Gridview inheriting properties

1 - Creating a class library to inherit from class GridView and put your settings by default

Create a class library project and place this code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Default.WebControl
{
    [ControlValuePropertyAttribute("SelectedValue")]
    [ToolboxData("GridViewDefault")]
    public class GridViewDefault : GridView
    {
        public GridViewDefault()
        {
            this.GridLines = GridLines.Both;
            this.CellPadding = 5;
            this.CellSpacing = 6;
            this.Width = new Unit("100%");
        }
    }
}

After this creation of the library class, refer to your web project through the Add Reference

Indicatingaiyourclasslibrary.Nowconfigurethepolicyinyourprojectasfollows:

<%@RegisterNamespace="Default.WebControl" Assembly="Default.WebControl" TagPrefix="asp" %>

And then you can usually use the new GridView created realize:

CompletecodeAspx:

<%@PageTitle="About" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="About.aspx.cs" Inherits="WebApplicationForms.About" Debug="true" %>
<%@ Register Namespace="Default.WebControl" Assembly="Default.WebControl" TagPrefix="asp" %>
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
    <h2><%: Title %>.</h2>
    <h3>Your application description page.</h3>
    <p>Use this area to provide additional information.</p>
    <asp:GridViewDefault ID="GridViewDefault1" runat="server"></asp:GridViewDefault>       
    <asp:Button ID="BtnAtualizar" OnClick="BtnAtualizar_Click" runat="server"  />
</asp:Content>

With extensive method you can even put together several configurations and make a call in Page Load.

2 - Create a class with modifier static with a method also with modifier static like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace System.Web.UI.WebControls
{
    public static class Methods
    {
        public static void RenderConfiguration(this GridView grid)
        {
            grid.GridLines = GridLines.Both;
            grid.CellPadding = 5;
            grid.CellSpacing = 6;
            grid.Width = new Unit("100%");
        }
    }
}

Note: Follow this code example only by changing the part of the internal configuration using your own settings.

No Load:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplicationForms
{
    public partial class About : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                GridView1.RenderConfiguration(); // chamando configuração padrão!
                GridView1.DataSource = new object[]{
                    new {Id = 1, Nome = "GridView 1"},
                    new {Id = 2, Nome = "GridView 2"},
                    new {Id = 3, Nome = "GridView 3"},
                    new {Id = 4, Nome = "GridView 4"},
                    new {Id = 5, Nome = "GridView 5"}
                };
                GridView1.DataBind();
            }
        }
    }
}

3 - You can also use a static method by reference, like this:

using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace System.Web.UI.WebControls
{
    public static class Methods
    {        
        public static void RenderConfiguration(ref GridView grid)
        {
            grid.GridLines = GridLines.Both;
            grid.CellPadding = 5;
            grid.CellSpacing = 6;
            grid.Width = new Unit("100%");
        }
    }
}

No Load:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplicationForms
{
    public partial class About : Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {                
                Methods.RenderConfiguration(ref GridView1); // chamando por referencia
                GridView1.DataSource = new object[]{
                    new {Id = 1, Nome = "GridView 1"},
                    new {Id = 2, Nome = "GridView 2"},
                    new {Id = 3, Nome = "GridView 3"},
                    new {Id = 4, Nome = "GridView 4"},
                    new {Id = 5, Nome = "GridView 5"}
                };
                GridView1.DataBind();
            }
        }
    }
}