Common ASP.Net Tips and Tricks - Part 2

What to use, If(isBool==true) or if(isBool)?

Solution

Always use if(isBool) like if condition since it is comfortable to read easily.

If(strValue==”some Value”) vs If(strValue.ToLower()==”some value”)

What to use, If(strValue==”some Value”) or If(strValue.ToLower()==”some value”)?

Solution

Whereas we filter records with search parameter always, first convert to lower case or upper case, then compare the result, since some search results do not work as expected with case sensitive words.

“” or string.Empty

What to use, “” or string.Empty, when initializing or reinitializing a string variable?

Solution

Best practices is to use string.Empty since no new instance is created, setting a “” value creates a new memory location to store the value into it.

Detecting which control is responsible for a postback event

How to detect which control is responsible for a postback event in an ASP.Net webform?

Solution

ASP.NET internally uses a “__EVENTTARGET” hidden field that stores the ID of the control that caused the post-back and acts accordingly. So we can easily detect a Checkbox change, Radio button change, Dropdownlist change and so on.

Resource Files not being compiled into DLLs

What to do when resource files are not being compiled into DLLs?

Solution

This type of error or problem occurs when we are using a resource file and a proper build action is not set.

Step 1

Right-click on the resource file that you have added or just selected and press F4 that displays the Properties window.

Step 2

Change the Build Action to Embedded Resource.

Then when we publish the website with a third-party DLL or tools on GoDaddy or other hosting platform sometimes a System.Security.Security Exception occurs due to trust level.

For example, Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Solution

To allow third-party tools or DLL to run with out website we need to put the following configuration in the web.config:

Conclusion

I hope you found my previous article on ASP.NET Tips and Tricks Part 1 useful. In this article we learned common exceptions and their solutions with some best practices when developing to build a better product. I will provide other useful tips in my next series of articles. Thanks!