How to write query using linq?

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LINQ

entity-framework

How to query convert to use entity query ?
I create database in c# and old database copy to new database.But I want to make copies using entities. How to convert use entities this query?

What I have tried:

private static void TableCopy() {
foreach (var tablename in Settings.Default.Student){
var query= @"Insert ınto" + StudentDatabaseName + ".tbl" + tablename +"select * from StudentChangeDatabaseName +"tbl"+tableName);
}