window.location.Reload() and window.location.href=window.location.href; difference

window.location.Reload() is refresh page, it will submit the data again and has a alert message is continue.

window.location.href=window.location.href is redirect url.

Get screen width Javascript

<script type="text/javascript" language="javascript">

    if (document.getElementById("rightMenu") != null) {

        if (screen.width < 1200) {

            document.getElementById("rightMenu").style.display = "none";

        }

    }

</script>

position fixed for IE6

Add this code in the header

<!--[if IE 6]>
<style type="text/css">
.promomenu{
position:absolute; /* position fixed for IE6 */
top:expression(200+((e=document.documentElement.scrollTop)?e:document.body.scrollTop)+'px');
right:expression(0+((e=document.documentElement.scrollLeft)?e:document.body.scrollLeft)+'px');
}
</style>
<![endif]-->


日期時間倒數器

  <SCRIPT type="text/javascript" language="javascript">

      var startDate = new Date();

      var endDate = new Date(2012, 8, 20, 10, 00);

      var spantime = (endDate - startDate) / 1000;

      function getString(dt) {

          return dt.getFullYear() + "?" + (dt.getMonth() + 1) + "?" + dt.getDate() + "?" + dt.getHours() + "?" + dt.getMinutes() + "?";

      }

      function leftPad(n, len) {

          return (new Array(len - String(n).length + 1)).join("0").concat(n);

      }

      function cal() {

          spantime--;

          var d = Math.floor(spantime / (24 * 3600));

          var h = Math.floor((spantime % (24 * 3600)) / 3600);

          var m = Math.floor((spantime % 3600) / (60));

          var s = Math.floor(spantime % 60);

          str = d + "? " + h + "?" + m + "? " + s + "? ";

          document.getElementById("hours2").innerHTML = leftPad(h, 2);

          document.getElementById("min2").innerHTML = leftPad(m, 2);

          document.getElementById("sec2").innerHTML = leftPad(s, 2);

          if (document.getElementById("hours3") != null) {

              document.getElementById("hours3").innerHTML = leftPad(h, 2);

              document.getElementById("min3").innerHTML = leftPad(m, 2);

              document.getElementById("sec3").innerHTML = leftPad(s, 2);

          }

      }

      window.onload = function () {

          setInterval(cal, 1000);

      }

</SCRIPT>

DetailsView FindControl when Edit or Insert mode

Must in the PreRender or ItemCreated even.

.aspx file:

onprerender="DetailsView1_PreRender"

.cs file:

protected void DetailsView1_PreRender(object sender, EventArgs e)

    {

        if (IsPostBack)

        {

            DetailsView detailsView = (DetailsView)sender;

            if (detailsView.CurrentMode == DetailsViewMode.Edit)

            {

                DropDownList dropDownList = (DropDownList)detailsView.FindControl("DropDownList1");

                dropDownList.Items.Add(new ListItem("text", "value"));

            }

        }

    }

Create Google Calendar Event using Google Calendar API

Google api asp.net client download

http://code.google.com/p/google-api-dotnet-client/

public void CreateCalendarEvent(string content)

        {

            CalendarService calendarService = new CalendarService("CNBlogsMeeting");

            calendarService.setUserCredentials("Email", "Password");

            EventEntry entry = new EventEntry();

            //日曆標題與內容

            entry.Title.Text = content;

            entry.Content.Content = content;

            //開始與結束時間，17:00~18:00

            When eventTime = new When(DateTime.Now,

                DateTime.Now);

            entry.Times.Add(eventTime);

            //需要邀請的参會者

            //Who who = new Who();

            //who.Email = "cho88hk@gmail.com";

            //who.Rel = "http://www.yahoo.com.hk";

            //entry.Participants.Add(who);

            //给被邀請者發送通知

            //entry.Notifications = true;

            //被邀請者可以修改該日曆項

            //entry.ExtensionElements.Add(new GuestsCanModify("true"));

            Uri postUri = new Uri("https://www.google.com/calendar/feeds/default/private/full");

