When using Page.Header.Controls.Add to add something to a page header, or possibly other scenarios where you add a control to a collection, you may receive the following error message: The [...]
To check if an object is of a certain type in c#, simply use the is statement: if (myPerson is Person) { // Variable is of type Person }
Preface Please see Entity Framework Select Functions Explained for an overview of each available select method. This post only covers a handful of them. Selecting Single Record by Primary Key [...]
Overview of all Entity Framework select methods: Find() - when you want to get an item by primary key. This will return null if it can't find an item. It [...]
White space and line breaks inside the ContentPlaceholder control on a Master page (via a Content tag on a regular page) are converted to a System.Web.UI.LiteralControl control. So if you've [...]
Declare the event in the UserControl and create a method that raises it. The event is named "SelectionChanged". UserControl.ascx /// <summary> /// Event to be raised by control when the [...]
Selector Starts With: $('input[name^=somePrefix]').doSomething(); Selector ENDS with: $('input[name$=someSuffix]').doSomething(); In ASP.Net: This is particularly useful in ASP.Net when you may not want to specify clientidmode static, but still want to use [...]
Issue When using jQuery to detect and handle the click of an ASP.Net checkbox, the click event is detected twice. You may notice that the event fires twice when you [...]
When you need to pull data from a GridView, e.g. when the user selects the row and you want to populate some fields that match data from the selected row, [...]