AJAX Error Handle

function pageLoad()
{
  var instance = Sys.WebForms.PageRequestManager.getInstance();
 instance.add_endRequest(ehandler);
}
function ehandler(s, e)
{
if (e.get_error() != undefined)
{               
  e.set_errorHandled(true);
}
}

LINQ And Picture

TypeConverter tc = TypeDescriptor.GetConverter(typeof(Bitmap));
Bitmap b = (Bitmap)tc.ConvertFrom(c.Picture);
b.Save(context.Response.OutputStream, ImageFormat.Jpeg);
b.Dispose();

Silverligt UploadStringAsync ve Ado.net DataService

        string uri = Application.Current.Host.Source.AbsoluteUri;
        int index = uri.IndexOf("/ClientBin");
        uri = uri.Substring(0, index);
        WebClient wc = new WebClient();
        wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
        var query = "ad=" + txtAd.Text + "&soyad=" + txtSoyad.Text;
        wc.UploadStringAsync(new Uri(uri + "/Default.aspx"), query);
        wc.UploadStringCompleted += new UploadStringCompletedEventHandler(wc_UploadStringCompleted);

This collection already contains an address with scheme http. There can be at most one address per scheme in this collection

<serviceHostingEnvironment aspNetCompatibilityEnabled="true">
    <baseAddressPrefixFilters>
        <add prefix="http://www.blabla.com/"/>
    </baseAddressPrefixFilters>
</serviceHostingEnvironment>

You encounter this error in the web.config file and enter the above code in the part.

Silverlight and Cookie

DateTime expiration = DateTime.Now.AddDays(5);
string cookie = string.Format("ad={0};expires={1}", txtCookie.Text, expiration.ToString("R"));
HtmlPage.Document.SetProperty("cookie", cookie);

Read All Cookies in Silverlight

var cooks = HtmlPage.Document.Cookies.Split(';');
foreach (var s in cooks)
{
    cook = s.Split('=');
    MessageBox.Show(cook[1]);
}

This also can easily access cookies by asp.net.

SilverLight And Double Click

Normally, double-click does not exist in Silverlight.But within a period of time after you press the left button pressing the left button  double click event in a more duration 300 ms.

public partial class Page : UserControl
    {
        DispatcherTimer timer;
        public Page()
        {
            InitializeComponent();
            Loaded += new RoutedEventHandler(Page_Loaded);
        }

        void Page_Loaded(object sender, RoutedEventArgs e)
        {
            timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromMilliseconds(300);
            timer.Tick += new EventHandler(timer_Tick);
        }

        void timer_Tick(object sender, EventArgs e)
        {
            timer.Stop();
        }

        private void Image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (timer.IsEnabled)
            {
                MessageBox.Show("Double Clicked.");
            }
            else
            {
                timer.Start();
            }
        }
    }

Sql Server Read An External Scheme and Create

declare @schema xml
select @schema=c from openrowset(bulk 'c:\data.xsd',single_blob) as temp(c)
create xml schema collection DataSchema as @schema

Call A Javascript Function With Silverlight

ScriptObject script = (ScriptObject)HtmlPage.Window.GetProperty("ChangeImg");
script.InvokeSelf();

İlk satırda sayfasımızda yer alan ChangeImg adlı fonksiyona erişiyoz ve alt satırda bu fonksiyonu çalıştırıyoruz.

Eğer parametre göndermek istersek;
script.InvokeSelf("par1","par2");

Read A Xml Document With Silverlight(XLINQ)

private void btnSend_Click(object sender, RoutedEventArgs e)
{
string uri = Application.Current.Host.Source.AbsoluteUri;
int index = uri.IndexOf("/ClientBin");
uri = uri.Substring(0, index);
txtAd.Text = uri;
WebClient client = new WebClient();
client.DownloadStringAsync(new Uri(uri+"/data.xml"));
client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
}
okuma tamamlandığında ise;
void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
{
try
{
XElement element = XElement.Parse(e.Result);
txtAd.Text = (from x in element.Descendants("musteri")
select x.Element("ad").Value).First();
}
catch (Exception ex)
{
System.Windows.Browser.HtmlPage.Window.Alert(ex.InnerException.Message);
}
}

Silverlight Send Parameter And Start Random Page

string sayfaAdı=e.InitParams["ad"]
var myPage=(UserControl)this.GetType().Assembly.CreateInstance(this.GetType().Namespace + "." + ad);
this.RootVisual = myPage;

veya daha kolay olarak girilen parametreye sayfayı belirleriz.
switch (ad)
{
case "Page1":
this.RootVisual = new Page1();
break;
case "Page2":
this.RootVisual = new Page2();
break;
default:
this.RootVisual = new Page();
}

SilverLight and App Class

((App)Application.Current).YourMethod()

