name="Name" Type="nvarchar" Nullable="false" MaxLength="50" />

      <Property Name="PenName" Type="nvarchar" MaxLength="50" />

      <Property Name="Picture" Type="image" />

      <Property Name="Email" Type="varchar" Nullable="false" MaxLength="50" />

      <Property Name="Gender" Type="int" Nullable="false" />

    </EntityType>

  </Schema>

</edmx:StorageModels>

<!-- CSDL content -->

<edmx:ConceptualModels>

  <Schema Namespace="EFLabModel" Alias="Self" xmlns="http://schemas.microsoft.com/ado/2006/04/edm">

    <EntityContainer Name="EFLabEntities1">

      <EntitySet Name="User" EntityType="EFLabModel.User" />

    </EntityContainer>

    <EntityType Name="User">

      <Key>

        <PropertyRef Name="Id" />

      </Key>

      <Property Name="Id" Type="Int64" Nullable="false" />

      <Property Name="Name" Type="String" Nullable="false" MaxLength="50" Unicode="true"

                FixedLength="false" />

      <Property Name="PenName" Type="String" MaxLength="50" Unicode="true"

                FixedLength="false" />

      <Property Name="Picture" Type="Binary" MaxLength="Max" FixedLength="false" />

      <Property Name="Email" Type="String" Nullable="false" MaxLength="50" Unicode="false"

                FixedLength="false" />

      <Property Name="InternalGender" Type="Int32" Nullable="false"

                a:GetterAccess="Private"

                a:SetterAccess="Private"

                xmlns:a="http://schemas.microsoft.com/ado/2006/04/codegeneration" />

    </EntityType>

  </Schema>

</edmx:ConceptualModels>

<EntityTypeMapping TypeName="EFLabModel.User">

<!-- SSDL content -->

<edmx:StorageModels>

  <Schema Namespace="EFModel.Store" Alias="Self"

          Provider="System.Data.SqlClient"

          ProviderManifestToken="2005"

          xmlns:store="http://schemas.microsoft.com/ado/2007/12/edm/EntityStoreSchemaGenerator"

          xmlns="http://schemas.microsoft.com/ado/2006/04/edm/ssdl">

    <EntityContainer Name="EFModelStoreContainer">

      <EntitySet Name="User" EntityType="EFModel.Store.User" store:Type="Tables" Schema="dbo" />

    </EntityContainer>

    <EntityType Name="User">

      <Key>

        <PropertyRef Name="Id" />

      </Key>

      <Property Name="Id" Type="bigint" Nullable="false" StoreGeneratedPattern="Identity" />

      <Property Name="Name" Type="nvarchar" Nullable="false" MaxLength="50" />

      <Property Name="PenName" Type="nvarchar" MaxLength="50" />

      <Property Name="Picture" Type="image" />

      <Property Name="Email" Type="varchar" Nullable="false" MaxLength="50" />

      <Property Name="Gender" Type="int" Nullable="false" />

    </EntityType>

  </Schema>

</edmx:StorageModels>

public enum UserGender

{

    Male,

    Female

}

public partial class User

{

    public UserGender Gender

    {

        get

        {

            return (UserGender)this.InternalGender;

        }

        set

        {

            InternalGender = (int)value;

        }

    }

}

public partial class NorthwindEntities : ObjectContext

{

    public NorthwindEntities() :

            base("name=NorthwindEntities", "NorthwindEntities")

    {

        this.OnContextCreated();

    }

    public NorthwindEntities(string connectionString) :

            base(connectionString, "NorthwindEntities")

    {

        this.OnContextCreated();

    }

    public NorthwindEntities(EntityConnection connection) :

            base(connection, "NorthwindEntities")

    {

        this.OnContextCreated();

    }

    partial void OnContextCreated();

}

<asp:RequiredFieldValidator ID="rfv" ValidationGroup="group1"

runat="server" ControlToValidate="fu" Text="*"></asp:RequiredFieldValidator>

function CheckIds() {

    var btnId = '<%= btn.ClientID %>';

    var option = new WebForm_PostBackOptions(btnId, "", true, "group1", "", false, true);

    if (Page_ClientValidate(option.validationGroup)) {

        var users = GetAllSelectedUsers();

        var returnValue = window.showModalDialog('MyPopupPage.aspx?users=' + users);

        if (returnValue) {

            WebForm_DoPostBackWithOptions(option);

        }

    }

    return false;