            AtomEntry insertEntry = calendarService.Insert(postUri, entry);

            //Assert.NotNull(insertEntry);

        }

Formatting the GridView Based on the Underlying Data

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

{

        if (e.Row.RowType == DataControlRowType.DataRow)

        {

            // determine the value of the status field

            int status = Convert.ToInt32(DataBinder.Eval(e.Row.DataItem, "status"));

            // color the background of the row

            switch (status)

            {

                case 0:

                    e.Row.BackColor = Color.LightGreen;

                    break;

                case 1:

                    e.Row.BackColor = Color.Red;

                    break;

                case 2:

                    e.Row.BackColor = Color.Blue ;

                    break;

            }

               

           

        }

}

HtmlAgilityPack 抓取HTML上的資訊 asp.net c#

HtmlAgilityPack 是可以簡單抓取html上特定位置資訊。

先在project>add reference 加上HtmlAgilityPack.dll
再配合firebug 的XPATH

//以apple store iphone 4s 為例

                    string str = "http://store.apple.com/hk/browse/home/shop_iphone/family/iphone/iphone4s";

 HttpWebRequest httpWebRequest = WebRequest.Create(str) as HttpWebRequest;

                try

                {

                    

                    HttpWebResponse httpWebResponse = httpWebRequest.GetResponse() as HttpWebResponse;

                    Stream stream = httpWebResponse.GetResponseStream();

                    StreamReader reader = new StreamReader(stream, Encoding.UTF8);

                    string s = reader.ReadToEnd();

                    reader.Close();

                    stream.Close();

                    httpWebResponse.Close();

                    HtmlAgilityPack.HtmlDocument htmlDoc = new HtmlAgilityPack.HtmlDocument();

                    htmlDoc.LoadHtml(s);

                    //16GB 32GB 64GB 的運送時間XPATH

                    HtmlNode anchors = htmlDoc.DocumentNode.SelectSingleNode(

"/html/body/div[2]/div[3]/div/div[2]/div[2]/div[3]/ul/li/label/span/span[3]/span");

                    HtmlNode anchors32 = htmlDoc.DocumentNode.SelectSingleNode(

"/html/body/div[2]/div[3]/div/div[2]/div[2]/div[3]/ul/li[2]/label/span/span[3]/span");

                    HtmlNode anchors64 = htmlDoc.DocumentNode.SelectSingleNode(

"/html/body/div[2]/div[3]/div/div[2]/div[2]/div[3]/ul/li[3]/label/span/span[3]/span");

//output

txtStatus.Text += anchors.InnerText + " " + anchors32.InnerText + " " + anchors64.InnerText + " ";

                }

                catch (WebException web)

                {

                    

                    //error message

                }

apple store iphone 4s開售情況

asp.net sent GMAIL email C#

System.Net.Mail.SmtpClient MySmtp = new System.Net.Mail.SmtpClient("smtp.gmail.com", 587);

//設定你的帳號密碼

MySmtp.Credentials = new System.Net.NetworkCredential("YourID", "YourPassword");

//Gmial 的 smtp 使用 SSL

MySmtp.EnableSsl = true;

//發送Email

MySmtp.Send("發送者<sender@gmail.com>", "收件者<receiver@gmail.com>", "C# Gmail發信測試", "文件內容");

GridView DataFormatString

日期格式: DataFormatString={0:yyyy-MM-dd}

decimal 小數後2位: DataFormatString={0:F2}

slide box Jquery

Source:

Multiple Files Upload asp.net Uploadify

Uploadify這個基於Flash的支持多檔上傳的Jquery外掛程式

官網:http://www.uploadify.com/

問題:

uploadify在ie下可以正常上傳，在實現非同步上傳的時候，每一個檔在上傳時都會提交給伺服器一個請求。每個請求都需要安全驗證，session和cookie的校驗。由於uploadify是借助flash來上傳的，每一次向後臺發送資料流程請求時，ie會自動把本地cookie存儲捆綁在一起發送給伺服器。但firefox、chrome不會這樣做，所以在firefox 和chrome會出現http error 和 IO error.

