How Auto poastbak in ie 10 Enternet exploer 10 in .net

private void Page_Init(object sender, EventArgs e)
    {
        Page.ClientTarget = "uplevel";
    }

Url Rewite

protected void Application_BeginRequest(Object sender, EventArgs e)
    {

 if (HttpContext.Current.Request.QueryString["isValid"] == null)
                {
                    if (HttpContext.Current.Request.UrlReferrer == null && HttpContext.Current.Request.QueryString.Count > 0 && !(HttpContext.Current.Request.Url.ToString().ToLower().Contains("fundpage.aspx")))
                    {
                        if (!HttpContext.Current.Request.Url.ToString().Contains("?2") && !HttpContext.Current.Request.Url.ToString().ToLower().Contains("?formcentre"))
                        {
                            Response.Redirect("~/errorpage.aspx");
                        }

                    }
                    else
                    {
                        // BusinessLogic.URLRewriter.ProcessRequest();
                        URLRewriterNew.URLRewriterNew.ProcessRequest();
                        URLTagRewriter.ProcessRequest();
                    }
                }
                else if (HttpContext.Current.Request.UrlReferrer == null)
                {
                    //Response.Redirect("~/default.aspx");
                }
}


=========================================================
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Web;
using System.Data.SqlClient;
using System.Data;

using System.Xml;

public class URLTagRewriter : IConfigurationSectionHandler
{

    #region Private Variables
    // static AccessData _accessData = new AccessData();
    #endregion
    public static void ProcessRequest()
    {

        //string zSubst = oRewriter.GetSubstitution(HttpContext.Current.Request.Path);

        //Added by Deepak T to check the keyword

        if (HttpContext.Current.Request.Path.ToLower().Contains("aspx"))
        {
            //do nothing
            string zSubst = string.Empty;
            if (HttpContext.Current.Request.Url.AbsoluteUri.ToString().ToLower().Contains("?ptagid="))
            {
                string strPid = HttpContext.Current.Request.QueryString["ptagid"].ToString();
                int id = int.Parse(strPid);
                zSubst = ReadURLFromSql(id.ToString());
                if (zSubst.Length > 0)
                {
                    if (HttpContext.Current.Request.RequestType != "POST")
                    {
                        HttpContext.Current.Response.Redirect(zSubst);
                        //HttpContext.Current.RewritePath(zSubst);
                    }
                }

            }
            else
            {
                //HttpContext.Current.Response.Redirect("~/default.aspx");
            }

        }
        else if (HttpContext.Current.Request.Path.ToLower().Contains("."))
        {
            //do nothing
        }
        else
        {
            string zSubst = string.Empty;
            string strPid ="";
            zSubst = ReadURLFromSql();//ReadXML(HttpContext.Current.Server.MapPath("~/URL.xml"));

            if (zSubst.Length > 0)
            {
                HttpContext.Current.RewritePath(zSubst);
            }
            else
            {
                //HttpContext.Current.Response.Redirect("~/default.aspx");
                // throw new Exception("Page not found");
            }
        }
    }

    public static string ReadURLFromSql()
    {
        string strRequestPath = string.Empty;
        string dbPath = string.Empty;
        string strMatchPath = string.Empty;
        strRequestPath = HttpContext.Current.Request.Path; // got the requested path
        strMatchPath = strRequestPath.Substring(strRequestPath.LastIndexOf("/"), strRequestPath.Length - (strRequestPath.LastIndexOf("/")));
        if (strMatchPath.Contains("/"))
        {
            strMatchPath = strMatchPath.Remove(strMatchPath.IndexOf("/"), 1);
        }

        if (strMatchPath.Contains("'"))
        {
            int index = strMatchPath.IndexOf("'");
            index = index + 1;
            strMatchPath = strMatchPath.Insert(index, "'");
        }
        else
        {
            // strMatchPath = "7";
        }


        DataSet dsURL = new DataSet();


        //dsURL = GetFundPageLink("GetFundPageIDByLink","", strMatchPath);




        //if (dsURL != null && dsURL.Tables.Count > 0 && dsURL.Tables[0].Rows.Count > 0)
        //{
        //    dbPath = dsURL.Tables[0].Rows[0]["ID"].ToString();
      //  string strPid = HttpContext.Current.Request.QueryString["tagid"].ToString();
       //}
        //else
        //{
        //    dbPath = "";
        //}
  
        if (strMatchPath == "equity-funds")
        {
            dbPath = "1";
        }
        else if (strMatchPath == "debt-funds")
        {
            dbPath = "2";
        }
        else if (strMatchPath == "hybrid-funds")
        {
            dbPath = "3";
        }
        else if (strMatchPath == "tax-saving-funds")
        {
            dbPath = "7";
        }
        else if (strMatchPath == "long-term-funds")
        {
            dbPath = "18";
        } else
        {
            dbPath = "";
        }

        string str = string.Empty;
        if (dbPath != "")
            str = "~/mutual-funds-at-a-glance.aspx?tagID=" + dbPath + "";
        else
            str = "";

        return str;
    }

    public static string ReadURLFromSql(string fundID)
    {
        string strRequestPath = string.Empty;
        string dbPath = string.Empty;
        string strMatchPath = string.Empty;
        strRequestPath = HttpContext.Current.Request.Path; // got the requested path


