How to Convert a Generic List to a Comma-Delimited List

The Situation: You have a List<string> and need to convert it to a comma-delimited list (for display or storage). A Solution: This is a great example of how C# has improved over the years. I found this solution in this StackOverflow discussion and don't want to lose it, so I am copying it here for … Continue reading How to Convert a Generic List to a Comma-Delimited List

How to Add a New Table to an Existing Database via EF Code-First Migrations

The Situation: You have been using Entity Framework code-first migrations with an existing database. Making changes to an existing table, such as adding a new field, go smoothly, and the database is updated correctly when you run an "Update-database" command. However, when you create an entirely new entity in your model and run "Update-database", the … Continue reading How to Add a New Table to an Existing Database via EF Code-First Migrations

How to Enable and Use EF Code-First Migrations for Multiple Contexts

The Situation You want to use Entity Frameworks code-first migrations to push model changes to the database, but you have multipleĀ databases and contexts in your model. When you try to run Enable-Migrations for the second context, you get an error that looks like this: Migrations have already been enabled in project 'Project1'. To overwrite the … Continue reading How to Enable and Use EF Code-First Migrations for Multiple Contexts

How To Make a Column in an ASPxGridView ReadOnly for Editing but Enabled when Inserting a New Record

The Situation: You have a DevExpress ASPxGridView on your page with a column designated as "ReadOnly=true". This works great when you are editing an existing record -- it won't allow you to change that field, but when you try to insert a NEW record, you can't enter anything in the field. Note: I don't know … Continue reading How To Make a Column in an ASPxGridView ReadOnly for Editing but Enabled when Inserting a New Record