How to restrict the number of files and restrict size of file for a single upload using Asp.Net C#

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Restrict the number of files and restrict size of file for a single upload 

Image or Files upload  multiple file for single click.Rrestrict the number of files and restrict the size of file using in asp.net c#.

                                   DEMO 

                            

                             Download
                       
                        HTML CODING
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Multiple image upload and Restrict file size using Asp.Net C#</title>
</head>
<body>
    <form id="form1" runat="server">
    <div align="center">
        <br />
        <asp:FileUpload ID="FileUpload1" AllowMultiple="True" runat="server" />
        <br />
        <asp:Button ID="Button1" runat="server" Text="Upload" OnClick="Button1_Click" />
    </div>
    </form>
</body>
</html>

                                                              C# CODING

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.IO;

public partial class ImageUpload : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["dbcon"].ToString());
        con.Open();
        HttpFileCollection hfcc = Request.Files;

        if (hfcc.Count != 0)   //
        {
            // Allow Only 2 Images
            if (hfcc.Count <= 2)
            {
                if (FileUpload1.PostedFile.ContentLength < 1048576)            // Allow Size upto 1MB
                {
                    HttpFileCollection hfc = Request.Files;
                    for (int i = 0; i < hfc.Count; i++)
                    {
                        HttpPostedFile hpf = hfc[i];
                        if (hpf.ContentLength > 0)
                        {
                            hpf.SaveAs(Server.MapPath("Image") + "\\" + Path.GetFileName(hpf.FileName));
                          
   SqlCommand cmd = new SqlCommand("insert into Reg(imagename,imgpath) values ('" +hpf.FileName+ "','" +"Image/"+hpf.FileName  + "')", con);
                            cmd.ExecuteNonQuery();
                        }
                       
                    }
                    con.Close();
                    Response.Write("<script>alert('Data Registered')</script>");                   
                }
                else
                {
                    Response.Write("<script>alert('Maximum File Size 1MB')</script>");
                }
            }
            else
            {
                Response.Write("<script>alert('Allowed only 2 Images')</script>");
            }
        }
        else
        {
            Response.Write("<script>alert('Minimum One Images Upload')</script>");
        }

    }
}

                               Web.Config


<?xml version="1.0"?>


<configuration>

    <connectionStrings>
    
        <add name="dbcon" connectionString="Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True"
            providerName="System.Data.SqlClient" />
    </connectionStrings>
 
          
    <system.web>

      <httpRuntime maxRequestLength="1048576"/>

    </system.web>

</configuration>


Add New Webform -  Add FileUpload Control from Toolbox - Add AllowMultiple=True





Next - Add Namespace System.IO  and get  requested length from upload file then check by if condition





Next - Add Web.Config maxRequestLength = 1 MB






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