Asp.net send email using c#

Introduction:

In this article I will explain how to send email using asp.net.

Description:

In realtime we will use gmail,yahoo,hotmail etc to send mails to particular user here I will show to how to implement mail sending concept in asp.net.

To implement mail concept in asp.net first we need to add following reference to our application System.Web.Mail namespace 

What is System.Web.Mail

System.Web.Mail is a namespace which contains classes that enable us to construct and send messages using the CDOSYS (Collaboration Data Objects for Windows 2000) message component. The mail message is delivered either through the SMTP mail service built into Microsoft Windows 2000 or through an arbitrary SMTP server.

How we can get this reference (System.Web.Mail)

How to disable button after click or during postback and how to change button text after click or during postback in asp.net

Introduction

Here I will explain how to disable button after click or during postback and I will explain how to change the button text after click on button or during postback in asp.net

Description

In many websites we will see disable of button after click on that for getting some content how we can implement that in our application.

Here we need to observe one point that is how we can findout button click and how we can disable button and how we can change text of button during postbacks in asp.net. Here we have chance to get postsbacks by using these statements

SQL Query to get records with or without null values from database

Introduction

Here I will explain how to write a query to retrieve records with or without null values from database in SQL Server.

Description

I have one table with three fields like this 

UserId	Name	City	Education
1	Suresh	Guntur	B.Tech
2	Nagaraju	NULL	MCA
3	Sai		MBA
4	Madhav	NULL	MBBS

Now I need to retrieve records from this table where City not null in this situation I have written query like this.

Query to get only date from datetime in sql server like dd/mm/yyyy, mm/dd/yyyy, yyyymmdd, dd-mm-yyyy etc

Introduction

Here I will explain how to convert or get only date from datetime in different formats like like dd/mm/yyyy, mm/dd/yyyy, yyyymmdd, dd-mm-yyyy etc in SQL Server.

Description

In many situations I got requirement like changing datetime to date and changing the date format to different ways like dd/mm/yyyy or mm/dd/yyyy or dd.mm.yy or yy.mm.dd. We can covert our datetime to date with different formats using different styles. I will display different format of dates with samples check it 

JavaScript make some text non editable - know position of cursor in textbox and disable delete and BackSpace options in keyboard

Introduction

Here I will explain how to make some text non editable in textbox and how to know position of cursor in textbox and how to disable delete and BackSpace buttons in keyboard using JavaScript.

Description

Here I have one country dropdown and one textbox based on the selection of country from dropdown I need to display country codes in textbox. After that user enter mobile number here my requirement is user can edit his mobile number but I don’t want to give chance to edit country code in textbox for that requirement I have written below code

Write following code in your aspx page and check