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How to Create Dynamic GridView Using BoundField

By Gohil Jayendrasinh on March 06, 2012
In this article we create a Gridview using a BoundField and also create paging functionality using EventHandler.
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Here I create a Gridview using a BoundField and also create a paging functionality using EventHandler.

Step1: Your .aspx page will look like:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="DynamicGridView.aspx.cs"
Inherits="DynamicGridView" %><!DOCTYPE html PUBLIC "
//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtm
1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<
head runat="server">
    <title></title>
</
head>
<
body>
    <form id="form1" runat="server">
    <div>
        <asp:PlaceHolder ID="PlaceHolder1" runat="server"></asp:PlaceHolder>
    </div>
    </form>
</
body>
</
html
>

Step 2 : Your .cs page looks like:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;

public partial class DynamicGridView : System.Web.UI.Page
{
    
DataHelper helper = new DataHelper();
    
List<Employee> emplist = new List<Employee>();
    
protected void Page_Load(object sender, EventArgs e)
    {
        CreateGridView();
    }
    
private void CreateGridView()
    {
        
GridView gv = new GridView();
        gv.ID = 
"EmployeeGridView";
        gv.AutoGenerateColumns = 
false;
        gv.AllowPaging = 
true;
        gv.EnableViewState = 
true;
        gv.PageSize = 10; 
// Default page Size

        
//Create EventHanfler for Paging.

        gv.PageIndexChanging += 
new GridViewPageEventHandler(this.gv_PageIndexChanging);
        helper = 
new DataHelper();
        emplist = helper.GetEmployeeData();
        
DataTable dt = new DataTable();
        
if (emplist != null)
        {
            
if (emplist.Count > 0)
            {
                dt = ListToDataTable(emplist);
 
//We convert List view to DataTable because we use the 
DataTable Column Name as a GridView Column Header.
                if (dt != null)
                {
                    
if (dt.Rows.Count > 0)
                    {
                        
for (int i = 0; i < dt.Columns.Count; i++)
                        {
                            
BoundField boundField = new BoundField();
                            boundField.DataField = dt.Columns[i].ColumnName.ToString();
                            boundField.HeaderText = dt.Columns[i].ColumnName.ToString();
                            gv.Columns.Add(boundField);
                        }
                    }
                }
            }
        }
        PlaceHolder1.Controls.Add(gv);
        BindGridView(gv, dt);
    }
    
private void BindGridView(GridView gv, DataTable dt)
    {
        gv.DataSource = dt;
        gv.DataBind();
    }
    
void gv_PageIndexChanging(Object sender, GridViewPageEventArgs e)
    {
        
GridView gv = (GridView)sender;
        gv.PageIndex = e.NewPageIndex;
        helper = 
new DataHelper();
        emplist = helper.GetEmployeeData();
        
DataTable dt = new DataTable();
        
if (emplist != null)
        {
            
if (emplist.Count > 0)
            {
                dt = ListToDataTable(emplist);
                
if (dt != null)
                {
                    
if (dt.Rows.Count > 0)
                    {
                        BindGridView(gv, dt);
                    }
                }
            }
        }
    }


    
//Convert List To DataTable.
    static DataTable ListToDataTable<T>(IEnumerable<T> list)
    {
        
var dt = new DataTable();
        
foreach (var info in typeof(T).GetProperties())
        {
            dt.Columns.Add(
new DataColumn(info.Name, info.PropertyType));
        }
        
foreach (var t in list)
        {
            
var row = dt.NewRow();
            
foreach (var info in typeof(T).GetProperties())
            {
                row[info.Name] = info.GetValue(t, 
null);
            }
            dt.Rows.Add(row);
        }
        
return dt;
    }
}

 

Your  output page like looks like:


first.jpg

second.jpg


third.jpg



Gohil Jayendrasinh

  6 + years’ experience in the Field of .NET. MCTS in ASP.NET 3.5MS Dynamic NAV Web Services, ASP.NET,Windows Form Application,WCF,Web Services,SQL SERVER 2005/2008 ,SSRS ,AJAX,javaScript,jQuery

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