ASP.NET

Re: Create a Bitmap image in memory and show it in an ASP .Net Page

12-Jul-10 13:54

I am tryng to create a Bitmap completely in memory (Bitmap BMP = new BitMap(300,300)) and later with GDI create a complete image based on mathematical calculations, and later show the result in the ASP .Net page, but I don`t know which control use for it because all the ASP .Net image control that I find include an URL string property for stablishing the source image, but I don´t find any control which accepts an in memory image as source like pictureBox does in Windows Forms, but I find pages doing it, could anybody tell me how is it possible in ASP .Net.

Best Regards

Not Active12-Jul-10 14:34

Re: Create a Bitmap image in memory and show it in an ASP .Net Page

12-Jul-10 14:34

There aren't any built-in controls that will render an image from memory. You'll have to create you own server control, but there are numerous examples here and elsewhere.

I know the language. I've read a book. - _Madmatt

FJJCENTU12-Jul-10 19:59

Re: Create a Bitmap image in memory and show it in an ASP .Net Page

12-Jul-10 19:59

Could you please give any link talking about this Server Control creation.

Best regards

Not Active13-Jul-10 1:17

ScriptManager.RegisterClientScriptBlock pratices

13-Jul-10 1:17

You need to learn how to find information on your own.

I know the language. I've read a book. - _Madmatt

brunoseixas12-Jul-10 9:21

brunoseixas

12-Jul-10 9:21

Hello,

I have a Javascript function that needs to be thrown several times in the code-behind(C#) for user navigation.

I wanna know if calling the function by the method ScriptManager.RegisterClientScriptBlock is a good practice to resolve this issue.

Thanks.

Re: ScriptManager.RegisterClientScriptBlock pratices

T M Gray12-Jul-10 10:50

T M Gray

12-Jul-10 10:50

What kind of method? Does it matter to you when it gets processed during page load? Is there a reason you aren't creating one function that makes all the necessary calls and registering that?

Re: ScriptManager.RegisterClientScriptBlock pratices

Not Active12-Jul-10 11:44

Re: ScriptManager.RegisterClientScriptBlock pratices

12-Jul-10 11:44

brunoseixas wrote:
a Javascript function that needs to be thrown several times in the code-behind(C#)

You can't call a JavaScript function from code-behind. You can however write the JavaScript to the output stream. The best way would be to execute the script from the client-side load event such as

<body onLoad="MyFunction">

or with JQuery

<script>
$(document).ready( function() { MyFunction(); });
</script>

I know the language. I've read a book. - _Madmatt

brunoseixas13-Jul-10 2:30

brunoseixas

13-Jul-10 2:30

Yes, there is a reason.

This page uses a free javascript code called niceforms (http://www.emblematiq.com/lab/niceforms/), it has several bugs and needs to be recharged several times. And the problem is that it does not reload correctly if called at events such as onLoad or EndRequest in html (I do not know why). So, I created a static method in BasePage application that contains a method that performs this function across the ScriptManager.

The solution I found was this, and I'm just calling it in Page_Load when is postback.

Thank you.

Re: ScriptManager.RegisterClientScriptBlock pratices

Not Active13-Jul-10 2:50

Re: ScriptManager.RegisterClientScriptBlock pratices

13-Jul-10 2:50

brunoseixas wrote:
The solution I found was this...

No the solution is to use code that isn't buggy and functions appropriately.

I know the language. I've read a book. - _Madmatt

brunoseixas13-Jul-10 4:52

brunoseixas

13-Jul-10 4:52

Yes, of course. Tell that to the dummies of the commercial area. Haaaa

Laugh | :laugh:

Static values keeping their instance after stopping the debugger

Brendan Vogt12-Jul-10 9:00

Brendan Vogt

12-Jul-10 9:00

Hi,

I am debugging through a web application that was written in C#. When the app loads it gets some values using static methods. Whenever I stop the debugging and run it again then it doesn't go into these static methods again as they are static. I want to kill this static variable instance so that I can debug through these methods again. I have stopped the web server in VS2010, but it doesn't work. I hope I am making sense? Smile | :)

Thanks

Re: Static values keeping their instance after stopping the debugger

T M Gray12-Jul-10 10:47

T M Gray

12-Jul-10 10:47

That isn't what static methods mean. Static means that they do not rely on an instance of the object. If you call the method it will be executed every time it is called. If you aren't hitting your breakpoints in the static method then something else is going wrong.

