how to generate json file from .net object

    public class data_city
    {
        private string _city;

        public string city
        {
            get { return _city; }
        }

        public data_city(string city)
        {
            _city = city;
        }

    }


    public class data_state
    {
        public data_state(string id, string name)
        {
            _id = id;
            _name = name;
        }

        private string _id;

        public string id
        {
            get { return _id; }
        }
        private string _name;

        public string name
        {
            get { return _name; }
        }

        private List<data_city> _Cities = new List<data_city>();

        public List<data_city> cities
        {
            get { return _Cities; }
            set { _Cities = value; }
        }

    }


    private void GenerateJsonCities()
    {

        var state = from s in developerDataContext.States
                                orderby s.DisplayOrder
                                select new { id = s.StateCode, name = s.Description };



        List<data_state> dsl = new List<data_state>(); 
        foreach (var s in state)
        {
            data_state ds = new data_state(s.id, s.name);


            List<City> ss  = developerDataContext.Cities.Where(p => p.StateCode == s.id).OrderBy(p => p.City1).ToList();

            foreach (City c in ss)
            {
                ds.cities.Add(new data_city(c.City1));
            }

            dsl.Add(ds);

        }
       
           

        JavaScriptSerializer serializer = new JavaScriptSerializer();

        string json = serializer.Serialize(dsl);

        string city_json = string.Format("var data_state = {0};", json);

        File.WriteAllText(MapPath("~/scripts/referenceData/state_city.js"), city_json);

       

    }

how to get optimum sizes of resized image with proportion in .NET

Private _MaxWidth As Integer
Private _MaxHeight As Integer

Public Property MaxWidth() As Integer
Get
Return _MaxWidth
End Get
Set(ByVal value As Integer)
_MaxWidth = value
End Set
End Property

Public Property MaxHeight() As Integer
Get
Return _MaxHeight
End Get
Set(ByVal value As Integer)
_MaxHeight = value
End Set
End Property



Private Function CalculateOptimumImageSize(ByVal src As System.Drawing.Image) As Integer()
Dim sizeImgDim As Integer() = New Integer(1) {}

sizeImgDim(0) = src.Width
sizeImgDim(1) = src.Height

'if the max and min are larger than the original size, therefore follow the original
If sizeImgDim(0) > _MaxWidth OrElse sizeImgDim(1) > _MaxHeight Then
Dim imageRatio As Decimal = CDec(sizeImgDim(0)) / CDec(sizeImgDim(1))
Dim w As Decimal = imageRatio * CDec(_MaxHeight)
If w > _MaxWidth Then

sizeImgDim(0) = _MaxWidth
Else
sizeImgDim(0) = Convert.ToInt32(w)
End If


Dim h As Decimal = CDec(_MaxWidth) / imageRatio
If h > _MaxHeight Then

sizeImgDim(1) = _MaxHeight
Else

sizeImgDim(1) = Convert.ToInt32(h)

End If
End If
Return sizeImgDim
End Function

Clean up html code and words tag in .NET

Private Shared Function CleanHTML(ByVal html As String) As String
html = Regex.Replace(html, "<[/]?(font|span|xml|del|ins|[ovwxp]:\w+)[^>]*?>", "", RegexOptions.IgnoreCase)
html = Regex.Replace(html, "<([^>]*)(?:class|lang|style|size|face|[ovwxp]:\w+)=(?:'[^']*'|""[^""]*""|[^\s>]+)([^>]*)>", "<$1$2>", RegexOptions.IgnoreCase)
html = Regex.Replace(html, "<([^>]*)(?:class|lang|style|size|face|[ovwxp]:\w+)=(?:'[^']*'|""[^""]*""|[^\s>]+)([^>]*)>", "<$1$2>", RegexOptions.IgnoreCase)
Return html
End Function

How to capitalize every first letter using .NET

Public Shared Function Capitalize(ByVal value As String) As String
Return System.Globalization.CultureInfo.CurrentCulture.TextInfo.ToTitleCase(value)
End Function

Regex for strong password implementation

Advance password

(?=^.{12,}$)((?=.*\d)(?=.*\W+))(?![.\n])(?=.*[A-Z])(?=.*[a-z]).*$

Passwords will contain at least (1) upper case letter
Passwords will contain at least (1) lower case letter
Passwords will contain at least (1) number or special character
Passwords will contain at least (12) characters in length

Basic password

(?=^.{12,}$)((?=.*\d)(?=.*\W+))(?![.\n])(?=.*[a-z]).*$

Passwords will contain at least (1) letter
Passwords will contain at least (1) number or special character
Passwords will contain at least (12) characters in length

how to add mata keyword & meta description in ASP.NET?

There is no easy way to add but I have a simple method to introduce


pageEx.cs

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 class PageEx : System.Web.UI.Page
{

private HtmlMeta
metaDescription = new HtmlMeta();
private HtmlMeta metaKeywords = new
HtmlMeta();

public string Description
{
get { return
metaDescription.Content; }
set { metaDescription.Content = value; }
}


public string[] Keywords
{
get
{
if
(metaKeywords.Content == null)
{
return new string[] { "" };
}
else
{
return metaKeywords.Content.Split(new char[] { ',' });
}
}

set
{
if (value != null)
{
metaKeywords.Content =
string.Join(",", value);
}
}
}


public PageEx()
{
Init += new EventHandler(PageEx_Init);
}

void PageEx_Init(object
sender, EventArgs e)
{
//Add the description Meta control
metaDescription.Name = "description";
Page.Header.Controls.Add(metaDescription);
//Add the keywords Meta
control
metaKeywords.Name = "keywords";
Page.Header.Controls.Add(metaKeywords);
}


}

someasp.aspx

protected void Page_Load(object sender, EventArgs e)
{

this.Description = "the power 123";
this.Keywords = new string[] {
"Enquiries", "enquiry", "contact", "contacts", "email", "tel" };

}

Hope this helps :)

a simple method to manipulate data using sql using .net

public static DataTable ExecuteSQL(string sql, Dictionary parameters)
{
DataTable dt = new DataTable("DataTable");
using (SqlConnection myConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["localConnectionString"].ConnectionString))
{
myConnection.Open();
SqlCommand mySqlCommand = new SqlCommand(sql, myConnection);

if (parameters != null)
{
foreach (KeyValuePair p in parameters)
{
mySqlCommand.Parameters.AddWithValue(p.Key, p.Value);
}
}

using (SqlDataReader datareader = mySqlCommand.ExecuteReader())
{
dt.Load(datareader);
}
}
return dt;
}

//insert a tag record
Dictionary param = new Dictionary();
param.Add("@TagName", txtTagName.Text);
ExecuteSQL("INSERT TOP (200) INTO Tag(TagName) VALUES (@TagName)", param);