Store Data in Special Folder in system

LogFile = LogFile +

{

}
string LogFile = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);"\\Log.txt";if(!File.Exists(LogFile))File.WriteAllText(LogFile, "Hi There");else{

}string Data=File.ReadAllText(LogFile);

Open memoryStream in Browser

"_wb.DocumentStream = _originalDocStream;"

where wb is the object of webrowser.
and originalDocStream is memorystream

Code to Check filte Type by reading its Content

public bool isPDFDocument(string file)
{

string mimeout = "";

int MaxContent = 0;

Stream fs = null;

byte[] buf = null;

int result = 0;

try
{

HttpWebRequest request = (HttpWebRequest)

WebRequest.Create(file);

HttpWebResponse response = (HttpWebResponse)
request.GetResponse();
fs = response.GetResponseStream();

//MaxContent = response.ContentLength;

if (response.ContentLength > 4096)
{
MaxContent = 4096;
}

else
{
MaxContent =
Convert.ToInt32(response.ContentLength);
}

buf =
new byte[MaxContent + 1];
fs.Read(buf, 0, MaxContent);
fs.Close();
result = FindMimeFromData(
IntPtr.Zero, null, buf, MaxContent, null, 0, ref mimeout, 0);

if (mimeout != null && (mimeout.ToLower().Contains("pdf") || mimeout.ToLower().Contains("tif")))
{

return true;
}

else
{

return false;
}
}

catch (Exception ex)
{

return false;
}
}

Copy filters for RadGridView to RadChart in Silverlight

void RadGridView1_Filtered(object sender, GridViewFilteredEventArgs e)
        {
 
            RadChart1.FilterDescriptors.Clear();
             

            foreach (IFilterDescriptor Filter in RadGridView1.FilterDescriptors)
            {
               
                RadChart1.FilterDescriptors.Add(Filter);
}
}

Fetch and display columns from MYSQL DB

 public void FetchData()

        {

            List<string> ColumnNames = new List<string>();

            string MyConString = ConfigurationManager.ConnectionStrings["conRadBoard"].ToString();

            OdbcConnection MyConnection = new OdbcConnection(MyConString);

            try

            {

                MyConnection.Open();

                OdbcCommand MyCommand =

                new OdbcCommand("show Columns from employee_data", MyConnection);

                OdbcDataAdapter ad = new OdbcDataAdapter(MyCommand);

                DataSet ds = new DataSet();

                ad.Fill(ds);

                if (ds.Tables[0] != null && ds.Tables[0].Rows.Count > 0)

                {

                    foreach (DataRow dr in ds.Tables[0].Rows)

                    {

                        if (dr["Field"] != null)

                        {

                            ColumnNames.Add(dr["Field"].ToString());

                        }

                    }

                }

                string sqlstr="Select ";

                int x = ColumnNames.Count;

                foreach (string s in ColumnNames)

                {

                    if (s != string.Empty)

                    {

                        sqlstr += s;

                        x--;

                    }

                    if(x>0)

                    {

                        sqlstr += ",";

                    }

                }

                ds.Clear();

               

               

                sqlstr += " from employee_data";

                MyCommand.Parameters.Clear();

                MyCommand = new OdbcCommand(sqlstr,MyConnection);

                ad = new OdbcDataAdapter(MyCommand);

                ds = new DataSet();

                ad.Fill(ds);

            }

            catch (Exception ex)

            {

            }

            finally

            {

                MyConnection.Close();

            }

        }

IValue Convertor for radgrid view silverlight Telerik

 

public class PhoneDataConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

Int64 num;

if( Int64.TryParse(value.ToString(), out num))

return String.Format("{0:(###) ###-####}", num);

else

return value.ToString();

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

throw new  NotImplementedException();

}

} void gridMultiSelect_DataLoaded(object sender, EventArgs e)           {               for (int x = 0; x < gridMultiSelect.Columns.Count; x++)               {                   if (gridMultiSelect.Columns[x].Header.ToString().ToUpper() == "PHONE")                   {                       GridViewDataColumn gridVDC = (GridViewDataColumn)gridMultiSelect.Columns[x];                       gridVDC.DataMemberBinding.Converter = new PhoneDataConverter();                       gridVDC.Width = new GridLength(100);                   }               }           }

Download and display images from http path in silverlight

WebClient downloader = new WebClient();

public Page()
  {
   InitializeComponent();
   downloader.OpenReadCompleted += new OpenReadCompletedEventHandler(downloader_OpenReadCompleted);
  }
  void downloader_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
  {
   // Display an image from a package.
   //StreamResourceInfo photosDownloaded = new StreamResourceInfo(e.Result as
   Stream, null);
   //string photoToGrab = e.UserState.ToString();
   //StreamResourceInfo photoStream = Application.GetResourceStream(photosDownloaded,
   new Uri(photoToGrab, UriKind.Relative));
   //BitmapImage bitmap = new BitmapImage();
   //bitmap.SetSource(photoStream.Stream);
   //bitmap.SetSource(e.Result);
   //imgPhoto.Source = bitmap;
   // Display a single image.
   BitmapImage bitmap = new BitmapImage();
   bitmap.SetSource(e.Result);
   imgPhoto.Source = bitmap;
  }
  private void dgAthleteList_SelectionChanged(object sender, EventArgs e)
  {
   AthleteDisplayInfo athlete = (AthleteDisplayInfo)dgAthleteList.SelectedItem;
   // verify that an athlete is selected.
   if (athlete != null)
   {
    txtFirstName.Text = athlete.FirstName;
    txtLastName.Text = athlete.LastName;
    // download a package.
    // downloader.OpenReadAsync(new Uri("Photos/Photos.zip", UriKind.Relative),
    athlete.AthleteId.ToString() + ".JPG");
    // download a single file.
    downloader.OpenReadAsync(new Uri("Photos/" + athlete.AthleteId.ToString() +
    ".JPG", UriKind.Relative));
   }

Filter XML from XELement in Silverlight

XElement rss = XElement.Load(sr); s =
new XElement("NewDataSet",
from table in rss.Elements("Table")
select new XElement("Table", table.Elements()
)
);
filterCategory =

new XElement("NewDataSet",
from table in rss.Elements("Table")
where (string)table.Element("PDF_NAME") == "Shiley_Quick_Reference_Guide.pdf"
select new XElement("Table", table.Elements()
)
);

Convert Stream into MemoryStream

using (MemoryStream ms = new MemoryStream())
{
int bytes = 0;
byte[] temp = new byte[4096];
while ((bytes = s.Read(temp, 0, temp.Length)) 0)
ms.Write(temp, 0, bytes);
Response.BinaryWrite(ms.ToArray());
}