I use
System.Diagnostics.Process.Start("calc");
It works well on localhost, but when the project is deployed and I access the website and call the calculator, it does not work, nothing literally happens. No errors or so.
I expect the calculator to launch on the client machine. How can I do this?
Launching a process directly from a website is disallowed from the browser for security reasons. You need to write a browser plugin to perform this operation.
Please try some client side code.
Something like below
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script language="JavaScript">
function launchExecutable() {
var shellActiveXObject = new ActiveXObject("WScript.Shell");
shellActiveXObject.Run("C:\\Windows\\System32\\calc.exe", 1, false);
shellActiveXObject = null;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="Button1" type="button" onclick="launchExecutable();" value="button" />
</div>
</form>
</body>
</html>
Code not tested. Hope this may help you
Related
This is a ASP.NET page written in C#. I want to know how to run this code on browser. I don't have visual studio installed on my laptop. But I want to run this on my PC. Can anyone tell me how to do that ?
<% #Page Language="C#" %>
<!-- code section -->
<script runat="server">
private void convertoupper(object sender, EventArgs e)
{
string str = mytext.Value;
changed_text.InnerHtml = str.ToUpper();
}
</script>
<!-- Layout -->
<html>
<head>
<title> Change to Upper Case </title>
</head>
<body>
<h3> Conversion to Upper Case </h3>
<form runat="server">
<input runat="server" id="mytext" type="text" />
<input runat="server" id="button1" type="submit" value="Enter..." OnServerClick="convertoupper"/>
<hr />
<h3> Results: </h3>
<span runat="server" id="changed_text" />
</form>
</body>
</html>
That code won´t run without visual studio since it have code that must be run on the server. The only thing you can do is copy the code between HTML tag and save it to an HTML file. That will run but since you have logic on your server side your upper case wont work.
Nevertheless, you can use some online tool like https://dotnetfiddle.net/
DotNetFiddle. Change project type to 'Nancy'
You can't, you are missing too many things:
-.Net Framework
-IIS
-MetaData (from a base ASP.net project)
-DLL
What you need to understand is that Browsers only run HTML, CSS, and Javascript. The page you are linking have intermedia code that should be converted to those 3 (HTML, CSS, and Javascript) by a server that interprets the C# code.
You can try Fiddle(Nancy), but you would require the missing server code you are referring on that view.
I followed some examples in my ASP.NET 4.5 in C# book for Master Pages. So I made a more complex site using them, and it all works locally. But when I push it to my remote server, it is saying the file cannot be found. So I made a more basic master page in Visual Studio 2015 to check. And it works locally, but when pushed to the remote server, it still does not work. I couldn't find any answers online either. I've tried some different urls thinking I was using the wrong url too. I've used
myWebSite.com/TestFolder/MasterPage.master
myWebSite.com/TestFolder/
myWebSite.com/TestFolder/MasterPage
So I'm not sure what I'm doing wrong. Any help would be greatly appreciated.
The code for my master page looks like this:
<%# Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Tester</title>
<asp:ContentPlaceHolder id="head" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<h1>This is a test of the master page.</h1>
<form id="form1" runat="server">
<div>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</form>
</body>
</html>
I fixed it. I made sure that the file path to the CodeFile in the header was "./MasterPage.master.cs" and the MasterPageFile reference in the header of the content page was "./MasterPage.master" not "~/MasterPage.master".
The url also worked just as myWebSite.com/
Thank you for the help anyways. Much appreciated.
I have a user control called header.aspx. In my user control if I do this it will work.
<script type="text/javascript">
function greeting(){
Alert("hi");
}
</script>
<asp:button id="button1" OnClientClick="greeting" /> </asp:button>
I am using this user control in a page called default.aspx. I tried using src="~scripts/foo.js". If I do that it does not work. The question is pretty simple I guess. How would I call a java script function in a user control which is stored in an external location( not in the page. Located in the scripts folder). Thanks in advance.
As I can understand this is clearly a path issue.
Just follow these steps might help you.
Create a .js file first. Put your code and save it in the folder you want it to.
Now Drag and Drop the js file inside the head section of your html code from the Solution Explorer window. This will give you the correct path for the js file.
The above steps is what I follow, when I create an external js file for my controls.
