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Saturday, 30 April 2016

Short GridView Data From Header Using C#.Net In Asp.Net

4/30/2016 - By Pranav Singh 0

This article will show you how you can bind gridview with datatable and short gridview data in asp.net using c#.net.

So for this article first we will create a new asp.net application and the gridview control. After adding gridview control add the shorting event.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication4.WebForm1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Short GridView From Header Using C#.Net In Asp.Net</title>
</head>
<body>

    <form id="form1" runat="server">
        <div>
            <asp:GridView ID="GridView1" runat="server" AllowSorting="True" OnSorting="GridView1_Sorting"></asp:GridView>
            &nbsp;
        </div>
    </form>
</body>
</html>


Now we will enable the shorting the gridview.



After this we will add the shorting event



After adding the above code add the below code.

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

namespace WebApplication4
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            if (!IsPostBack)
            {
                dt = GetDataToBind();
                GridView1.DataSource = dt;
                GridView1.DataBind();
                ViewState["GridData"] = dt;
            }
        }
        /// <summary>
        /// Grid View data
        /// </summary>
        /// <returns></returns>
        public DataTable GetDataToBind()
        {
            DataTable dt = new DataTable("SaleData");
            dt.Columns.Add(new DataColumn("Month", typeof(string)));
            dt.Columns.Add(new DataColumn("Sale", typeof(int)));

            DataRow dr1 = dt.NewRow();
            dr1["Month"] = "Group 1";
            dr1["Sale"] = 10000;
            dt.Rows.Add(dr1);

            DataRow dr2 = dt.NewRow();
            dr2["Month"] = "Group 2";
            dr2["Sale"] = 34300;
            dt.Rows.Add(dr2);

            DataRow dr3 = dt.NewRow();
            dr3["Month"] = "Group 3";
            dr3["Sale"] = 23400;
            dt.Rows.Add(dr3);

            DataRow dr4 = dt.NewRow();
            dr4["Month"] = "Group 4";
            dr4["Sale"] = 30040;
            dt.Rows.Add(dr4);

            DataRow dr5 = dt.NewRow();
            dr5["Month"] = "Group 5";
            dr5["Sale"] = 342200;
            dt.Rows.Add(dr5);

            return dt;
        }
        /// <summary>
        /// Shorting event
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void GridView1_Sorting(object sender, GridViewSortEventArgs e)
        {
            DataTable dt = ViewState["GridData"] as DataTable;
            if (dt.Rows.Count > 0)
            {
                dt.DefaultView.Sort = e.SortExpression + " " + SortingDirection(e.SortExpression);
                GridView1.DataSource = dt;
                GridView1.DataBind();
            }
        }
        /// <summary>
        /// Get shorting direction
        /// </summary>
        /// <param name="columnName"></param>
        /// <returns></returns>
        private string SortingDirection(string columnName)
        {
            string sortDirection = "ASC";
            string sortExpression = ViewState["ColumnName"] as string;

            if (sortExpression != null)
            {
                if (sortExpression == columnName)
                {
                    string lastDirection = ViewState["Direction"] as string;
                    if ((lastDirection != null) && (lastDirection == "ASC"))
                    {
                        sortDirection = "DESC";
                    }
                }
            }
            ViewState["ColumnName"] = columnName;
            ViewState["Direction"] = sortDirection;
            return sortDirection;
        }
    }
}

In above code I have bid the gridview and after binding on shorting event of grid view I have detected the column name and detected what is the current status of the shorting.

 

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