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Thursday, 12 February 2015

Hide Or Show Gridview Row By Column Name at RunTime In Asp.Net Using C#.Net

2/12/2015 - By Pranav Singh 0

This article will show you how you hide or show gridview row by column name at runtime in asp.net using c#.net. In this we will display to bind value total at run time in asp.net using c#.net.


So for this article first we will create a new asp.net application and add the below code in the page.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Hide Or Show Gridview Column By Column Name at RunTime In Asp.Net Using C#.Net
    </title>
</head>
<body>
    <form id="form1" runat="server">
    <table width="100%" cellpadding="4" cellspacing="4">
        <tr>
            <td align="left">
                <asp:GridView ID="GridView1" runat="server" Width="100%" AutoGenerateColumns="False"
                    ShowFooter="True" OnRowDataBound="GridView1_RowDataBound">
                    <Columns>
                        <asp:TemplateField HeaderText="Name">
                            <ItemTemplate>
                                <asp:Label ID="lblName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
                            </ItemTemplate>
                            <FooterStyle Font-Bold="True" />
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Address">
                            <ItemTemplate>
                                <asp:Label ID="lblNamAddress" runat="server" Text='<%# Eval("Address") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Type">
                            <ItemTemplate>
                                <asp:Label ID="lblUserType" runat="server" Text='<%# Eval("UserType") %>'></asp:Label>
                            </ItemTemplate>
                            <FooterStyle HorizontalAlign="Right" />
                        </asp:TemplateField>
                        <asp:TemplateField HeaderText="Earning">
                            <ItemTemplate>
                                <asp:Label ID="lbltotal" runat="server" Text='<%# Eval("Earning") %>'></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>
                    </Columns>
                </asp:GridView>
            </td>
        </tr>
    </table>
    </form>
</body>
</html>

In above code I have use itemtemplate to bind the gridview fields and used label control to display the value using Eval. In this i have provided value to each and every header. I will detect the header and make it hidden at run time.

Now check the code to bind and display no of pages.

using System;
using System.Data.SqlClient;
using System.Data;
using System.Linq;
using System.Web.UI.WebControls;
using System.Collections;
namespace WebApplication1
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        DataTable objdt = new DataTable();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                GetDistinctValue();
            }
        }
        private void GetDistinctValue()
        {
            SqlConnection con = new SqlConnection(System.Configuration.
ConfigurationManager.ConnectionStrings["con"].ToString());
            try
            {

                string query = "select * from UserDetail;";
                SqlDataAdapter da = new SqlDataAdapter(query, con);
                con.Open();
                da.Fill(objdt);
                con.Close();
                if (objdt.Rows.Count > 0)
                {
                    GridView1.DataSource = objdt;
                    GridView1.DataBind();
                }
            }
            catch
            {
                con.Close();
            }
        }

        protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            string columnName = "Earning";
            var columnToHide = GridView1.Columns.Cast<DataControlField>().FirstOrDefault(m => m.HeaderText == columnName);
            if (columnToHide != null)
            {
                //True for Show and False for Hide
                columnToHide.Visible = false;
            }
        }
    }
}

On above code I have used a function to bind the data. Now I have I have added code to hide column by using . Now check the below code to hide the column at run time.

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            string columnName = "Earning";
            var columnToHide = GridView1.Columns.Cast<DataControlField>().FirstOrDefault(m => m.HeaderText == columnName);
            if (columnToHide != null)
            {
                //True for Show and False for Hide
                columnToHide.Visible = false;
            }
        }

In above code I have hide the linq query to hide the column by name. Now we have done run the application to check the output.

Here is the output without displaying hiding the column.



Here is the output with hidden column.


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