1. SQL ConnectionString From Web.config File.
2. Declare Connection String in Web.config file.
What is Enum in C#.- https://youtu.be/pEiA5JzPv9U
What is The Access Modifiers in C# - https://youtu.be/-JKTmwz4Boc
Structure In C# With Example - https://youtu.be/-pOsPdx0k30
what is ExecuteNonQuery , ExecuteScalar, ExecuteReader in C#. - https://youtu.be/E14wKw_8eB8
ASP.NET Connect With SQL Server - https://youtu.be/MIfIRIP-reM
SQL ConnectionString From Web.config File. - https://youtu.be/P2c8zTlCykU
#web.config#SQLConnectionString#ADO.NET