解決方法:

在Global.asax加上:

void Application_BeginRequest(object sender, EventArgs e)

    {

        try

        {

            string session_param_name = "ASPSESSID";

            string session_cookie_name = "ASP.NET_SessionId";

            if (HttpContext.Current.Request.Form[session_param_name] != null)

            {

                UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form[session_param_name]);

            }

            else if (HttpContext.Current.Request.QueryString[session_param_name] != null)

            {

                UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString[session_param_name]);

            }

        }

        catch

        {

        }

       

        try

        {

            string auth_param_name = "AUTHID";

            string auth_cookie_name = FormsAuthentication.FormsCookieName;

            if (HttpContext.Current.Request.Form[auth_param_name] != null)

            {

                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.Form[auth_param_name]);

            }

            else if (HttpContext.Current.Request.QueryString[auth_param_name] != null)

            {

                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.QueryString[auth_param_name]);

            }

        }

        catch { }

    }

    private void UpdateCookie(string cookie_name, string cookie_value)

    {

        HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);

        if (null == cookie)

        {

            cookie = new HttpCookie(cookie_name);

        }

        cookie.Value = cookie_value;

        HttpContext.Current.Request.Cookies.Set(cookie);//重新設定請求中的cookie值，將伺服器端的session值賦值給它

    }

在放javascript 加上auth 和 ASPSESSID，然後在scriptData　傳送cookie。

<script type = "text/javascript">

            var auth = "<% = Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>";

            var ASPSESSID = "<%= Session.SessionID %>";

            $(window).load(

    function () {

        $("#<%=FileUpload1.ClientID%>").fileUpload({

            'uploader': '/js/uploader.swf',

            'cancelImg': '/image/cancel.png',

            'buttonText': 'Browse Files',

            'script': '/js/Upload.ashx',

            'folder': 'uploads',

            'fileDesc': 'Image Files',

            'fileExt': '*.jpg;*.jpeg;',

            'multi': true,

            'auto': false,

            'simUploadLimit' : 1,//如果沒限制有幾會上傳不完整

            'onComplete': function (event, ID, fileObj, response, data) {

                $("#msg").append(response + "<br/>");

            },

            'onError': function (event, ID, fileObj, errorObj) {

                alert(errorObj.type + ' Error: ' + errorObj.info + errorObj.status + errorObj.text);

            },

            'scriptData': { 'ASPSESSID': ASPSESSID,'AUTHID': auth }

        });

    }

);

            function cleanImg() {

                $("#msg").html("");

            }

</script>

Upload.ashx:

<%@ WebHandler Language="C#" Class="Upload" %>

using System;

using System.Web;

using System.IO;

public class Upload : IHttpHandler {

   

    public void ProcessRequest (HttpContext context) {

        context.Response.ContentType = "text/plain";

        context.Response.Expires = -1;

        try

        {

            HttpPostedFile postedFile = context.Request.Files["Filedata"];

           

           // string savepath = "";

            string tempPath = "";

            tempPath = @"c:\temp\";

            //savepath = context.Server.MapPath(tempPath);

            string filename = postedFile.FileName;

            if (!Directory.Exists(tempPath))

                Directory.CreateDirectory(tempPath);

            string file2 = tempPath + filename;

            int count = 1;

            //if exist, filename "-" +1

            while (File.Exists(file2))

            {

                file2 = tempPath + filename + "-" + count + ".JPG";

                count++;

            }

           

           

            postedFile.SaveAs(file2);

            //context.Response.Write(file2.Replace("c:",""));

            context.Response.Write(context.Request["firstName"]);

            context.Response.StatusCode = 200;

        }

        catch (Exception ex)

        {

            context.Response.Write("Error: " + ex.Message);

        }

    }

    public bool IsReusable {

        get {

            return false;

        }

    }

}

他是每個file行一次Upload.ashx

Source download