}

    1 <asp:FileUpload ID="fu" runat="server" />

    2 

    3 <asp:CheckBoxList ID="chkUsers" runat="server">

    4     <asp:ListItem Text="Shlomo" Value="Shlomo"></asp:ListItem>

    5     <asp:ListItem Text="Noam" Value="Noam"></asp:ListItem>

    6     <asp:ListItem Text="Yossi" Value="Yossi"></asp:ListItem>

    7     <asp:ListItem Text="Tom" Value="Tom"></asp:ListItem>

    8     <asp:ListItem Text="Ido" Value="Ido"></asp:ListItem>

    9 </asp:CheckBoxList>

   10 

   11 <asp:Button ID="btn" runat="server" Text="Submit"

   12     OnClientClick="return CheckIds()" OnClick="btn_OnClick" />

function CheckIds() {

    var users = GetAllSelectedUsers();

    return window.showModalDialog('MyPopupPage.aspx?users=' + users);

}

<asp:GridView ID="grd" runat="server" AutoGenerateColumns="false">

    <Columns>

        <asp:BoundField DataField="Name" HeaderText="Name" />

        <asp:TemplateField>

            <ItemTemplate>

                <asp:TextBox ID="txtID" runat="server"></asp:TextBox>

                <asp:RequiredFieldValidator ID="rfv" runat="server"

                        ControlToValidate="txtID" ErrorMessage="*">

                </asp:RequiredFieldValidator>

            </ItemTemplate>

        </asp:TemplateField>

    </Columns>

</asp:GridView>

<asp:Button ID="btnOk" runat="server" Text="OK" OnClick="btnOk_OnClick" />

<input type="button" value="Cancel" onclick="window.returnValue = false; window.close();" />

<base target="_self" />

protected void Page_Load(object sender, EventArgs e)

{

    if (!IsPostBack)

    {

        DataTable table = new DataTable();

        table.Columns.Add("Name");

        table.Columns.Add("Id");

        table.PrimaryKey = new DataColumn[] { table.Columns["Id"] };

        if (Request["users"].Contains("Shlomo"))

            table.Rows.Add("Shlomo", "1");

        if (Request["users"].Contains("Noam"))

            table.Rows.Add("Noam", "2");

        if (Request["users"].Contains("Yossi"))

            table.Rows.Add("Yossi", "3");

        if (Request["users"].Contains("Tom"))

            table.Rows.Add("Tom", "4");

        if (Request["users"].Contains("Ido"))

            table.Rows.Add("Ido", "5");

        Session["table"] = table;

        grd.DataSource = table;

        grd.DataBind();

    }

}

protected void btnOk_OnClick(object sender, EventArgs e)

{

    DataTable table = (DataTable)Session["table"];

    for (int i = 0; i < grd.Rows.Count; i++)

    {

        string name = grd.Rows[i].Cells[0].Text;

        string id = ((TextBox)grd.Rows[i].FindControl("txtID")).Text;

        DataRow row = table.Rows.Find(id);

        if (row == null || row["Name"].ToString() != name)

        {

            string msg = string.Format("id {0} is not valid for {1}", id, name);

            Page.ClientScript.RegisterClientScriptBlock(GetType(), "aaa", "alert('" + msg + "')", true);

            return;

        }

    }

    string script = "window.returnValue = true; window.close();";

    Page.ClientScript.RegisterClientScriptBlock(GetType(), "key", script, true);

}

int[] intArr = { 2, 4, 7, 8, 6 };

int i = intArr[2];

Array arr = GetArray();

IList list = arr;

Console.WriteLine(list[2]);

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs"

    Inherits="WebApplication32.WebUserControl1" %>

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

public event EventHandler ButtonOnClick

{

    add

    {

        Button1.Click += value;

    }

    remove

    {

        Button1.Click -= value;

    }

}

<div>

    <uc1:WebUserControl1 ID="WebUserControl11" runat="server"

        OnButtonOnClick="ButtonOnClick_Click" />

</div>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>

<asp:Button ID="Button1" runat="server" Text="Button" ValidationGroup="dates" />

<asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="CompareValidator"

    ControlToCompare="TextBox2" ControlToValidate="TextBox1" Operator="GreaterThan"

    Type="Date" ValidationGroup="dates"></asp:CompareValidator>

<asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="CompareValidator"

    ControlToCompare="TextBox2" ControlToValidate="TextBox1" Operator="GreaterThan" IsDateTime="true"

    Type="Date" ValidationGroup="dates"></asp:CompareValidator>

<cc1:DateTimeValidator ID="CompareValidator1" runat="server" ErrorMessage="CompareValidator"

    ControlToCompare="TextBox2" ControlToValidate="TextBox1" Operator="GreaterThan"

