Print C# properties in aspx,ascx page from code behind file.

Hello all

Today I will show you how to print something in aspx or ascx page from code behind file.In this example I have taken a “Web User Control” named “WebUserControl.ascx”. What I wanted to do was, print a value of a variable in “.ascx” page where the variable has been initialize from “.ascx.cs” better to say code behind file.

To do that we have taken a property in “WebUserControl.ascx.cs” code behind file named “PrintValue” and make it a public property and assign a string value on PageLoad event as bellow :

using System;

public partial class WebUserControl : System.Web.UI.UserControl
{
    public string PrintValue { get; set; }
    
    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack)
            PrintValue = "Postback";
        else
            PrintValue = "Not postback";
    }
}

Now I have printed the value of the property in my “WebUserControl.ascx” page as bellow.One thing we have to remember that the script tag should be like : <%= %> to print something in it.

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>

The page has - <%= PrintValue %>

Now we can use the control in our page to show the state of the page.
Thats all for today.
Bye

User ScrumPad for your Agile based projects.

File streaming in .NET

Hello All

Today i will focus on simple file steaming in .NET which I have to implement it in one of my project.Though it’s not optimize but its OK for serve small purpose.

In the project I have to read a PDF file from the server and with FileStream and Flash it with Response to the client side.

the code is as bellow.

private void generateRequestedPDF()
{
    try
    {
        string file = Path.GetFileName(Request.QueryString["RefID"]);// get file name from query string.use your custom method." 

        FileStream fileStream = new FileStream(Server.MapPath(@"~\uploadedFiles\" + file), FileMode.Open);
        long fileSize = fileStream.Length;

        byte[] buffer = new byte[(int)fileSize];
        fileStream.Read(buffer, 0, (int)fileSize);
        fileStream.Close();

        Response.Clear();

        Response.ContentType = "Application/pdf";// use your custom type"
        Response.AddHeader("Content-Disposition", "inline; filename=" + file);

        Response.OutputStream.Write(buffer, 0, (int)fileSize);
        Response.Flush();
        Response.Close();
    }
    catch (Exception exc)
    {
    //  throw exc;
        this.writeLogWarn(exc);
        Response.Redirect("~/Pages/Content/TechCorner.aspx");
    }
   
}

thats all for today.
BYE

User ScrumPad for your Agile based projects.