Add Number System project in VB .NET with source code and document.

Access Database connect in to C# Login page 01. First create a windows application from on the visual C#, 02. Crate new windows form application 03. And then double click the form, it’s taking in to the code view 04. From on the code ADD a namespace using System.Data.OleDb; 05. And under the Form_ Load create OleDb connation a. OleDbConnection Connection = new OleDbConnection(); 06. And the continually create the Access Data base connection String into this windows Form a. Connection.ConnectionString = @""; 07. In between the Double quotation “ ” have to inset the Access database connection String, NOTE: You can find the Whole database connection strings are from on this https://www.connectionstrings.com/ from on this website choose the Access Database connection string Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersThusianDocumentsDatabase1.accdb; Persist Security Info=False;"; From on the Source= have to set the Access database file full- path 08. The set the connection open at the same time have to write code for close a. Connection.Open(); b. Connection.Close(); (In-between this open and close you can write the logic and quarries you needed) Here for connection testing I’m inserting a label from on the windows form and writing the code in-between connection Connection.Open(); label1.Text = "Connection successfull"; Connection.Close(); 09. And all these taking in to a try catch part From in the Message Box Message mentioned “Errors” 10. Successfully connect the Access database in C#. 01. Login form creations a. First we already set the Access database variables in below the Form1_load but here we are going to use some other extra Forms on this projects so you have to Set Oeld Connection variables as Global its mean have to declare Under the public partial class Form1 : Form As Private like below:- private OleDbConnection Connection = new OleDbConnection(); *(If we did this no need to do again this form we can call it whenever we needed) At the sometime have to set the connections only for the one form this is under the InitializeComonent public Form1() { InitializeComponent(); OleDbConnection Connection = new OleDbConnection(); } And design the Login form And double click login Button And need to call connection open and close Connection.Open(); Connection.Close(); In between this connection you have to write the Odel command and set the quarry from the Access data base you were created earlier. Like below showing : The Total codes. For login page  Cont... Next page Insert Data into an Access Database with C# langue From on this application first create a login form and then create one more form from the visual C# windows application form this form have to design for a registration form. 01. First create a windows application from on the visual C#, (For login form) 02. Crate new windows form application 03. And then double click the form, it’s taking in to the code view 04. From on the code ADD a namespace using System.Data.OleDb; 05. And under the Form_ Load create OleDb connation a. OleDbConnection Connection = new OleDbConnection(); This Connection have to create as a Global variable (Below the form class) 06. And the continually create the Access Data base connection String into this windows Form a. Connection.ConnectionString = @""; 07. In between the Double quotation “ ” have to inset the Access database connection String, NOTE: You can find the Whole database connection strings are from on this https://www.connectionstrings.com/ from on this website choose the Access Database connection string Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:UsersThusianDocumentsDatabase1.accdb; Persist Security Info=False;"; From on the Source= have to set the Access database file full- path Then after you have to create the quarries to insert the data in to the Access database. This this under the Save button Click event And for the close button private void button2_Click(object sender, EventArgs e) { this.Close();

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