Get Rid of  White Flash when iframe Loads:
                                                               To avoid white background while iframe loads, you can hides iframe until its fully loaded. You can use the following code snippets to hide iframe when its loading.

<iframe style="visibility:hidden;" onload="this.style.visibility = 'visible';" src="../iframe.html" > </iframe>

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Get image size in Kb in asp.net using c#:
                                                            Use FileInfo and the Length property to measure file size.  Here is the code for  get the file size in your C# program easily.
The blow sample contain code for get image size in KB and MB.

  FileInfo fileInfo = new FileInfo(Server.MapPath("~/Images/Header.jpg"));
            double fileSizeKB = fileInfo.Length / 1024;
            double fileSizeMB = fileInfo.Length / (1024 * 1024);

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Encryption/Decryption of a file/string using C#:
                                                   You can use the following code for Encryption/Decryption of a file or  a string. Here you can Encrypt /Decrypt a file  or a string by using the following methods. You just pass parameters as input in to that methods and you got suitable output.
Decrypt File-to-File
Encrypt File-to-File
Encrypt String-to-File
Decrypt File-to-String
Code:

using System;
using System.Collections.Generic;
using System.Text;
using System.Security.Cryptography;
using System.IO;

namespace BHI.Rats
{
    /// <summary>
    /// RatsEncryptionManager is responsible for encrypting and decrypting the files.
    /// </summary>
    public static class  RatsEncryptionManager
    {
        private const string passKey = "c0ntr0l1";

        /// <summary>
        /// Decrypts the input file (strInputFileName) and creates a new decrypted file (strOutputFileName)
        /// </summary>
        /// <param name="strInputFileName">input file name</param>
        /// <param name="strOutputFileName">output file name</param>
        public static void DecryptFiletoFile(string strInputFileName, string strOutputFileName)
        {
            string strFileData = "";
            using (FileStream inputStream = new FileStream(strInputFileName, FileMode.Open, FileAccess.Read))
            {
                DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();

                cryptic.Key = ASCIIEncoding.ASCII.GetBytes(passKey);
                cryptic.IV = ASCIIEncoding.ASCII.GetBytes(passKey);

                CryptoStream crStream = new CryptoStream(inputStream, cryptic.CreateDecryptor(), CryptoStreamMode.Read);

                StreamReader reader = new StreamReader(crStream);

                strFileData = reader.ReadToEnd();

                reader.Close();
                inputStream.Close();
            }

            if (File.Exists(strOutputFileName))
            {
                File.Delete(strOutputFileName);
            }
            using (StreamWriter outputStream = new StreamWriter(strOutputFileName))
            {
                outputStream.Write(strFileData, 0, strFileData.Length);

                outputStream.Close();
            }

        }
        /// <summary>
        /// Encrypts the input file(strInputFileName) and creates a new encrypted file(strOutputFileName)
        /// </summary>
        /// <param name="strInputFileName">input file name</param>
        /// <param name="strOutputFileName">output file name</param>
        public static void EncryptFiletoFile(string strInputFileName, string strOutputFileName)
        {
            byte&#91;] fileBuffer;

            using (FileStream inputStream = new FileStream(strInputFileName, FileMode.Open, FileAccess.Read))
            {
                fileBuffer = new byte&#91;inputStream.Length];

                inputStream.Read(fileBuffer, 0, fileBuffer.GetLength(0));


                inputStream.Close();
            }
            if (File.Exists(strOutputFileName))
            {
                File.Delete(strOutputFileName);
            }
            using (FileStream outputStream = new FileStream(strOutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
            {
                DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();

                cryptic.Key = ASCIIEncoding.ASCII.GetBytes(passKey);
                cryptic.IV = ASCIIEncoding.ASCII.GetBytes(passKey);

                CryptoStream crStream = new CryptoStream(outputStream, cryptic.CreateEncryptor(), CryptoStreamMode.Write);

                crStream.Write(fileBuffer, 0, fileBuffer.Length);

                crStream.Close();
            }
        }
        /// <summary>
        /// Encrypts the input string and creates a new encrypted file(strOutputFileName)
        /// </summary>
        /// <param name="strInputString">input string name</param>
        /// <param name="strOutputFileName">output file name</param>
        public static void EncryptStringtoFile(string strInputString, string strOutputFileName)
        {
            if (File.Exists(strOutputFileName))
            {
                File.Delete(strOutputFileName);
            }
            using (FileStream outputStream = new FileStream(strOutputFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite))
            {
                DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();

                cryptic.Key = ASCIIEncoding.ASCII.GetBytes(passKey);
                cryptic.IV = ASCIIEncoding.ASCII.GetBytes(passKey);

