Implem/Create.sql

## Create.sql
CREATE DATABASE [TestDB]
GO
USE [TestDB];
CREATE TABLE [dbo].[Images](
    [Id] [bigint] IDENTITY(1,1) NOT NULL,
    [Bin] [image] NOT NULL,
CONSTRAINT [PK_Images] PRIMARY KEY CLUSTERED
(
    [Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

## file5.js
contentType: false,
processData: false,

## file6.js
// dataType: 'json',

## file7.cs
var file = HttpContext.Current.Request.Files[key];
var bin = new byte[file.ContentLength];
file.InputStream.Read(bin, 0, file.ContentLength);
return bin;

## file8.cs
return new FileContentResult(image, "image/jpeg");

## ImageModel.cs
using System.Data;
using System.Data.SqlClient;
using System.Web;
namespace WebApplication1.Models
{
    public class ImageModel
    {
        const string ConnectionString = "Server=tcp:(local),1433;Database=TestDB;Integrated Security=SSPI;";
        public long Id;

        public ImageModel()
        {
        }

        public ImageModel(long id)
        {
            Id = id;
        }

        public byte[] Show()
        {
            var dt = new DataTable();
            var conn = new SqlConnection(ConnectionString);
            var cmd = new SqlCommand("select [Images].[Bin] from [Images] where [Images].[id]=@Id;", conn);
            cmd.Parameters.AddWithValue("@Id", Id);
            var adp = new SqlDataAdapter(cmd);
            adp.Fill(dt);
            return dt.Rows[0][0] as byte[];
        }

        public long Create()
        {
            var conn = new SqlConnection(ConnectionString);
            var cmd = new SqlCommand("insert into [Images]([Images].[Bin]) values(@Bin); select @@identity;", conn);
            cmd.Parameters.AddWithValue("@Bin", File("Images_Bin"));
            conn.Open();
            long.TryParse(cmd.ExecuteScalar().ToString(), out Id);
            conn.Close();
            return Id;
        }

        public static byte[] File(string key)
        {
            var file = HttpContext.Current.Request.Files[key];
            var bin = new byte[file.ContentLength];
            file.InputStream.Read(bin, 0, file.ContentLength);
            return bin;
        }
    }
}

## ImagesController.cs
using System.Web.Mvc;
using WebApplication1.Models;
namespace WebApplication1.Controllers
{
    [AllowAnonymous]
    public class ImagesController : Controller
    {
        [HttpGet]
        public ActionResult Show(long id)
        {
            var image = new ImageModel(id).Show();
            return new FileContentResult(image, "image/jpeg");
        }

        [HttpPost]
        public string Create()
        {
            var id = new ImageModel().Create();
            return id.ToString();
        }
    }
}

## sample.html
<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <script src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-2.1.4.min.js"></script>
    <script src="Scripts/test.js"></script>
    <title></title>
    <meta charset="utf-8" />
</head>
<body>
    <textarea id="Images_Bin" class="upload-image" rows="5" placeholder="ここに画像をペースト"></textarea>
    <div id="results" style="margin-top:10px;"></div>
</body>
</html>

## test.js
$(document).on('paste', '.upload-image', function (e) {
    var items = e.originalEvent.clipboardData.items;
    for (var i = 0 ; i < items.length ; i++) {
        var item = items[i];
        if (item.type.indexOf("image") != -1) {
            var data = new FormData();
            data.append('Images_Bin', item.getAsFile());
            requestFile('/images/create', 'post', data);
        }
    }
});

function requestFile(requestUrl, methodType, data) {
    return $.ajax({
        url: requestUrl,
        type: methodType,
        cache: false,
        contentType: false,
        processData: false,
        data: data,
        success: function (o) {
            $('#results').prepend('<img src="/images/show/' + o + '">');
            return true;
        },
        error: function (xhr, status, err) {
            return false;
        }
    });
};
	CREATE DATABASE [TestDB]
	GO
	USE [TestDB];
	CREATE TABLE [dbo].[Images](
	[Id] [bigint] IDENTITY(1,1) NOT NULL,
	[Bin] [image] NOT NULL,
	CONSTRAINT [PK_Images] PRIMARY KEY CLUSTERED
	(
	[Id] ASC
	)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
	) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
	var file = HttpContext.Current.Request.Files[key];
	var bin = new byte[file.ContentLength];
	file.InputStream.Read(bin, 0, file.ContentLength);
	return bin;
	using System.Data;
	using System.Data.SqlClient;
	using System.Web;
	namespace WebApplication1.Models
	{
	public class ImageModel
	{
	const string ConnectionString = "Server=tcp:(local),1433;Database=TestDB;Integrated Security=SSPI;";
	public long Id;

	public ImageModel()
	{
	}

	public ImageModel(long id)
	{
	Id = id;
	}

	public byte[] Show()
	{
	var dt = new DataTable();
	var conn = new SqlConnection(ConnectionString);
	var cmd = new SqlCommand("select [Images].[Bin] from [Images] where [Images].[id]=@Id;", conn);
	cmd.Parameters.AddWithValue("@Id", Id);
	var adp = new SqlDataAdapter(cmd);
	adp.Fill(dt);
	return dt.Rows[0][0] as byte[];
	}

	public long Create()
	{
	var conn = new SqlConnection(ConnectionString);
	var cmd = new SqlCommand("insert into [Images]([Images].[Bin]) values(@Bin); select @@identity;", conn);
	cmd.Parameters.AddWithValue("@Bin", File("Images_Bin"));
	conn.Open();
	long.TryParse(cmd.ExecuteScalar().ToString(), out Id);
	conn.Close();
	return Id;
	}

	public static byte[] File(string key)
	{
	var file = HttpContext.Current.Request.Files[key];
	var bin = new byte[file.ContentLength];
	file.InputStream.Read(bin, 0, file.ContentLength);
	return bin;
	}
	}
	}
	using System.Web.Mvc;
	using WebApplication1.Models;
	namespace WebApplication1.Controllers
	{
	[AllowAnonymous]
	public class ImagesController : Controller
	{
	[HttpGet]
	public ActionResult Show(long id)
	{
	var image = new ImageModel(id).Show();
	return new FileContentResult(image, "image/jpeg");
	}

	[HttpPost]
	public string Create()
	{
	var id = new ImageModel().Create();
	return id.ToString();
	}
	}
	}
	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
	<script src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-2.1.4.min.js"></script>
	<script src="Scripts/test.js"></script>
	<title></title>
	<meta charset="utf-8" />
	</head>
	<body>
	<textarea id="Images_Bin" class="upload-image" rows="5" placeholder="ここに画像をペースト"></textarea>
	<div id="results" style="margin-top:10px;"></div>
	</body>
	</html>
	$(document).on('paste', '.upload-image', function (e) {
	var items = e.originalEvent.clipboardData.items;
	for (var i = 0 ; i < items.length ; i++) {
	var item = items[i];
	if (item.type.indexOf("image") != -1) {
	var data = new FormData();
	data.append('Images_Bin', item.getAsFile());
	requestFile('/images/create', 'post', data);
	}
	}
	});

	function requestFile(requestUrl, methodType, data) {
	return $.ajax({
	url: requestUrl,
	type: methodType,
	cache: false,
	contentType: false,
	processData: false,
	data: data,
	success: function (o) {
	$('#results').prepend('<img src="/images/show/' + o + '">');
	return true;
	},
	error: function (xhr, status, err) {
	return false;
	}
	});
	};