        DataSet dsURL = new DataSet();

        //dsURL = GetFundPageLink("GetFundPageLink", fundID,"");

        if (fundID == "1")
        {
            dbPath = "equity-funds";
        }
        else if (fundID == "2")
        {
            dbPath = "debt-funds";
        }
        else if (fundID == "3")
        {
            dbPath = "hybrid-funds";
        }
        else if (fundID == "7")
        {
            dbPath = "tax-saving-funds";
        }
         else if (fundID == "18")
        {
            dbPath = "long-term-funds";
        }


        //if (dsURL!=null && dsURL.Tables.Count>0 &&  dsURL.Tables[0].Rows.Count > 0)
        //{
        //dbPath = "pramod";// dsURL.Tables[0].Rows[0]["FundPageLink"].ToString();
        // }

        string str = string.Empty;
        if (dbPath != "")
            str = "~/" + dbPath;
        else
            str = "";

        return str;
    }


    //public static DataSet GetFundPageLink(string strAction, string strFundID,string strFundLink)
    //{
    //    try
    //    {

    //        _accessData.Section = "FundPageLinks";
    //        object[] obj = _accessData.GetObject();
    //        obj[0] = strAction;
    //        obj[1] = strFundID;
    //        obj[2] = strFundLink;

    //        DataSet _ds = _accessData.getDataSet(obj);
    //        return _ds;
    //    }
    //    catch (Exception ex)
    //    {
    //        throw (ex);
    //    }
    //}



    #region Implementation of IConfigurationSectionHandler
    public object Create(object parent, object configContext, XmlNode section)
    {
        //_oRules = section;

        // TODO: Compile all Regular Expressions

        return this;
    }

    #endregion

}

More pageing in .net use ListView with DataPager

 =============================ASPX page==================================
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="listview_paging.aspx.cs"
    Inherits="listview_paging" %>

<!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></title>
</head>
<body>
    <form id="form1" runat="server">
    <div class="StatusMessage">
        <asp:ListView ID="lvEmployee" runat="server" OnDataBound="lvEmployee_DataBound">
            <LayoutTemplate>
                <table id="itemPlaceholderContainer">
                    <tr runat="server" id="itemPlaceholder">
                    </tr>
                </table>
            </LayoutTemplate>
            <ItemTemplate>
                <tr>
                    <td>
                        Address:<asp:Label ID="AddressLabel" runat="server" Text='<%# Eval("Id") %>' />
                    </td>
                </tr>
            </ItemTemplate>
        </asp:ListView>
        <div id="divpaging" runat="server">
            <asp:DataPager ID="DataPager1" runat="server" PagedControlID="lvEmployee" PageSize="2"
                OnPreRender="DataPager1_PreRender">
                <Fields>
                   <%-- <asp:NumericPagerField ButtonCount="5" />--%>
                    <asp:NextPreviousPagerField ShowFirstPageButton="true" ShowLastPageButton="true"
                        ShowNextPageButton="true" ShowPreviousPageButton="true" />
                    <asp:TemplatePagerField OnPagerCommand="listPages_Click">
                        <PagerTemplate>
                            <asp:Button ID="listPages" runat="server" Text="more"></asp:Button>
                        </PagerTemplate>
                    </asp:TemplatePagerField>
                </Fields>
            </asp:DataPager>
        </div>
    </div>
    </form>
</body>
</html>

===============================cs pages===================================
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class listview_paging : System.Web.UI.Page
{

        int CurrentPage = 2;

        public int PageNumber
        {
            get
            {
                if (ViewState["PageNumber"] != null)
                    return Convert.ToInt32(ViewState["PageNumber"]);
                else
                    return 0;
            }
            set
            {
                ViewState["PageNumber"] = value;

            }
        }

        protected void Page_Load(object sender, EventArgs e)
        {

            if (!IsPostBack)
            {
                PageNumber = 1;
                ProductList db = new ProductList();
                lvEmployee.DataSource = db.GellAll();
                lvEmployee.DataBind();

