Gridview inheriting properties

Question

In all my grid s I have to define many properties, I wonder if there is any way to define the properties only at one time in a single place.

Grid example:

Answer 1

1 - Creating a class library to inherit from the 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 make the reference in your web project through the menu Add Reference

Indicating your class library. Now configure in your project the directive as follows:

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

And then you can use the new Gridview created:

Complete code Aspx:

<%@ Page Title="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 assemble various settings and make a call in the Page Load.

2 - Create a class with modifier static with a method also with modifier static in that way:

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 example of code only by changing the part of the internal configuration through 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 - A method may also be used static by reference, thus:

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();
            }
        }
    }
}