ADO Wrapper Class C#

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Hi Everyone,
I want to convert my code to wrapper class so i can call it from all the project, and don't need to keep repeat it .

this is part of my code right now. i want to wrap the open connection ,DataTable

C#

protected void Page_Load(object sender, EventArgs e)
    {
        this.Master.HighlightMenu = "Customers";
        //Declare the connection object
        SqlConnection Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["MyLocal"].ConnectionString);

        //Make the connection 
        Conn.Open();

        //Define you query
        string sql = "SELECT * FROM Customer Order by LastName, FirstName";

        //Declare a SQL Adapter
        SqlDataAdapter da = new SqlDataAdapter(sql, Conn);

        //Declare a DataTable
        DataTable dt = new DataTable();

        //Populate the DataTable
        da.Fill(dt);

        //Bind the Listview
        lv.DataSource = dt;
        lv.DataBind();

        dt.Dispose();
        da.Dispose();
        Conn.Close();
    }

I tried like that but i don't know if it right or how to call it from any page.

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;


public class DB
{
    private SqlConnection sqlConn; 
	public DB()
	{
	}
public void OpenConnection()
{
    if (sqlConn == null)
    {
      sqlConn = new SqlConnection(ConfigurationManager.ConnectionStrings["MyLocal"].ConnectionString);
           sqlConn.Open();
    }
	
	else 
	{
		 sqlConn.Close();

	}

}

public DataTable RunQuery(string Sql)
{
    OpenConnection();
    
}

Posted 29-Mar-12 3:46am

Mike988

Updated 29-Mar-12 3:48am

v2

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2 solutions

Solution 2

Small example can be found here[^]

Posted 29-Mar-12 4:55am

Herman<T>.Instance

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El_Codero · Accepted Answer · 2012-03-29T03:57:00

C#

public class DB
    {
        public static SqlConnection Connect()
        {
            string connectionString = "Data Source=.;Initial Catalog = YourDatabaseName;uid =sa;pwd = YourPassword";
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                // Do something
                return connection;
            }
            
            
        }
    }

Good introduction to this topic:
http://msdn.microsoft.com/en-us/library/x9afc042.aspx[^]

http://msdn.microsoft.com/en-us/library/79b3xss3.aspx[^]

And the rest of the C# Programming Guide.

Regards