Silverlight ve font embed

Fontu projenize ekledikten sonra fontun Visual Studio'da özellikler kısmına gelip "Build Action" kısmından "Resources" i seçiniz.
Daha sonra bu fontu kullanacağımız elemente aşğıdakini yazınız;
FontFamily="consola.ttf#Consolas"

Silverlight ve fullscreen

Application.Current.Host.Content.IsFullScreen = true;

Silverlight And Path Files

var path = new Uri("http://" + System.Windows.Browser.HtmlPage.Document.DocumentUri.Host + "/videos/" + cmb_videos.SelectedItem.ToString());

SilverLight ve Wcf web service

protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
{
return base.CreateServiceHost(serviceType, new Uri[] { new Uri("http://www.yoursite.com/Service.svc") });
}

Service sınıfınıda ServiceHostFactory sınıfından türetin.

The "function name" is not a recognized built-in function name'.

myfunc () instead dbo.myunc () type In SqlServer

The current database compatibility level does not support managed objects

When you receive this error in Sql Server Run the following sp. 'Northwind' database, write the name of your own instead.

exec sp_dbcmptlevel 'Northwind', 90

Trigger and Cursor

create trigger DeleteTrg
on musteri
instead of delete
as
declare @myid int;
declare id_cursor cursor
for
select ID from deleted;
open id_cursor;
fetch next from id_cursor into @myid;
while @@fetch_status=0
begin
print @myid;
fetch next from id_cursor into @myid;
end
close id_cursor;
deallocate id_cursor;

İnstead of triggeri ile musteri tablomuzda silinen musterilerin ID lerini sqlserverda ekrana basıyoruz.

Random Five Record With SqlServer

select top 5 ID,ad,soyad,newID() as random from musteri order by random

linq and left join

var datas = from m in db.Musteris
join n in db.Urunlers
on m.ID equals n.musteriID into records
from r in records.DefaultIfEmpty()
select new { Ad=m.ad, Urun=r.urun ?? "Urun Yok." };

Sql Server Enable Full Text Searching

EXEC sp_fulltext_database 'enable'
komutu çalıştırılır.
Daha sonra ile ilgili tabloya sağ tıklanır ve full text index seçilir.

Linq ve XPathSelectElement

XPathSelectElement metodunu kullanabilmek için önce System.Xml.XPath namespace ini projeye dahil etmek gerekir.
XDocument xDocument = new XDocument(
new XElement("Musteriler",
new XElement("Musteri",
new XAttribute("meslek", "Ogretmen"),
new XElement("ad", "Engin"),
new XElement("soyad", "Guven")),
new XElement("Musteri",
new XAttribute("meslek", "Doktor"),
new XElement("ad", "Hasan"),
new XElement("soyad", "Tekin"))));

ile bir xml dokumanı oluşturuyoruz. Daha sonra;

XElement element = xDocument.XPathSelectElement("Musteriler/Musteri[@meslek='Ogretmen']");

ile mesleği öğretmen olan kaydı seçiyoruz. Eğer bu kaydın adını yazdırmak istersek
Response.Write(element.Element("ad").Value);

Eğer xml dokumanımızdaki attribute göre değilde element değerine göre yapmak isteseydik;

XElement element = xDocument.XPathSelectElement("Musteriler/Musteri[ad='Engin']");

Insert and Select Operations With ExecuteMethodCall

ALTER PROCEDURE MusInsert

(
@ad varchar(50),
@soyad varchar(50)
)

AS
insert into musteri(ad,soyad) values(@ad,@soyad)
select * from musteri where num=scope_identity()

Stored Proceduremiz önce veri ekliyo sonra eklenmiş olan veriyi geri gönderiyor.


[Function(Name="dbo.MusInsert")]
[ResultType(typeof(musteri))]
public IMultipleResults MusInsert([Parameter(DbType="VarChar(50)")] string ad, [Parameter(DbType="VarChar(50)")] string soyad)
{
var result = this.ExecuteMethodCall(this, ((MethodInfo)(MethodInfo.GetCurrentMethod())), ad, soyad);
return (IMultipleResults)result.ReturnValue;
}

Burada ResultType(typeof(musteri))] ile geri dönecek olan verinin hangi nesne tipinde olduğunu
yazmak gerekir.

Iequalitycomparer Sorting Objects

public class EqualMusteri : IEqualityComparer
{
#region IEqualityComparer Members

public bool Equals(musteri x, musteri y)
{
if ((x.ad.Trim() == y.ad.Trim()) && (x.soyad.Trim() == y.soyad.Trim()))
{
return true;
}
else
{
return false;
}
}

public int GetHashCode(musteri obj)
{
return base.GetHashCode();//important code.
}

#endregion
}
Buradan siz müşteri için kendi özel nesnenizi yazınız.