Web Development

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 14:51

Hi all,

I am having a winodows forms control (windows control library) which is having a list view control on to which I will drag and drop the files and the control holds their names along with the path. It is working fine when I am executing it in VS2005. I am able to drag and drop single file or multiple files at a time. But, when I am embeding it into a web page using <object> tab, I am able to drag drop only single file at a time, it is not allowing me to drag and drop multiple files at a single go. any body have any clue?

my web page code:

<object id="myName" classid="http:WindowsControlLibrary1.dll#WindowsControlLibrary1.UserControl1"
height="870" width="1250" align="left" name="myCtrl" />
</object>

my dll code is here:

private void listView1_DragDrop(object sender, DragEventArgs e)
{
if(e.Data.GetDataPresent(System.Windows.Forms.DataFormats.FileDrop))
{
string[] files =(string[])e.Data.GetData(System.Windows.Forms.DataFormats.FileDrop);
try
{
foreach (string s in files)
{
listView1.Items.Add(s.ToString());
}
}
catch (System.Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
return;
}

}
}

private void listView1_DragEnter(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(System.Windows.Forms.DataFormats.FileDrop))
{
string[] files = (string[])e.Data.GetData(System.Windows.Forms.DataFormats.FileDrop);
foreach (string s in files)
{
e.Effect = System.Windows.Forms.DragDropEffects.Copy;

}
return;

}
else
{
e.Effect = System.Windows.Forms.DragDropEffects.None;
}
}

private void listView1_DragOver(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(System.Windows.Forms.DataFormats.FileDrop))
{
string[] files = (string[])e.Data.GetData(System.Windows.Forms.DataFormats.FileDrop);
foreach (string s in files)
{
e.Effect = System.Windows.Forms.DragDropEffects.Copy;
}
return;
}
else
{
e.Effect = System.Windows.Forms.DragDropEffects.None;
}

}

Thanks in Advance.

-Ram.

modified on Thursday, December 27, 2007 12:30:40 AM

Michael Sync26-Dec-07 19:12

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 19:12

It's better if you don't use any window control in webform.

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

ram197426-Dec-07 20:23

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 20:23

Hi Michael,

Then how do I get similar functionality? The web controls will not allow the drag and drop functionality so, how do I achieve it?

-Ram

Michael Sync26-Dec-07 20:41

Re: Windows foms control in Web page. a simple problem when with web pages [modified]

26-Dec-07 20:41

ram1974 wrote:
The web controls will not allow the drag and drop functionality

You ca drag and drop the web control but your requirement is very strange.

You want to drap and drop the file from Explore to the web page, right? Actually, it is not very good requirement for web application..

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

ram197426-Dec-07 21:02

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 21:02

Hi Michael,

Yes you are right I want to drap and drop the file from Explore to the web page.

Yes it may be a strange requirement. I tried my luck with web applications then later I thought to bet on mixing both the web applications and Windows, by using the windows control libarary inside the web page.

When I am able to drag and drop a single file, it should allow me drag and drop multiple files also - am I right? But, it is not allowing me to drop multiple files. Am I mising something?

Thank you Michael for your response.....

-Ram.

modified on Thursday, December 27, 2007 3:09:55 AM

Michael Sync26-Dec-07 21:20

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 21:20

I have seen that kinda features in some photos website.. but they used Flash for that..

Can you check this article?
http://blog.vixiom.com/2007/06/29/merb-on-air-drag-and-drop-multiple-file-upload/[^]

They said,

That's it! test your AIR app by dragging some files from the file system, once you drop them the upload progress components show a visual representation of the files, click 'upload files' and the files are upload all at once (for real real not for play play this time).

So, I think it is what you are looking for..

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

ram197426-Dec-07 22:46

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 22:46

Hi Michael,

Thank you very much for your response.

This is a kind of task I am looking at. But, I doubt my co., will allow me to use any third party S/w.

Do, you think I can solve this problem in a any way?

-Ram.

Michael Sync26-Dec-07 23:06

Re: Windows foms control in Web page. a simple problem when with web pages

26-Dec-07 23:06

I think this is the Flex feature, right? not third-party control.... AFAIK, Flex is as same as Flash and Flex is open source one.

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

ram197427-Dec-07 19:02

Need help with html client controls in asp.net

27-Dec-07 19:02

Hi Michael,

Thanks you very much, I will give a try with Flex.

Thanks a lot once again.

-Ram.

sumanshakya26-Dec-07 9:56

sumanshakya

26-Dec-07 9:56

how can i find a html control from asp.net page?
I have a html input control

I need to populate some values to it using asp.net from page-behind.

(Without the use of runat='server').

Thanks in advance

Suman Shakya

Re: Need help with html client controls in asp.net

ram197426-Dec-07 18:11

How to run exe from JavaScript

26-Dec-07 18:11

Hi Suman,

The possibility is that you can do it using the Javascript.

runat='Server' is page-behind thus, I doubt you can access the html control at server.

-Ram.

rajesh4u24-Dec-07 0:17

rajesh4u

24-Dec-07 0:17

Hii

can any one knows how to call an exe from javascript

Thnks in advance

Re: How to run exe from JavaScript

Manikandan.net25-Dec-07 19:26

Manikandan.net

25-Dec-07 19:26

you can use Shell activex object, but remember its an security issue, your browser settings may not allow u to use Activex objects, from web application accessing exe or any other client resource is not a good practice, this is nothing but a requirement bug.

