wati.io chatbot for whatsapp documentation

 https://docs.wati.io/reference/post_-serverurl-api-v1-updatecontactattributes-whatsappnumber

An introduction to Jquery.

 Jquery is a javascript library. Simple syntax of Jquery.

----------------------------**************----------------------------

<!DOCTYPE html>

<html>

<head>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

<script>

$(document).ready(function(){

  $("p").click(function(){

    $(this).hide();

  });

});

</script>

</head>

<body>

<p>If you click on me, I will disappear.</p>

<p>Click me away!</p>

<p>Click me too!</p>

</body>

</html>

An introduction to node.js. - How to download NPM

 When you download install Node JS it will install NPM

• Node.js is an open source server environment
• Node.js is free
• Node.js runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.)
• Node.js uses JavaScript on the server

Node.js uses asynchronous programming!

And download node.js from https://nodejs.org/en/download

reference:- https://www.w3schools.com/nodejs/default.asp

How to download mongodb database. An intro to mongodb database

MongoDB is not a SQL database, it is a document database.

Download  Mongodb compass (The GUI for MongoDB)

https://www.mongodb.com/try/download/compass

Also you have to download mongodb community.

https://www.mongodb.com/try/download/community

-------------------****************---------------------

Also you can use MongoDB Atlas for cloud database.

---------------------***************-----------------------

In mangodb, you can say, collections are your tables.

And documents are your data(records)

-----------------------

To find the data in filter(in mongodb compass), enter below code

{ Country: "Brazil" }

and click on find.

------------------------------***********************---------------------------

Mongodb tutorials :- https://docs.mongodb.com/compass/current/query/filter/

Creating Login logic for asp.net C# and Stored procedure for finding Login and password

 

1. Create procedure [dbo].[spLogin]  
2. (  
3. @Email nvarchar(50),  
4. @Password nvarchar(50)  
5. )  
6. as  
7. begin  
8. Select COUNT(*) from UserRegistration where Email=@Email and Password=@Password   
9. end  
10. ---------------------------------
11. Clicking on Login button
12. 
    
13. protected void btnLogin_Click(object sender, EventArgs e)  
14.         {  
15.               
16.             string CS = ConfigurationManager.ConnectionStrings["DBCS"].ConnectionString;  
17.             using (SqlConnection con=new SqlConnection(CS))  
18.             {  
19.                 SqlCommand cmd = new SqlCommand("spLogin", con);  
20.                 cmd.CommandType = CommandType.StoredProcedure;  
21.                 con.Open();  
22.                 cmd.Parameters.AddWithValue("@Email",txtEmail.Text.Trim());  
23.                 cmd.Parameters.AddWithValue("@Password", Decrypt(txtPassword.Text.Trim()));  
24.                 int Username = (Int32)cmd.ExecuteScalar();  
25.                 if (Username == 1)  
26.                 {  
27.                     Session["Username"] = txtEmail.Text;  
28.                     Response.Redirect("Welcome.aspx");  
29.                     Session.RemoveAll();  
30.                       
31.                 }  
32.                 else  
33.                 {  
34.                     lblMessage.ForeColor = System.Drawing.Color.Red;  
35.                     lblMessage.Text = "Invalid username and password";  
36.                 }  
37.             }  
38.         } 
39. reference:- https://www.c-sharpcorner.com/blogs/how-to-login-with-encrypted-password-in-asp-net
40. https://www.c-sharpcorner.com/blogs/how-to-create-user-registration-form-with-encrypted-password-using-asp-net#ReadAndPostComment