If URL point to a URL, let say [URL]
I may want ASP.Net to handle the "sampleimage.gif", so that it can be fetched from database server, using HttpResponse.Write()
My question is how can IIS/ASP.Net recognize sampleimage.gif is actually pointing to a aspx page?
in previously asked question answeres said they dont get what i want to do exactly so heres is the full code also i simply want that instead of a TABLESe i rendered an image( of the content ) on the page
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Text;
using System.Data;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
System.Web.UI.WebControls.Panel panelmain = new System.Web.UI.WebControls.Panel();
System.Web.UI.WebControls.Literal abc = new System.Web.UI.WebControls.Literal();
abc.Text = "as<br/>dasdas<br/>dasdad";
DataSet ds = new DataSet();
DataTable dt;
DataRow dr;
DataColumn idCoulumn;
DataColumn nameCoulumn;
dt = new DataTable();
idCoulumn = new DataColumn("ID", Type.GetType("System.Int32"));
nameCoulumn = new DataColumn("Name", Type.GetType("System.String"));
dt.Columns.Add(idCoulumn);
dt.Columns.Add(nameCoulumn);
dr = dt.NewRow();
dr["ID"] = 1;
dr["Name"] = "Name1";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["ID"] = 2;.............
In javascript I have an image which I set the .src at runtime in javascript. The .src points to a asp.net page with a few values as querystring parameteres that I want t capture on the server. this page has empty content. In code behind in the page load I need to generate the smallest image possible and return it as the response. how do I generate a small image and return it in the response?
View 3 RepliesIt cannot change image when i using response.redirect cod as below
on button event
Image.url="imagechange.gif"
Response.redirect("A.ZIP")
Is is possible to update an image on an HTML page using the response stream of an ASP.NET Generic Handler? For example, if I have the following code on a handler: [URL]
public void ProcessRequest (HttpContext context) {
context.Response.ContentType = "image/png";
context.Response.WriteFile("~/images/test.png");
}
How can I call the handler in jQuery, using .ajax, and set an image on the page equal to the image that is returned by the Handler? I am ignoring the query string variable at the moment as I just want to get this working. Secondly, if I can do above, how can I loop through all of DIVs on the page that are of class "content", select a guid out of a hidden field to use as my query string parameter, and update the associated image within the same content DIV tag? A content div tag would look as follows:
<div class="content">
<asp:TextBox runat="server" Id="HiddenField_1" Value="C142E68F-B118-4565-9A9E-B2347F0B6D5B"/>
<img src="#"/>
</div>
<div class="content">
<asp:TextBox runat="server" Id="HiddenField_2" Value="GJ38AD23-B118-4565-9A9E-B2347F0B6D5B"/>
<img src="#"/>
</div>
I would like to have all the images updated on a periodic interval, so essentially, as a quick recap, I would need to have: A loop through all of my DIVs of class "content", occuring every n. seconds. Extractation the GUID from the hidden field. A call to my ASHX handler to get the updated image. Set the returned image to the corrisponding image on the page. Is this something that would be difficult to achieve? If not, what would I need to do to make this function in the above manner?
Loading image is not moving in response.Redirect
View 1 RepliesConvert URL Response to Image or thumb nail
[Code]....
I'm using varbinarymax.....IN SQL gridview image and setting the nullimage value doesn't this problem.. I'm looking for code that can make this lil miracle happen
& it doesn't really matter which way , whether the code says if image null then display this image from ~/Images/thispic.jpg or if i1 display this image from ~/Images/thispic.jpg for a little bit more insight into this I'm creating a legend for the database and the null has been used for displaying one pic so i'm after the 1 or visa versa to display another image.... and i'm not trying to upload pics to 1000 plus documents, and when i came at it from a sql angle tying 5 tables together the parent table ended up not sending the proper return. is this even possible or am i ahead of visual studio
in pageload
{
panelmain.Controls.Add(abc);
panelmain.Controls.Add(grid1);
string toexport;
toexport = RenderControl(panelmain);
ImageFormatConverter imgc = new ImageFormatConverter();
System.Drawing.Image convertedimage;
convertedimage = (System.Drawing.Image) imgc.ConvertFromString(toexport);
Response.ContentType = "image/jpg";
Response.AppendHeader("Content-Disposition", "inline;filename=tm.jpeg");
Response.BufferOutput = true;
Response.Charset = "utf-8";
Response.Write(convertedimage);
Response.End();
//form1.Controls.Add(abc);
}
public string RenderControl(Control ctrl)
{
StringBuilder sb = new StringBuilder();
StringWriter tw = new StringWriter(sb);
HtmlTextWriter hw = new HtmlTextWriter(tw);
ctrl.RenderControl(hw);
Response.Write(sb);
return sb.ToString();
}
The error is: ImageFormatConverter cannot convert from System.String.
I wrote the following Code in my application where cmdCancel_Click is working fine and no response from cmdSave_Click,
Code:
Protected Sub cmdCancel_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Panel1.Visible = False
txtUserId.Text = ""
[code]...