            }

        }



        protected void lvEmployee_DataBound(object sender, EventArgs e)
        {


            //DropDownList ddl = DataPager1.Controls[1].FindControl("ddlPage") as DropDownList;

            int PageCount = (DataPager1.TotalRowCount / 2);

            if (PageCount * 2 != DataPager1.TotalRowCount)
            {

                PageCount = PageCount + 1;

            }

            //for (int i = 0; i < PageCount; i++)
            //{

            //    ddl.Items.Add(new ListItem((i + 1).ToString(), (1 + i).ToString()));

            //}

            // ddl.Items.FindByValue(CurrentPage.ToString()).Selected = true;

        }

        //protected void ddlPage_SelectedIndexChanged(object sender, EventArgs e)
        //{

        //    DropDownList ddl = sender as DropDownList;

        //    CurrentPage = int.Parse(ddl.SelectedValue);

        //    int PageSize = 2 * CurrentPage;

        //    DataPager1.SetPageProperties(0, PageSize, true);

        //}

        protected void DataPager1_PreRender(object sender, EventArgs e)
        {

            ProductList db = new ProductList();
            lvEmployee.DataSource = db.GellAll();
            lvEmployee.DataBind();

        }

        protected void listPages_Click(object sender, EventArgs e)
        {
            decimal PageCount = (decimal)((decimal)DataPager1.TotalRowCount / 2);

            if (PageNumber < PageCount)
            {
                PageNumber = PageNumber + 1;
                if (PageNumber >= PageCount)
                {
                    divpaging.Attributes["style"] = "display:none;";
                }
            }
            else
            {
                divpaging.Attributes["style"] = "display:none;";
            }

            int PageSize = 2 * PageNumber;//CurrentPage

            DataPager1.SetPageProperties(0, PageSize, true);
        }




        //protected void ProductListPager_PreRender(object sender, EventArgs e)
        //{
        //    ProductList db = new ProductList();
        //    ProductList.DataSource = db.GellAll();
        //    ProductList.DataBind();
        //}

    }

Dynamic create file and send in mail without save a file on server

StringBuilder messagebody1 = new StringBuilder();
            messagebody1.Append("Category,Product,First Name,Last Name,EmailId,Phone number,Location,PinCode,Message" + System.Environment.NewLine);
            messagebody1.Append(Category + "," + Product + "," + firstName + "," + lastName + "," + emailId + "," + phoneNumber + "," + location + "," + pincode + "," + queryText + System.Environment.NewLine);
            StringBuilder messagebody = new StringBuilder();
            messagebody.Append("Category:" + Category + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("Product:" + Product + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("First Name: " + firstName + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("Last Name: " + lastName + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("EmailId:" + emailId + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("Phone number:" + phoneNumber + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("Location:" + location + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("PinCode:" + pincode + System.Environment.NewLine + System.Environment.NewLine);
            messagebody.Append("Message:" + queryText + System.Environment.NewLine + System.Environment.NewLine);



            MemoryStream stream = new MemoryStream(Encoding.ASCII.GetBytes(messagebody1.ToString()));
            string to = "pramod.koli1@gmail.com";
            string from = ConfigurationManager.AppSettings["QueryEmail"].ToString();
            string subject = "Leave a query:" + category + "-" + product;
            string body = messagebody.ToString();
            SmtpClient SMTPServer = new SmtpClient("*********");
            MailMessage mailObj = new MailMessage(from, to, subject, body);
            mailObj.Attachments.Add(new Attachment(stream, "details.csv", "text/csv"));
           // mailObj.IsBodyHtml = true;
            SMTPServer.Send(mailObj);

Exception handle

using System;

class Program
{
    static void Main()
    {
 try
 {
     int value = 1 / int.Parse("0");
 }
 catch (Exception ex)
 {
     Console.WriteLine("HelpLink = {0}", ex.HelpLink);
     Console.WriteLine("Message = {0}", ex.Message);
     Console.WriteLine("Source = {0}", ex.Source);
     Console.WriteLine("StackTrace = {0}", ex.StackTrace);
     Console.WriteLine("TargetSite = {0}", ex.TargetSite);
 }
    }
}

Output
    (StackTrace was abbreviated for display.)

HelpLink =
Message = Attempted to divide by zero.
Source = ConsoleApplication1
StackTrace =    at Program.Main() in C:\...\Program.cs:line 9
TargetSite = Void Main()

HelpLink: This is empty because it was not defined on the exception. HelpLink is a string property.

Message: This is a short description of the exception's cause. Message is a read-only string property.

Source: This is the application name. Source is a string property that can be assigned to or read from.

StackTrace: This is the path through the compiled program's method hierarchy that the exception was generated from.

TargetSite: This is the name of the method where the error occurred. This property helps simplify what part of the errors are recorded.