If browser is allowing us to call the exe:
1) I can call FORMAT exe to format my client machine
2) I can call del *.* from c:\WINDOWS\system32

Now u may understood why browser is not allowing!!!

Manikandan.net
[Coding is life]

Re: How to run exe from JavaScript

Paul Conrad31-Dec-07 10:27

Paul Conrad

31-Dec-07 10:27

Not a good idea for security reasons.

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Getting an Array from a Web Server?

gunner_uk200022-Dec-07 6:59

gunner_uk2000

22-Dec-07 6:59

I have a web service which returns a List of Objects:

[WebMethod(EnableSession = true)] public List<object> getProjects()

This returns that data that I want to be returned, Here is the XML:

<arrayofanytype><br />
<anytype xsi:type="xsd:int">2</anytype><br />
<anytype xsi:type="xsd:string">Cow Pie</anytype><br />
<anytype xsi:type="xsd:string">Pies with cows</anytype><br />
<anytype xsi:type="xsd:dateTime">2007-01-01T00:00:00</anytype><br />
<anytype xsi:type="xsd:dateTime">2007-01-22T00:00:00</anytype><br />
<anytype xsi:type="xsd:int">22</anytype><br />
</arrayofanytype><br />

My Question is how do I get this data back like I would a bool being returned from a web server?

When I actually call the method in my c# ASP.Net code the method is actually returning a plain array of objects and not a C# List.

This Code gets me a SOAP System.NullReferenceException

<br />
Object[] objects = null;<br />
objects = service.getProjects();<br />

I realise I'm Probably missing something really simple here, but can anyone enlighten me about whats going wrong here?

Re: Getting an Array from a Web Server?

Paul Conrad23-Dec-07 14:42

Paul Conrad

23-Dec-07 14:42

Not sure without really having an idea how your project is set up.

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Setting the Date/Time on the server hosting my web service

Skippums21-Dec-07 5:09

Skippums

21-Dec-07 5:09

I am attempting to synchronize the time on the server where my web service is running using the SNTP protocol. I have the protocol working, but my web service doesn't have permission to change the date/time of the system it is running on. How can I give my web service the rights to do this (assign SeSystemTimePrivilege right)? Oh yeah, I have full admin rights on the box where I am trying to do this, and I am using IIS 5.0 in WinXP SP2, and production will be on IIS 6.0 in Win 2003 Server. Thanks,

Sounds like somebody's got a case of the Mondays

-Jeff

Re: Setting the Date/Time on the server hosting my web service

Dave Kreskowiak21-Dec-07 8:34

Dave Kreskowiak

21-Dec-07 8:34

It's no the web service that gets the permissions to do this. It's the account that IIS is running your web service under. I think it's ASPNET, or something close to that. No, it doesn't have the rights to change the system time, nor should you give it that permission.

Why on earth are you changing the time on a production server?? You know that time sychronization is built into Windows, right? I think you're looking for the W32tm command line utility. Doc on it are here[^].

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

transfer input value to another page

idsanjeevjha20-Dec-07 22:09

idsanjeevjha

20-Dec-07 22:09

how can transfer inputed on another page

sanjeev

Michael Sync21-Dec-07 21:03

21-Dec-07 21:03

1. You can transfer by passing them as a parameters..

For example: http://yourdomain.com?input1=1&input2=2

2. You can store your data in Session object or Cache and retrieve them from other page..

3. if your data is so small, you can store it in cookies.

3. If you are using the silverlight, you can use the managed stroage that has more capacities than cookies. (I think 1 M or something)

Thanks and Regards,
Michael Sync ( Blog: http://michaelsync.net)

Paul Conrad23-Dec-07 14:43

Paul Conrad

23-Dec-07 14:43

You can use cookies, session variables, form values, just to name a few...

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

Manikandan.net25-Dec-07 19:38

Manikandan.net

25-Dec-07 19:38

Just to submit values from one page to another DON’T USE cookies, session, or cache, these items will occupy your server memory. Assume if 1000 users logged in to your application, then your IIS will be very slow.

Use the EnableViewStateMac="false" page directive to the target page, which will allow you to get the values from the submitted page.

Bellow is the sample code, I am send values from default2.aspx to default3.aspx

Default2.aspx

<br />
<%@ Page Language="C#"  AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %><br />
<br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
    <title>Untitled Page</title><br />
</head><br />
<body><br />
    <form id="form1" runat="server" onsubmit="this.action='default3.aspx'"><br />
    <div><br />
    <input type="text" name="input1" /><br />
    <input type="submit" value="submit" /><br />
    </div><br />
    </form><br />
</body><br />
</html><br />

Default3.aspx

<%@ Page Language="C#"  EnableViewStateMac="false"   AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %><br />
<br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
    <title>Untitled Page</title><br />
</head><br />
<body><br />
    <form id="form1" runat="server"><br />
    <div><br />
    <%Response.Write(Request["input1"]); %><br />
    </div><br />
    </form><br />
</body><br />
</html><br />

Manikandan.net
[Coding is life]

arunkumarv28-Dec-07 23:29

arunkumarv

28-Dec-07 23:29

use session