C#

double MyPie { get; set; } = "3.141";
string MyLove { get; set; } = "Pizza";

[DefaultValue(0.3141)]
double MyPie { get; set; }

[DefaultValue("Pizza")]
string MyLove { get; set; }

double _myPie = 0.3141;
double MyPie { get { return _myPie; } set { _myPie = value; } }

double _myLove = "Pizza";
double MyLove { get { return _myLove; } set { _myLove = value; } }

using System;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;

using CSharpUtils;
namespace MyAppNamespace
{
  public class TestClass
  {
    [DefaultValue(0.3141)]
    public double MyPie { get; set; }

    [DefaultValue("Pizza")]
    public string MyLove { get; set; }

    public TestClass()
    {
      MessageBox.Show(string.Format("MyPie = {0}, MyLove = {1}", MyPie, MyLove == null ? "null" : MyLove));
      int ret = (this as Object).ResetPropsUsingDefaultAttributes(false);
      MessageBox.Show(string.Format("MyPie = {0}, MyLove = {1}. {2} properties we set", MyPie, MyLove == null ? "null" : MyLove, ret));
      MyLove = "My dear wife";
      MessageBox.Show(string.Format("MyPie = {0}, MyLove = {1}", MyPie, MyLove == null ? "null" : MyLove));
      ret = (this as Object).ResetPropsUsingDefaultAttributes(false);
      MessageBox.Show(string.Format("MyPie = {0}, MyLove = {1}. {2} properties we set", MyPie, MyLove == null ? "null" : MyLove, ret));
    }
  }
}

using System;
using System.Text;
using System.Reflection;
using System.ComponentModel;

namespace CSharpUtils
{
  static class CSharpUtilsExtensionMethods
  {
    public static int ResetPropsUsingDefaultAttributes(this Object oThis, bool initInheritedProperties)
    {
      int count = 0;
      //BindingFlags.Static
      Type oType = oThis.GetType();
      PropertyInfo[] infos = oType.GetProperties(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);
      foreach (PropertyInfo inf in infos)
      {
        if (initInheritedProperties || inf.DeclaringType.Equals(oType))
        {
          object[] oDefAtts = inf.GetCustomAttributes(typeof(DefaultValueAttribute), initInheritedProperties);
          if (oDefAtts.Length > 0)
          {
            DefaultValueAttribute defAtt = oDefAtts[oDefAtts.Length - 1] as DefaultValueAttribute;
            if (defAtt != null && defAtt.Value != null && !defAtt.Value.Equals(inf.GetValue(oThis, BindingFlags.GetProperty, null, null, null)))
            {
              inf.SetValue(oThis, defAtt.Value, BindingFlags.SetProperty, null, null, null);
              count++;
            }
          }
        }
      }
      return count;
    }
  }
}

using System;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;

using CSharpUtils;
namespace MyAppNamespace
{
  public class TestClass
  {
    [DefaultValue(0.3141)]
    public double MyPie { get; set; }

    [DefaultValue("Pizza")]
    public string MyLove { get; set; }


    public void ResetProps()
    {
      (this as Object).ResetPropsUsingDefaultAttributes(false);
    }
    public TestClass()
    {
      ResetProps();
    }
  }
}

// load the file that we want to upload into memory
fileStream = new System.IO.FileStream(strFile, System.IO.FileMode.Open, System.IO.FileAccess.Read);
reader = new System.IO.BinaryReader(fileStream);
data = reader.ReadBytes((int)fileStream.Length);

// open the connection to the database
//conn = new System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + AccessFile.Text);
//conn.Open();

// determine if the file already exists.  If the file does not already
// exist, add the file to the table.
cmd = new OleDbCommand();
cmd.Connection = Module.objConnection;
string strQuery =
    "SELECT * FROM PICTURES WHERE " +
    "STCODE="+ textBox1.Text +" AND " +
    "STSEQ="+ dataGridView1["STSEQ",dataGridView1.CurrentCell.RowIndex].Value.ToString() +"  ";
cmd.CommandText = strQuery;
dr = cmd.ExecuteReader();
if (dr.HasRows == false)
{
    dr.Close();
    cmd.CommandText = "INSERT INTO PICTURES (STCODE,STRNO,STSEQ,FILENAME,FILESIZE,FILETYPE) " +
        "VALUES(" + textBox1.Text + ", " +
        "" + dataGridView1["STRNO", dataGridView1.CurrentCell.RowIndex].Value.ToString() + ", " +
        "" + dataGridView1["STSEQ", dataGridView1.CurrentCell.RowIndex].Value.ToString() + ", " +
        "'" + fileName + "'," + data.Length + ",'" + type + "') ";
    //cmd.CommandText = "INSERT INTO PICTURES (STCODE,STRNO,STSEQ,FILENAME,FILETYPE) " +
    //    "VALUES(" + textBox1.Text + ", " +
    //    "" + dataGridView1["STRNO", dataGridView1.CurrentCell.RowIndex].Value.ToString() + ", " +
    //    "" + dataGridView1["STSEQ", dataGridView1.CurrentCell.RowIndex].Value.ToString() + ",'" + textBox1.Text.Trim() + "_" + textBox2.Text.Trim() + "." + type + "') ";
    //    //"'" + fileName + "'," + data.Length + ",'" + type + "') ";

    cmd.ExecuteNonQuery();

if (Environment.OSVersion.Version.Major >= 6)
            {
CX509CertificateRequestPkcs10 request = new CX509CertificateRequestPkcs10();
request.InitializeDecode(txtP10.Text, EncodingType.XCN_CRYPT_STRING_BASE64_ANY);                    request.CheckSignature(Pkcs10AllowedSignatureTypes.AllowedKeySignature);
lblSubject.Text = "Subject:" + (((CX500DistinguishedName)request.Subject).Name);
lblKeyLenght.Text = "Key length:" + (request.PublicKey.Length);
lblAlgorithm.Text = "Algorithm:" + (request.HashAlgorithm.FriendlyName);
}
else
{ // how to decode pkcs#10 in XP?
}

controller = Controller.BuildSingleRow(_sheet);

_animator = Animator
.WithStartupInfo(_controller, PlayMode.Normal, 1f);

I am creating a window application that need to use sql server database. I want to install this application to client machine without installing sql server or sql express so that my application can still connect to a database on server that i will be providing at client system.

How can i connect to a database(mdf) on client machine through my window application without installing sql server. ? I dont know is it possible or not.

is this software sifficient :

ADONETDataServices_v15_CTP1.exe