    IsDateTime="true" Type="Date" ValidationGroup="dates"></cc1:DateTimeValidator>

<%@ Register Assembly="[Assembly]" Namespace="[Namesapce]" TagPrefix="cc1" %>

<script type="text/javascript">

    var OriginalValidatorCompare;

    function ChangeValidatorCompare() {

        if (typeof (ValidatorCompare) == "function") {

            OriginalValidatorCompare = ValidatorCompare;

            ValidatorCompare = function(operand1, operand2, operator, val) {

                if (val.IsDateTime == undefined || val.IsDateTime.toLowerCase() != "true") {

                    return OriginalValidatorCompare(operand1, operand2, operator, val);

                }

                var result = OriginalValidatorCompare(operand1.substr(0, operand1.indexOf(' ', 0)),

                                                      operand2.substr(0, operand2.indexOf(' ', 0)),

                                                      operator, val);

                if (result == false) {

                    return result;

                }

                var op1, op2;

                var hour1 = operand1.substring(11, 13);

                var minuts1 = operand1.substring(14, 16);

                var secound1 = operand1.substring(17, 19);

                var hour2 = operand2.substring(11, 13);

                var minuts2 = operand2.substring(14, 16);

                var secound2 = operand2.substring(17, 19);

                op1 = new Date(0, 0, 0, hour1, minuts1, secound1);

                op2 = new Date(0, 0, 0, hour2, minuts2, secound2);

                switch (operator) {

                    case "NotEqual":

                        return (op1 != op2);

                    case "GreaterThan":

                        return (op1 > op2);

                    case "GreaterThanEqual":

                        return (op1 >= op2);

                    case "LessThan":

                        return (op1 < op2);

                    case "LessThanEqual":

                        return (op1 <= op2);

                    default:

                        return (op1 == op2);

                }

            }

        }

    }

</script>

var result = OriginalValidatorCompare(operand1.substr(0, operand1.indexOf(' ', 0)),

                                      operand2.substr(0, operand2.indexOf(' ', 0)),

                                      operator, val);

var hour1 = operand1.substring(11, 13);

var minuts1 = operand1.substring(14, 16);

var secound1 = operand1.substring(17, 19);

var hour2 = operand2.substring(11, 13);

var minuts2 = operand2.substring(14, 16);

var secound2 = operand2.substring(17, 19);

op1 = new Date(0, 0, 0, hour1, minuts1, secound1);

op2 = new Date(0, 0, 0, hour2, minuts2, secound2);

switch (operator) {

    case "NotEqual":

        return (op1 != op2);

    case "GreaterThan":

        return (op1 > op2);

    case "GreaterThanEqual":

        return (op1 >= op2);

    case "LessThan":

        return (op1 < op2);

    case "LessThanEqual":

        return (op1 <= op2);

    default:

        return (op1 == op2);

}

public class DateTimeValidator : CompareValidator

{

    public bool IsDateTime { get; set; }

    protected override bool EvaluateIsValid()

    {

        if (!IsDateTime)

        {

            return base.EvaluateIsValid();

        }

        DateTime op1 = DateTime.Parse(((TextBox)FindControl(ControlToValidate)).Text);

        DateTime op2 = DateTime.Parse(((TextBox)FindControl(ControlToCompare)).Text);

        switch (Operator)

        {

            case ValidationCompareOperator.Equal:

                return op1 == op2;

            case ValidationCompareOperator.GreaterThan:

                return op1 > op2;

            case ValidationCompareOperator.GreaterThanEqual:

                return op1 >= op2;

            case ValidationCompareOperator.LessThan:

                return op1 < op2;

            case ValidationCompareOperator.LessThanEqual:

                return op1 <= op2;

            case ValidationCompareOperator.NotEqual:

                return op1 != op2;

            default:

                return op1 == op2;

        }

    }

    protected override void AddAttributesToRender(HtmlTextWriter writer)

    {

        writer.AddAttribute("IsDateTime", IsDateTime.ToString());

        base.AddAttributesToRender(writer);

    }

}

public void ProcessRequest(HttpContext context)

{

    string fileName = context.Request.QueryString["filename"];

    FileInfo fi = new FileInfo(fileName);

    context.Response.ContentType = "application/x-rar-compressed";

    context.Response.AppendHeader("Content-Disposition",

        string.Format("attachment; filename=download{0}", fi.Name));

    context.Response.WriteFile(fileName);

    context.Response.End();

}

<a href="MyHandler.ashx?filename=C:\MyFile.rar">Download</a>