SqlClient doesn't exist in the namespace "System.Data" Please help

Questions & Answers
1

Hello, i wanted to connect my Unity project to SQL database, but when i write “using System.Data.SqlClient” it gives me the error : “Assets/Scripts/Server.cs(10,19): error CS0234: The type or namespace name ‘SqlClient’ does not exist in the namespace `System.Data’. Are you missing an assembly reference?”. What can i do to solve this ? (I have imported the System.Data.dll)

2

Open the Configuration under the Player Settings. You should convert to .NET 4.x from .NET Standard 2.0 in Api Compatibility Level*.,Open the Player Settings. Configuration > Api Compatibility Level*
You should convert to .NET 4.x from .NET Standard 2.0