Binding A DropDownList With Another DropDownList With Database In Asp.Net ( Hindi / Urdu )

App Settings Code Download From Link Below.
https://www.mediafire.com/file/6yxg6u6vppj59a5/app+settings.rar/file

Primary Key Foreign Key Relationship in SQL Server Video Given Below.
https://www.youtube.com/watch?v=wofRkTxxME4

Exception And Exception Handling In C# Programming Language Video Given Below.
https://www.youtube.com/watch?v=gfSa5iadn8I

IsPostBack Property In Asp.Net Video Given Below.
https://www.youtube.com/watch?v=G5FG4OOP_08

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