Multiple File Upload Browser Control in Asp.Net 2.0

C# code

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
         if (Page.IsPostBack == true)
        {
             AddRows();
         }
    }

    private void AddRows()
    {
         try
        {
             if (hidCurRow.Value != "" && hidCurRow.Value != "0")
            {
                 DecreaseCount();
             }
             else if(hidCurRow.Value == "")
            {
                 IncreaseCount();
             }

             for (int count = 1; count < tblMin.Rows.Count; count++)
             {
                 tblMin.Rows.RemoveAt(1);
            }

            int maxRows = Convert.ToInt32(hidMax.Value);
             string[] arrRows = hidRow.Value.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
             for (int count = 1; count <= maxRows; count++)
            {
                Boolean isAdd = false;
                 for (int incount = 0; incount < arrRows.Length; incount++)
                 {
                     if (arrRows[incount] == count.ToString())
                    {
                        isAdd = true;
                         break;
                     }
                 }

                 if (isAdd == true)
                {
                    TableRow tr = new TableRow();

                    TableCell tcfu = new TableCell();
                    FileUpload fup = new FileUpload();
                    fup.ID = "fu" + count.ToString();
                    tcfu.Controls.Add(fup);

                    TableCell tcbtn = new TableCell();
                    Button bt = new Button();
                    bt.ID = "btn" + count.ToString();
                    bt.Text = "Remove";
                     bt.Attributes.Add("onclick", "DecreaseRow('" + count.ToString() + "');");
                     tcbtn.Controls.Add(bt);


                     tr.Cells.Add(tcfu);
                      tr.Cells.Add(tcbtn);

                      tblMin.Rows.Add(tr);
                 }
             }
         }
         catch
        {

         }
    }

    private void IncreaseCount()
    {
         string strVal = hidMax.Value;
        if (strVal != "")
        {
             int iMax = Convert.ToInt32(strVal);
            iMax = iMax + 1;
            hidMax.Value = iMax.ToString();

             if (hidRow.Value != "")
            {
                hidRow.Value = hidRow.Value + "," + iMax.ToString();
             }
             else
            {
                hidRow.Value = iMax.ToString();
             }
        }
    }

    private void DecreaseCount()
    {
         string strCurRow = hidCurRow.Value;
        string[] arrRows = hidRow.Value.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
        hidRow.Value = "";
        for (int count = 0; count < arrRows.Length; count++)
         {
             if (arrRows[count] != strCurRow)
             {
                 if (hidRow.Value == "")
                {
                    hidRow.Value = arrRows[count];
                 }
                 else
                {
                    hidRow.Value = hidRow.Value + "," + arrRows[count];
                 }
             }
         }
    }

     protected void btnAdd_Click(object sender, EventArgs e)
    {

     }

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
         if (hidRow.Value != "")
        {
             string[] strVal = hidRow.Value.Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
             for (int count = 0; count < strVal.Length; count++)
            {
                FileUpload fup = new FileUpload();
                fup = (FileUpload)tblMin.FindControl("fu" + strVal[count]);
                 if (fup != null)
                 {
                     if (fup.PostedFile != null && fup.FileName != "")
                     {
                          //your code here
                     }
                 }
             }
         }
    }
}





ASPX

 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript" language="javascript">
       
        //set current row no to delete        function DecreaseRow(rowNo)
        {
            var hid = document.getElementById('<%= hidCurRow.ClientID %>');
            hid.value = rowNo;

        }
         
         //clear the delete row hiddent file to show that its insert
function IncreseRows()
        {
            var hid = document.getElementById('<%= hidCurRow.ClientID %>');
            hid.value = "";

        }
         
        //Set zero for Submit 
        function SetZero()
        {
            var hid = document.getElementById('<%= hidCurRow.ClientID %>');
            hid.value = "0";
        }
    </script>
</head>
<body>
    
    <form id="form1" runat="server">
        <asp:Table ID="tblMin" runat="server">
            <asp:TableHeaderRow>
                <asp:TableHeaderCell>
                        File
                </asp:TableHeaderCell>
                <asp:TableHeaderCell>
                        Remove
                </asp:TableHeaderCell>
            </asp:TableHeaderRow>
            <asp:TableRow>
                <asp:TableCell>
                    <asp:FileUpload ID="fu1" runat="server" />
                </asp:TableCell>
                <asp:TableHeaderCell>
                    <asp:Button ID="btn1" runat="server" Text="Remove" OnClientClick="return DecreaseRow('1');" />
                </asp:TableHeaderCell>
            </asp:TableRow>
        </asp:Table>
        <asp:Button ID="btnAdd" runat="server" OnClick="btnAdd_Click" Text="Add" OnClientClick="return IncreseRows();" />
        <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" OnClientClick="SetZero();"/><br />
        <asp:HiddenField ID="hidMax" runat="server" value="1"/>
        <asp:HiddenField ID="hidRow" runat="server" value="1"/>
        <asp:HiddenField ID="hidCurRow" runat="server"/>
    </form>
</body>
</html>