Asp.net Create Captcha with Refresh Button in C#, VB.NET

Introduction:

Here I will explain how to create captcha in asp.net using c#, vb.net or create captcha with refresh button in asp.net using c#, vb.net.

Description:
  
In previous posts I explained group columns in asp.net gridview header row, jQuery change tooltip style in asp.net, C# add rows from one datatable to another datatable, asp.net get all files from folder and display it in gridview and many articles relating to Asp.net, Gridview, c#, vb.net. Now I will explain how to create captcha in asp.net using c#, vb.net.

C# Regex to Replace All Special Characters with Space in String

Introduction: 

Here I will explain how to use regular expression or regex in c# to replace all special characters with space in string using c#, vb.net.

Description:

In previous articles I explained constructors in c#, polymorphism example in c#, delegates in c# with example, Difference b/w compile time and runtime polymorphism, sealed classes in c#.net and many articles relating to c#, vb.net, code snippets. Now I will explain how to replace all special characters in string with space in c#, vb.net.

Group Columns in Asp.net Gridview Header Row & Display Multiple Columns Under Single Column

Introduction:

Here I will explain how to group columns in asp.net gridview header row in C# and VB.NET or show multiple columns under single column in asp.net gridview.

Description:

In previous articles I explained Show Gridview row details in tooltip, Show tooltip for gridview header columns, jQuery change tooltip style in asp.net, Add tooltip to dropdownlist items in asp.net, Create simple tooltip with jQuery UI plugin, Asp.net Interview questions, Highlight Gridview records based on search and many articles relating to Gridview, SQL, jQuery,asp.net, C#,VB.NET. Now I will explain how to group columns in gridview in asp.net with C# and VB.NET.

C# - Xmldocument.load Invalid Character in the Given Encoding. line 23 position 5 in XSLT Compilation

Introduction:

Here I will explain how to solve the problem of “xmldocument.load invalid character in the given encoding in C#”.

Description:

In previous posts I explained many articles relating to solve errors in asp.net, SQL Server, IIS, etc. Now I will explain how to solve the problem of “xmldocument.load invalid character in the given encoding in SQL Server”.

C# - Add/Copy Rows from One Datatable to Another Datatable

Introduction:

Here I will explain simple code snippet in c# to add rows from one table to another table in vb.net, asp.net or copy rows from one datatable to another datatable in  c#, vb.net.

Description:

In Previous posts I explained using statement example in c#, Get all files from folder and subfolders in c#, Export webpage with images to pdf in asp.net and many articles relating to c#, vb.net, Asp.net, Gridview, SQL Server, Ajax, JavaScript etc. Now I will explain how to add rows from one table to another table in c#, vb.net, asp.net.  

To add rows from one table to another table we need to use ImportRow function like as shown below

C# - Using Statement Example | Uses of Using Statement in C#

Introduction:

In this article I will explain uses of using statement in c# and how to declare and use using statement in c#, vb.net, Asp.net.

Description:

In Previous posts I explained lot of articles regarding Asp.net, Gridview, SQL Server, Ajax, JavaScript etc. Now I will explain about using statement in c#.

Generally in our applications we will write code like create connection object to handle connectionstring after that open a connection and create command object etc. to interact with database to get data that would be like this

C# Get All Files from Folder and Subfolders & Display it in Gridview in asp.net

Introduction:

Here I will explain how to get all files from folder and subfolders in C# and display or bind to Gridview in asp.net using C#, VB.NET or C# Get All Files from Folder and Subfolders and Display it in Gridview in asp.net.

Description:

In previous articles I explained Download files from gridview with link button in asp.net, Upload images to folder and display it in gridview in asp.net, create zip files in asp.net, Delete files from uploaded folder in asp.net, create/delete directory in asp.net, Joins in SQL Server and many articles relating to Gridview, SQL , jQuery , asp.net, C#, VB.NET. Now I will explain how to get all files from folder and subfolders and bind to Gridview in asp.net using C#, VB.NET.

C# Get All Files from Directory and Subdirectories and Display it in Gridview

Introduction:

Here I will explain how to get all files from directory and subdirectories in C# and display or bind to Gridview in asp.net using C#, VB.NET.

Description:

In previous articles I explained create zip files in asp.net, Delete files from uploaded folder in asp.net, create/delete directory in asp.net, Joins in SQL Server and many articles relating to Gridview, SQL , jQuery , asp.net, C#, VB.NET. Now I will explain how to get all files from directory and subdirectories and bind to Gridview in asp.net using C#, VB.NET.

Redirect to Another Page in Handler in Asp.net using C#, VB.NET

Introduction: 

Here I will explain how to redirect to another page in handler (.ashx) file in asp.net. 

Description:

In previous articles I explained jQuery get set text to label, Get set asp.net control values in jQuery, jQuery Set Get textbox control value, jQuery get dropdown selected value & text, JavaScript create watermark text for textbox and many code snippets articles relating to JQuery, JavaScript, asp.net. Now I will explain how to redirect to another page in handler (.ashx) file in asp.net.

Asp.net Export WebPage with Images to PDF using iTextSharp in C#, VB.NET

Introduction:

Here I will explain how to export webpage with images to PDF in asp.net using iTextSharp in c#, vb.net.

