Optimistic Concurrency Using Rowversion With Entity Framework in ASP.Net
In a console or Windows Forms app, it would be common to load an object from the database, work with it a bit, then save it. But with WebForms, the [...]
Fancy Checkboxes and Toggle Switches
This allows you to replace default checkboxes with a nicer-looking custom font alternative. This example uses Font Awesome 4 icons, but the CSS could easily be modified to use any [...]
Prevent Link/Button Event or Post
Preventing a Link or Button from moving to the next URL (or triggering a post or postback in the case of ASP.Net) is easily accomplished using the very common method [...]
Preserve White Space in Static Text Without Using PRE Tag
When displaying multi-line text (e.g. input from a TextArea) in a static element (e.g. DIV), extra white space and line breaks are ignored, resulting in one long line of text. [...]
JS Files and Bundling in ASP.Net WebForms
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CSS Files and Bundling in ASP.Net WebForms
CSS File Bundling Basics To add custom CSS to an ASP.Net project, add the CSS files to /content and include them in a bundle in Bundle.config. A style bundle can [...]
Copy Entity Properties to New Entity in Entity Framework
The usual way to copy the properties of one entity to another would be to implement the ICloneable interface and do a proper, deep copy of all properties from one [...]
Add New Entity (or Copy Entity) with Entity Framework
To add a new entity to your model, simply add it using <context>.<models>.Add(newEntity) and then call <context>.SaveChanges(). If you want to copy an existing entity and insert the copied item [...]
Display Custom Input Error Messages in an MVC View in ASP.Net
It is easy to display input errors using a field's validation message in a view. Simply call ModelState.AddModelError() passing in the property ID and error message, then return the View(). [...]
Relationships in Entity Framework 6
This demonstrates how to configure one-to-many and many-to-many relationships in a code-first Entity Framework ASP.Net MVC application. The sample application is a blog containing posts, post categories (one-to-many), and post [...]