I faced a strange problem with Visual Studio 2005 and Visual Studio 2008 which is I have several ASP.NET Projects some of them using .NET 2.0 or Visual Studio 2005 and the others are using .NET 3.5 or Visual Studio 2008. The problem was when I try to run the Web Application I got this...
I have faced a very strange issue with the .NET which was subtracting 2 Float digits "1.5 - 1.1" the result should be 0.4 but it was 0.39999999999999991 . This happens because floating point numbers can not be precisely represented in binary, such as 1/4 the result will be 0. To solve this issue all...
This class uses a symmetric key algorithm (Rijndael/AES) to encrypt and decrypt data. As long as encryption and decryption routines use the same parameters to generate the keys, the keys are guaranteed to be the same. In a real-life application, this may not be the most efficient way of handling encryption, so as soon as...
What Captcha stand for? Completely Automated Public Turing test to tell Computers and Humans Apart. The Captcha technology help you to make sure your site is reasonably secure against automated attacks. Write the following code in a class named Captcha: public class Captcha { //make the captcha image for text public Bitmap MakeCaptchaImage(string txt, int width, int hight,...
Sometimes we need to add a static item to the top of DropDownList web control, such as "-- Please select --" or any other text. This static item will be removed and replaced with the items that comes from the data source you are using after calling DataBind() method. To keep the static item you are...
As we all know that the default max file size that the FileUpload control is using is 4 MB.I was trying to upload a file using FileUpload control provided in ASP.NET but the file size was larger than 4 MB so I was not be able to upload the file.I had to change the...
Did you know that String functions StartsWith and EndsWith are case-sensitive even in VB.NET? You will need to make sure you are looking for the correct string, since 'abc' with case-sensitivity is different than 'ABC'. So, if your function is looking for 'abc', you must make sure that you make adjustments to the string, in...
In this post we are going to know how to generate barcode images using C#.NET native classes. You will not need a third-party tool or external DLL library in order to achieve this. As we all know that barcodes depends on fonts, there are plenty of them used for barcodes. The most famous font for...
In this post we are going to know how to write a text to an image using C#.NET. It was required in one of the projects that we were working on, the ability to write a dynamic string that would be entered by the user to an image. Please find below the code that write...
We were using lately the login controls for ASP.NET in a website we are working on it. We discovered a bug or we can call it limitation in the password recovery web control. We used to use the membership provider and login controls, but we did not face this problem before since we were...