                CryptoStream crStream = new CryptoStream(outputStream, cryptic.CreateEncryptor(), CryptoStreamMode.Write);

                byte&#91;] buffer = ASCIIEncoding.ASCII.GetBytes(strInputString);

                crStream.Write(buffer, 0, buffer.Length);

                crStream.Close();
            }
        }
        /// <summary>
        /// Decrypts the input file (strInputFileName) and creates a new decrypted file (strOutputFileName)
        /// </summary>
        /// <param name="strInputFileName">input file name</param>
        public static string DecryptFiletoString(string strInputFileName)
        {
            string strFileData = "";
            using (FileStream inputStream = new FileStream(strInputFileName, FileMode.Open, FileAccess.Read))
            {
                DESCryptoServiceProvider cryptic = new DESCryptoServiceProvider();

                cryptic.Key = ASCIIEncoding.ASCII.GetBytes(passKey);
                cryptic.IV = ASCIIEncoding.ASCII.GetBytes(passKey);

                CryptoStream crStream = new CryptoStream(inputStream, cryptic.CreateDecryptor(), CryptoStreamMode.Read);

                StreamReader reader = new StreamReader(crStream);

                strFileData = reader.ReadToEnd();

                reader.Close();
                inputStream.Close();
            }

            return strFileData;
        }
    }
}

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Create buttons with pure css:

The following buttons created by using only css. But it look like  an image button, here you can see a fading effect while mouse over the button. You can copy and use bellow code for css button with fading effect

<style type="text/css">
            .button {
                font:normal 18px sans-serif;
                text-decoration:none;
                padding:2px 12px 3px 12px;
                cursor:pointer;
                position:relative;
                overflow:hidden;
                vertical-align:middle;
                margin:0 8px;
            }
            a.button {
                display:inline-block;
                padding:3px 14px 4px 14px;
            }
            .button span {
                position:relative;
            }
            .style {
                color:#92c564;
                border:1px solid #111;
                background:#2e2f31;
                background:-moz-linear-gradient(top, #45494d, #161616);
                background:-webkit-gradient(linear, left top, left bottom, from(#45494d), to(#161616));
                text-decoration:none;
                -moz-border-radius:4px;
                -webkit-border-radius:4px;
                -moz-box-shadow:rgba(0,0,0,.4) 0 0 8px;
                -webkit-box-shadow:rgba(0,0,0,.4) 0 0 8px;
                text-shadow:rgba(255,255,255,.6) 0 0 16px;
                -moz-transition:all .2s linear;
                -webkit-transition:all .2s linear;
            }
            .style span {
                position:relative;
                z-index:1;
            }
            .style .gradient {
                display:block;
                width:280%; height:280%;
                position:absolute;
                bottom:-150%;
                left:-10%;
                background:-moz-radial-gradient(center center, ellipse cover, rgba(255,255,255,0), rgba(255,255,255,0) 60%, rgba(255,255,255,.15) 61%, rgba(255,255,255,0));
                background:-webkit-gradient(radial, 112 128, 0, 112 128, 196, from(rgba(255,255,255,0)), color-stop(60%, rgba(255,255,255,0)), color-stop(61%, rgba(255,255,255,.15)), to(rgba(255,255,255,0)));
                z-index:4;
            }
            button.style .gradient {
                bottom:-145%;
                left:-17%;
                background:-moz-radial-gradient(center center, ellipse cover, rgba(255,255,255,0), rgba(255,255,255,0) 60%, rgba(255,255,255,.14) 61%, rgba(255,255,255,0));
            }
            .style:hover, .style:focus {
                color:#c5e4a9;
                text-shadow:rgba(255,255,255,1) 0 0 12px;
            }
        </style>

You can call the css class for any links and buttons in your page.

  <input value="Input" class="button style" type="button">
        <button class="button style"><b class="gradient"></b><span>Button</span></button>
        <a href="#" class="button style"><b class="gradient"></b><span>Anchor</span></a>

Live Sample:(Mouse over to feel difference)

  Anchor

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Some Important  SQL Queries:

                                     The following SQL queries  are very much used to my one of  a stored procedure based .net project. It may useful you too.

Get stored procedure count from a sql table:

SELECT count(*) SPCOUNT FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE='PROCEDURE'

Get number of function from a sql table:

SELECT count(*) FUNCTIONCOUNT FROM INFORMATION_SCHEMA.ROUTINES
WHERE ROUTINE_TYPE='FUNCTION'

Get all stored procedure name from a sql table:

SELECT name AS spname
FROM sysobjects
WHERE (xtype = 'p') AND (name NOT LIKE 'dt%')
ORDER BY name 

Get all table name in a sql database:

Select table_name from information_schema.tables
where table_type='Base table' order by table_name 

Get stored procedure(s) for a sql table:

SELECT DISTINCT so.name
FROM syscomments sc
INNER JOIN sysobjects so ON sc.id=so.id
WHERE sc.TEXT LIKE '%table name%'

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C# File.Exists Method:

Exists method of the System.IO.File class can be used to check if a file exists in a given location.

Code:

private static bool IsFileExists(stringsFileName){
 try
 {
   if (File.Exists(sFileName) == true)
   {
     return true;
   }
   else
   { 
     return false;
   }
 }
 catch (Exception ex)
 {
   Console.WriteLine(ex.Message);
   return false;
 }
}

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