I have a aspx form that accepts a integer in a text box and on submit button click, it fetches a result and displays in label.Is there any way to get this flow done through C# code.Means i'll send the input value via code to that url and get the response from that page. I gotta use the output from the link inside my web service for processing.
View 3 RepliesI want to check the status code for a web url without using the IP address as I have many websites configured with the same IP and only hostname is different for them. The HttpWebRequest resolves the IP Address and use it.
View 2 RepliesI had written a piece of code in MVC 1.0 and the Response.Redirect worked flawlessly.I now have a new application and I decided to use MVC 2.0 but that same piece of code is now not working. After the Response.Redirect is called, the code STILL continues to execute. I have not seen this in any version of ASP.NET until now. Usually, after Response.Redirect is called, execution of all code is stopped.
Why is this now happening and how do I fix this? this is very frustrating to me and I cannot seem to find a solution.
I've created 2 web user controls. A = User control that displays an image, and B is the user control that hosts A. I'm trying to stream an array of bytes to A, but it seems like the Response.BinaryWrite method completely overwrites any heirachial controls (I can't see any of B's other controls besides the image).
How do I get A to just display the image from the byte stream? It doesn't come from a database, it's an image I created on the fly.
A's code:
[Code]....
So in my website, I use jquery to fetch data through ajax. AS part of the ajax response, some of the javascript code comes as well which is executed. The problem is how to debug this javascript in firebug or other tools. This is my experience so far: putting debugger; doesn't work For some javascript, can't set the breakpoint as that script is not yet loaded. even if this new javascript calls some other function thats already loaded (i.e. i can see it in firebug and set a breakpoint), that breakpoint on that function is still not triggered
However, the javascript does executes normally and even things like console.log works but cant seem to debug it.
here is a legacy code which has following implementation Example1 and Example2.f we try to implement MSDN recommendation then the legacy code fails.
void Page_Load() {
if(condition) {
/// some condition
} else {
RedirectPage(url);
[code]...
I have some code in umbraco that is run and creates a javascript file for looking up there IP and sending them to the correct site for there language, now this worked but i'm trying to add an override system into it so a user of the site can force them self's out of the redirect using cookies but for some reason when i try to right the response it tells me that the Response local variable cant be used before it is set
<%@ Master Language="C#" MasterPageFile="/umbraco/masterpages/default.master" AutoEventWireup="true" Debug="true" %>
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.IO" %>
<asp:Content ContentPlaceHolderID="ContentPlaceHolderDefault" runat="server">
<script runat="server">
string getOutput(){
HttpCookieCollection MyCookieColl;
[Code].....
I am creating a web application that allows a user to download a csv file of a gridview. However, after looking at tutorials online such as http://www.aspsnippets.com/Articles/Export-GridView-To-Word-Excel-PDF-CSV-Formats-in-ASP.Net.aspxand such, I successfully got the table I wanted but there are HTML content appended to the table as well.There was also a similar problem being brought up on the forum,http://forums.asp.net/p/1528174/3692826.aspx. The solutions didn't help me much though. However, I am not really sure how Handlers can benefit this. Furthermore, I don't want the user to be navigated to a blank page just to download the csv file. I tried to debug and insert removal code to remove the html code before the response object is being wrote out but seems even at the end of the writing method, the response object seems to be holding just the table content only.
View 4 RepliesIn our ASP.NET web application, we use our own class to act as a rewrite module. It takes all requests to the server, acting as a bootstrapper.
To access an image on our web application, the browser requests domain.com/ResourceItem.aspx?Id=74
Does not having a proper URI mean the server will never respond with 304 NOT MODIFIED?
how to get the 304 response, so the browser doesn't have to download each image every refresh?
I'm rewriting a messaging module and the old asp application has a send button image and it used HTML submit button. My new application is asp.net. Can I use the asp send button image to response.redirect to the View message page?
View 3 RepliesIf I were to specify a page for redirect using the ASP.NET Custom Errors feature, would my application still spit out the HTTP status code for that particular error?
For example if had a line in my web.config that had all Internal Server Errors redirect to Errors/500.aspx and then I encountered a 500 error, I would then be redirected to my custom Errors/500.aspx page. Will my application still respond with a HTTP 500 at any point in this exchange?
i'm just getting started with asp.net and ajax. My question is : is it possible to make an ajax request and simulate the server response in the code behind. in other words can the request be sent to the code behind of the same page? if it's possible haw can i perform this ?
View 2 RepliesI want to return a response with type text/plain and status code 404. How do I do that? I've found that ContentResponse allows for setting response type but how do I set response status code?
View 2 RepliesI have a class...see code below
[Code]....
and I am calling the class using this syntax....
DataExporter.ExportToXLS(gvtemp,
string.Format("{0}.xls",
DateTime.Now.ToString("ddhhmmss")));
however, i am getting the exception, unable to evaluate expression because the code is optimized and usually, you fix it by adding a false to your response.redirect.
how can i set Title for a page with Response.ContentType = "image/jpeg" ?
View 2 Replies