Also make sure you call your function in this manner also suggested by others Else your function won't get call:
<asp:button id="button1" OnClientClick="greeting();" /> </asp:button>
Just use the code below:
<script src="<%: ResolveUrl("~/Scripts/foo.js") %>"></script>
Script: test.js
function greeting() {
alert("hi");
return false;
}
user control: <asp:Button ID="button1" OnClientClick="return greeting()" runat="server" Text="click" />
Page:
<head runat="server">
<title></title>
<script src="test.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:temp ID="temp" runat="server" />
</div>
</form>
</body>
</html>
This should work now.
<asp:button id="button1" OnClick=" javascript : greeting();" /> </asp:button>
try to use it. havent trie but i think it should work.
First of all you need to create a seprate javascript file and then add this in your page in this way. add this tag in the tag of your page.
use
OnClientClick="greeting()"
you missed "()" in OnClientClick="greeting"
Please see the whole html code:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="scripts/foo.js"></script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:button id="button1" runat="server" OnClientClick="greeting()" Text="hit" />
</div>
</form>
</body>
</html>
Thanks.
External javascript file reference:
<script src="yourpath/yourfilename.js"></script>
Button Control
<asp:Button ID="button1" OnClientClick="greeting();" runat="server" Text="click" />
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Hello World</title>
<link href="StyleSheet.css" type="text/css" rel="stylesheet" />
<script type="text/javascript" src="Scripts/jquery-2.0.3.js">
$(document).ready(function () {
<%--$("#width").val() = $(window).width();
$("#height").val() = $(window).height();--%>
});
</script>
<script type="text/javascript">
$(document).ready(function () {
$("#width").val($(window).width());
$("#height").val($(window).height());
});
</script>
</head>
<body>
<form id="form1" runat="server">
<input id="width" type="hidden" runat="server" />
<input id="height" type="hidden" runat="server" />
</form>
</body>
</html>
the above is my aspx code with jquery script which gives the window height and width.
this code perfectly fine on all the browsers when i run the web app from visual studio http://localhost/Mypage.aspx
but when i host it on iis and run with my machine name http://MyMachine/Mypage.aspx it gives JSON undefined and the Property "$" is null or undefined errors.( this is only in IE 10 (non-compatibility mode) , for chrome it works fine)
question 1) do we need to take care of any security constraints for IE 10?
question 2) why does it happen this way when i host it on iis and run it with machine name on my own machine?
question 3) am i missing any jquery refrence.
question 4) obvious one, any solution to this problem.
use the Meta tag as suggested by many of the people.
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
but I want to give an importatnt tip. the mata tag should be the first tag in the head tag. I have read it some where if it is not the first tag it would not have its effect.
Are you sure you have the Scripts folder with jquery in the server?
I suggest you to debug with fiddler and see if jquery is loaded correctly or if there is an http error.
as suggested by I4v, adding this to the header fixed the bug for me too:
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
Thanks guys
I am dynamically generating a file from server based on user input. I need to provide a download button which, upon clicking, downloads a file to the user's file system.
Also, the user might click the same button twice, upon which the file should download again.
The dynamic generation of file rules out the HttpResponse.TransmitFile() option, which suports mutliple download.
Almost every other option I have come across needs Response.End() to be invoked, which prevents a second download.
How do I satisfy the 'multiple download" requirement?
Read up on Virtual Path providers, which might enable me to use TransmitFile(), but that looks like an overkill for such a simple requirement.
You could try either of the following:
Re-Generate the file each the user clicks download.
Save the file to disk, and stream it from there.
Got the answer from here:
http://www.eggheadcafe.com/tutorials/aspnet/3889fc21-1562-4d1b-89e4-cea5576690b2/refresh-web-pages-after-d.aspx
Basically it uses a client side script to reload the page after a download:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
<script type="text/javascript" language="javascript">
var isReload = false;
function DownloadFiles()
{
if(isReload == true)
{
isReload = false;
window.location.reload();
}
else
{
isReload = true;
}
window.setTimeout("DownloadFiles()", 2000);
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label runat="server" ID="lblMsg"></asp:Label>
<asp:Button ID="Button1" runat="server" Text="Download" OnClientClick="DownloadFiles();" OnClick="Button1_Click"/>
</div>
</form>
</body>
</html>