Skip to main content

Print Functionality in ASPDOTNET



One of the most common functionality in any ASP.NET application is to print forms and controls.
In this article, I am going to show how can we achieve this print functionality in our asp.net application. For this, I created a PrintHelper class. In this class, I made a method 'PrintWebControl'. With this method we can print any server control alike GridView, DataGrid, Panel, TextBox etc.
This is my PrintHelper.cs

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Text;
using System.Web.SessionState;

/// <summary>
/// Summary description for PrintHelper
/// </summary>
public class PrintHelper
{
    public PrintHelper()
    {
        //
        // TODO: Add constructor logic here
        //
    }
    public static void PrintWebControl(Control ctrl)
    {
        PrintWebControl(ctrl, string.Empty);
    }

    public static void PrintWebControl(Control ctrl, string Script)
    {
        StringWriter stringWrite = new StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);
        if (ctrl is WebControl)
        {
            Unit w = new Unit(100, UnitType.Percentage); ((WebControl)ctrl).Width = w;
        }
        Page pg = new Page();
        pg.EnableEventValidation = false;
        if (Script != string.Empty)
        {
            pg.ClientScript.RegisterStartupScript(pg.GetType(), "PrintJavaScript", Script);
        }
        HtmlForm frm = new HtmlForm();
        pg.Controls.Add(frm);
        frm.Attributes.Add("runat", "server");
        frm.Controls.Add(ctrl);
        pg.DesignerInitialize();
        pg.RenderControl(htmlWrite);
        string strHTML = stringWrite.ToString();
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.Write(strHTML);
        HttpContext.Current.Response.Write("<script>window.print();</script>");
        HttpContext.Current.Response.End();
    }
}

Here, in this application, I created 2 pages. First is the default page of the content that I want to print.On the same page, I set a Print button also. When it will be clicked, it will redirect the user to the second page, named as 'Print.aspx'.

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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>Pring in ASP.NET</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button ID="btnPrint" runat="server" Text="Print" OnClick="btnPrint_Click" /><br />
            <asp:Panel ID="pnl1" runat="server">
                <table cellpadding="4" cellspacing="4" width="50%" align="center">
                    <tr>
                        <td align="center">
                            Fill all information
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="Label1" runat="server" Text="Email" Width="130px"></asp:Label>
                            <asp:TextBox runat="server"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="Label2" runat="server" Text="Name" Width="130px"></asp:Label>
                            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="Label6" runat="server" Text="Country" Width="130px"></asp:Label>
                            <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox>
                        </td>
                    </tr>
                    <tr>
                        <td>
                            <asp:Label ID="Label3" runat="server" Text="Mobile" Width="130px"></asp:Label>
                            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                        </td>
                    </tr>
                </table>
            </asp:Panel>
        </div>
    </form>
</body>
</html>

PrintImage1.JPG

Image 1.
Click event of 'print' button is:

protected void btnPrint_Click(object sender, EventArgs e)
    {
        Session["ctrl"] = pnl1;
        ClientScript.RegisterStartupScript(this.GetType(), "onclick", "<script language=javascript>window.open('Print.aspx','PrintMe','height=300px,width=300px,scrollbars=1');</script>");
    }
When, the 'Print' button is clicked,screen will be looking as under in the Image 2
PrintImage2.JPG

Image 2.
Following is the load event of this page, 'Print.aspx':


protected void Page_Load(object sender, EventArgs e)
    {
        Control ctrl = (Control)Session["ctrl"];
        PrintHelper.PrintWebControl(ctrl);
    }

Comments

Post a Comment

Popular posts from this blog

GRIDVIEW GROUPING

When displaying data, we sometimes would like to group data for better user experience or when displaying long list of hierarchal data, we would want to display them in a tree view kind of structure. There is more than way of doing this, but I am going to explain achieving this functionality using  AJAX Collapsible Panel Extender Control . Overview: I am going to use  Adventure Works  as datasource. Every product in  Production.Product  table belongs to a product sub category. We fetch handful of products and the sub categories they belong to from the database. Our objective is to list all the available sub categories and allow user to  expand/collapse  to look/hide the list of products belonging to each subcategory. Database Connection Added following entry under  connectionStrings  element in  web.config . < add   name = "Sql"   connectionString="Data Source=(local); Initial  Catalog = AdventureWorks ...
Post a Comment
Read more

GRIDVIEW ZOOM IMAGE

When you have images in your  GridView , you would most likely show them as thumbnails so as to not distort the whole layout. However user would want to look at the full image by clicking on the image or just hovering his mouse over it. In today’s applications, this is a basic requirement and there are just so many third party controls or plugins which would support this functionality. I am going do this conventional way using  javascript  way in this article.  On top of it, I am also going to explain how to get images from database using  HttpHandlers . Example: I am using  Adventure Works  as datasource. We fetch handful of products and bind them to the grid. When page is initially loaded, we retrieve products from Production . Product  table and bind them to the grid. We display some product attributes such as Product ID, Product Number, Product Name, List Price and product’s thumbnail. When user hover his mouse on the page, we fetch the f...
Post a Comment
Read more

Editing Child GridView in Nested GridView

Editing Child GridView in Nested GridView In this article we will explore how to edit child gridview in the nested gridview.   Let''s write some code. Step 1:  Add scriptmanager in the aspx page. < asp : ScriptManager   ID ="ScriptManager1"   runat ="server"   EnablePageMethods ="true"> </ asp : ScriptManager > Step 2:  Add below stylesheet for modal popup. < style   type ="text/css">        .modalBackground        {              background-color : Gray;              filter : alpha(opacity=80);              opacity : 0.5;       }        .ModalWindow        {     ...
Post a Comment
Read more