Re: Static values keeping their instance after stopping the debugger

Brendan Vogt12-Jul-10 19:44

Brendan Vogt

12-Jul-10 19:44

Thanks for the reply.

I'm actually testing a singleton that was written to retrieve global values. It's the first time I am working with singleton so I am debugging to see how it works. The first time I ran it I got the instance of the singleton object, then I stopped it. I ran it again, and it doesn't go into the property where it returns the singleton's instance. I am using VS2010.

Thanks

Re: Static values keeping their instance after stopping the debugger

T M Gray13-Jul-10 4:59

T M Gray

13-Jul-10 4:59

Too many pronouns. When you ran "it", is "it" an exe, a method? If "it" is a method I would not expect a singlton to run the code to create an instance more than once. That is what makes something a singleton. Your description of the situation is far too vague to really give you any concrete answers.

Positioning a content page inside a Master Page

FJJCENTU12-Jul-10 6:46

Re: Positioning a content page inside a Master Page

12-Jul-10 6:46

Because the content pages can have different size so I am having problems of positioning the content pages inside the Master, and the Master Elements don`t keep an strict position, Because it must be a normal problem I think that it shall have a normal solution, but I don´t know it, so could you please tell me if is there any rule or way of keeping the Master elements unchanged independently of which content page is located in.

Best Regards

Sandeep Mewara12-Jul-10 8:51

Sandeep Mewara

12-Jul-10 8:51

1. Use Flow layout
2. Use html tables in your master page to design your UI. This would keep your master controls intact and a specified placeholder for your content page.

Re: Positioning a content page inside a Master Page

FJJCENTU12-Jul-10 13:45

Manage role is this correct?

12-Jul-10 13:45

The only problem is that my Master page also paint an lower icon bar for all the pages, so the content page comes in the middle and depending of it´s size it makes the Master change it's appearance, but I´ll check about Flow Layout

amina8912-Jul-10 2:41

amina89

12-Jul-10 2:41

Hi,
I failed to manage roles by code and web confg. so I used the code easily I have a table Security of my database (login,password,profil) and a login.aspx page and I need to open pages in each service to the people of this service .is this correct? can I combine the files into folders?
I must change the file wb.config?
my code:

 protected void Button7_Click(object sender, EventArgs e)<br />
    {<br />
        SqlConnection aCon = new SqlConnection(@"Data Source=.\SQLEXPRESS;UID=sa;Password=******;Initial Catalog=xxxxx");<br />
<br />
<br />
        aCon.Open();<br />
        String rqtr3 = " SELECT * FROM SECURITE WHERE LOGIN = '" + Textbox3.Text + "' AND PASSWORD='" + TextBox12.Text + "'";<br />
        SqlCommand cmr3 = new SqlCommand(rqtr3, aCon);<br />
        SqlDataReader drr3 = cmr3.ExecuteReader();<br />
<br />
        while (drr3.Read() == true)<br />
        {<br />
            TextBox2.Text = drr3["PROFIL"].ToString();<br />
            if (TextBox2.Text == "service1")<br />
            {<br />
                 Response.Redirect("default1.aspx");<br />
            }<br />
            else<br />
            {<br />
                if (TextBox2.Text == "service2")<br />
                {<br />
                     Response.Redirect("default2.aspx");<br />
                }<br />
<br />
                else<br />
                {<br />
                   if (TextBox2.Text == "service3")<br />
                {<br />
                     Response.Redirect("default3.aspx");<br />
                }  <br />
else.........<br />
<br />
                }<br />
<br />
<br />
            }<br />
<br />
        }<br />
<br />
    }

Thanks.

Not Active12-Jul-10 2:57

12-Jul-10 2:57

First, absolutely NEVER, EVER use unvalidated user input in your SQL statements. This is even more hanous because you are querying the security database. Lookup a term called 'SQL Injection attack'.

I know the language. I've read a book. - _Madmatt

amina8912-Jul-10 3:23

amina89

12-Jul-10 3:23

Hi,
even with an intranet? you advise me what?
Thanks

Not Active12-Jul-10 3:33

12-Jul-10 3:33

Even more so, most attacks occur from the inside

I know the language. I've read a book. - _Madmatt

Peace ON12-Jul-10 3:39

Peace ON

12-Jul-10 3:39

What you are trying to achieve is Role-based security using forms authentication.

I found very good example for the same.
Role-based Security with Forms Authentication[^]

HTH

Jinal Desai - LIVE
Experience is mother of sage....

Not Active12-Jul-10 4:25