how to resolve the cast exception handling

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VS2010

i can upload one file to ftp server(drive hq).but one exception is occured ..that is

"Unable to cast object of type 'System.Net.HttpWebRequest' to type 'System.Net.FtpWebRequest'."

Posted 20-Jun-15 3:04am

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Sergey Alexandrovich Kryukov · Answer 1 · 2015-06-20T03:16:00

Simple: don't cast types which are not assignment-compatible. Look at your code and the MSDN help on both classes where it shows inheritance between nearest classes in inheritance tree; then you well see it. If not, learn inheritance, compile-time and runtime types and general typing principles in OOP and .NET.

—SA