Description:

In my previous articles I explained clearly Export gridview data to excel or word, Export gridview data to CSV file, Export Gridview data to pdf in asp.net, upload data from excel to sql server database, Export selected rows of gridview to excel/word and many articles relating to gridview, asp.net, c#, vb.net. Now I will explain how to export webpage with images to PDF in asp.net using iTextSharp in c#, vb.net.

jQuery Show Gridview Row Details in Tooltip on MouseHover in Asp.net

Introduction:

Here I will explain how to show gridview row details in tooltip on mouseover with jQuery using asp.net in C# and VB.NET.

Description:

In previous articles I explained Show tooltip for gridview header columns, jQuery change tooltip style in asp.net, Add tooltip to dropdownlist items in asp.net, Create simple tooltip with jQuery UI plugin, Asp.net Interview questions, Highlight Gridview records based on search and many articles relating to Gridview, SQL, jQuery,asp.net, C#,VB.NET. Now I will explain how to show gridview row details in tooltip on mouseover using jQuery in asp.net with C# and VB.NET.

To show gridview row details in tooltip on mouseover with jQuery we need to write the following code in aspx page

C# - Convert Datatable to JSON String in C#, VB.NET

Introduction:

Here I will explain how to convert asp.net datatable to JSON string in C#, VB.NET or How to get JSON string from Datatable in in C#, VB.NET

Description:

In previous posts I explained convert datatable to xml in asp.net, Convert datatable/dataset to arraylist, convert xml string to datatable in c#, asp.net, C#, SQL Server Interview Questions, send gridview as email body, upload and download files from gridview and many articles relating to asp.net, C#, VB.NET code snippets. Now I will explain how to convert datatable to JSON string in asp.net using C#, VB.NET.

To convert datatable to JSON string we need to write the code like as shown below

Get Title and Description of URL in Asp.net Like Facebook

Introduction

Here I will explain how to get title & meta description of url in asp.net using C# and VB.NET or get page title and description from page url in asp.net using HTMLAgilityPack in C# and VB.NET.

Description

In previous articles I explained jQuery Get Current Page url & title, Get url parameter values using jQuery, jQuery Dropdown menu with CSS, Asp.net Interview questions, Send values from one page to another page using QueryString, Highlight Gridview records based on search and many articles relating to Gridview, SQL, jQuery,asp.net, C#,VB.NET. Now I will explain how to get title & description of url in asp.net using C# and VB.NET.

Asp.net Show Multiple Markers on Google Map V3 from Database with JavaScript

Introduction:

Here I will explain how to show  or add multiple markers to Google maps V3 from database in asp.net website using JavaScript or JavaScript Show multiple markers in Google maps using database in asp.net.

Description:

In previous article I explained clearly how to add Google map to website in asp.net, Add marker to Google map in asp.net website, JavaScript Add multiple markers to google map, jQuery image slideshow in asp.net, Sitemap navigation control example in asp.net and many articles relating to jQuery, JavaScript, asp.net. Now I will explain how to add multiple markers to Google maps from database in asp.net website.

Move Selected Gridview Rows to Another Gridview in Asp.net

Introduction:

Here I will explain how to move or transfer selected checkbox gridview rows to another gridview in asp.net using c#, vb.net or copy one gridview row to another gridview in asp.net using c#, vb.net.

Description:

In previous posts I explained Display images in gridview from database in asp.net, Enable/Disable checkbox in gridview based on condition, asp.net gridview examples and bind data to textbox control in gridview, Bind data to dropdownlist  in gridview and many articles relating to asp.net, c#, vb.net, c#, vb.net. Now I will explain how to move selected rows from one gridview to another gridview in asp.net using c#, vb.net.

Display Images in Asp.net Gridview from Database in C#, VB.NET

Introduction: 

Here I will explain how to display images in gridview from database in asp.net using C#, VB.NET or show images from SQL Server Database in asp.net gridview using C#, VB.NET.

Description:
  
In previous articles I explained create database schema diagram in SQL Server, Resize Image without losing image quality in asp.net, asp.net save dynamically created controls values in database and many articles relating to SQL Server, asp.net, gridview, C#, VB.NET.

To display images in gridview from database check below articles

C# - Get Files from Folder / Directory & bind to Asp.net Gridview in C#, VB.NET

Introduction:

Here I will explain how to get files from folder or directory and bind to Gridview in asp.net using C#, VB.NET.

Description:

In previous articles I explained create zip files in asp.net, Delete files from uploaded folder in asp.net, create/delete directory in asp.net, Joins in SQL Server and many articles relating to Gridview, SQL ,jQuery,asp.net, C#,VB.NET. Now I will explain how to get files from folder and bind to Gridview in asp.net using C#, VB.NET.

Asp.net Download Multiple Files as Zip File From Gridview in C#, VB.NET

Introduction:

Here I will explain how to download multiple files as zip files archive from server using asp.net Gridview in C#, VB.NET or upload & download multiple selected files as zip archive file from asp.net Gridview in C#, VB.NET.

Description:

In previous articles I explained create zip files in asp.net, unzip files from folder in asp.net, Get Gridview row values when checkbox selected in asp.net, Delete files from uploaded folder in asp.net, create/delete directory in asp.net and many articles relating to Gridview, SQL, jQuery, asp.net, C#, VB.NET. Now I will explain how to upload and download multiple files as zip files folder from server in asp.net using C#, VB.NET.

To implement this first we need to get Ionic.Zip.dll from DotnetZIP Library for that check this link Ionic.Zip.dll or you can get it from attached downloadable code. Now you need to add that dll to your application bin folder for that check below steps