Per MSDN:

By default, the ASP.NET login controls work in plain text over HTTP. If you are concerned about security, use HTTPS with SSL encryption.

The solution is to allow login access only via HTTPS.

1. You’ll need a folder in you web server with all the image ads in it. But this folder should contain Only the ads images and nothing else, ex. /images/ads/

2. In the aspx page the following code:

<a href=”your_ad_url”>
<%= GetYourAdHere() %>
</a>

replace your_ad_url with url you want. We need to write implementation of the GetYourAdHere method:

3. In the code behind class add the following code:

using System.IO;

…

private const string _IMAGES_AD_PATH = “~/images/ads/”;
private const string _IMG_AD_TAG = “<img src=”http://www.devtheweb.net/images/ads/XXX” alt=”Your Ad Here” />”;

private static int adIndex = 0;

…

public string GetYourAdHere()
{
DirectoryInfo di;
FileInfo[] imgAds;
string result = “”;

try
{
di = new DirectoryInfo(Server.MapPath(_IMAGES_AD_PATH));

//t get images files
imgAds = di.GetFiles();

result = _IMG_AD_TAG.Replace(“XXX”, imgAds[adIndex].Name);

if (adIndex < imgAds.Count() – 1)
++adIndex;
else
adIndex = 0;
}
catch (Exception)
{
}

return result;
}

_IMAGES_AD_PATH is the path of folder with image ads.

_IMG_AD_TAG is template of the image tag, you can modify how you want, only XXX is used to be replaced with the image name.

The code should works for you if you change only these two const variables’ values. Here’s an explanation about the other part of the code:

adIndex is a static variable which we use to store the current index of the ads images. It’s increased with 1 every time the banner ad is shown. That’s how we rotate the banners

Response.Clear();
Response.AddHeader(“Content-Type”, “application/html”);
Response.AddHeader(“Content-Disposition”, “attachment; filename=” + “SOME_FILENAME”);
Response.Write(_YOUR_TEXTBOX_ID.Text);
Response.Flush();
Response.End();

That’s all

Here’s an C# example:

using System.Security.Cryptography;
using System.Text;

public string md5(string aString)
{
byte[] byteStr = Encoding.UTF8.GetBytes(aString);
MD5 md5Provider = new MD5CryptoServiceProvider();

return Encoding.UTF8.GetString(md5Provider.ComputeHash(byteStr));
}

Here’s the same function in VB.NET:

Imports System.Security.Cryptography
Imports System.Text

Public Function md5(ByVal aString As String) As String
Dim byteStr() As Byte =  Encoding.UTF8.GetBytes(aString)
Dim md5Provider As MD5 =  New MD5CryptoServiceProvider()

Return Encoding.UTF8.GetString(md5Provider.ComputeHash(byteStr))
End Function

<form action=”https://www.paypal.com/cgi-bin/webscr” method=”post”>
<input type=”hidden” name=”cmd” value=”_s-xclick” />
<input type=”hidden” name=”hosted_button_id” value=”11271506″ />
<input type=”image” src=”https://www.paypal.com/en_US/i/btn/btn_donateCC_LG.gif” border=”0″ name=”submit” alt=”PayPal – The safer, easier way to pay online!” />
<img alt=”" border=”0″ src=”https://www.paypal.com/en_US/i/scr/pixel.gif” width=”1″ height=”1″ />
</form>

Adding the donate button code in the blog was easy (it’s wordpress), but in the entire part of the site it was a problem, because it’s written in asp.net.

I’ve search for many solutions but most of them are too complicated, ex. why should I add 3rd party control for a simple paypal donate button!?

The form above can be re-written also in HTML:

<a id=”paypalDonate” target=”_blank” href=”https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=11271506″>
<img border=”0″ id=”payPalImage” src=”https://www.paypal.com/en_US/i/btn/btn_donateCC_LG.gif” alt=”Donate to DevtheWeb.NET” />
</a>

If you want to use to code above, all you need to do is to replace hosted_button_id’s value with your value, generated for your form by PayPal and that’s really all

aspx pages that I want to comment for test purpose. Other situation is when I find some bug, ex. adding comments doesn’t work, I’d comment the ‘Add New Comment Control’ while I’m fixing the bug and then it will be uncomment again.

In ASP.NET 2.0 or later it can be done by adding <%– –%>, ex:

<%–
<asp:TextBox ID=”_someTextBox” runat=”server”></asp:TextBox>

–%>

The content between <%– and –%> will be ignored by the asp.net compiler and nothing of it will be sent to the user’s browser when visit current page. That’s the difference between Server Side Comments and Client Side Comments (), ex.

If you add the following code in your aspx page:

<!–
<asp:TextBox ID=”_someTextBox” runat=”server”></asp:TextBox>
–>

Then run the aspx page in your browser, the asp.net code will be rendered as something like that:

<!–
<input name=”ctl00$_mainContentPlaceHolder$_someTextBox” type=”text” id=”ctl00__mainContentPlaceHolder__someTextBox” />
–>

In conclusion, if you want to comment something in your asp.net project and want it not to be rendered by the compiler and/or not to be sent to the client, you’d better use the server side commenting with <%– –%>.

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2. You have the freedom of choosing from multiple languages (C#, VB.NET, C++, etc.)

3. SQL Server is also very fast, secure, and it can store extremely large amounts of data; actually, there’s no limit;

4. With ASP.NET you get the whole .NET Class Library and the thousands of third party components as well. There are definitely much more third party components out there for .NET than for PHP.

5. The Visual Studio .NET IDE. makes coding much, much easier. It can highlight syntax, let you know when the wrong stuff is commented, do command completion, and just plain help you organize better. Visual Studio has a really nice debugger.

6. The Compiled Code (vs. PHP Interpreted Code) – .NET compiles code, such as C#, into what its creators have termed MSIL (Microsoft Intermediate Language).

7. In ASP.NET it’s easy to use threads and build asynchronous handlers in your server-side web code.

8. ASP.NET developers are paid better