| L - Data Type Suffix | 
| l - Data Type Suffix | 
| Label - Ribbon | 
| Label - System.Windows.Controls. (WPF) | 
| Label - System.Windows.Forms. | 
| Label Control - Convert to TextBox | 
| Label Control (Windows) | 
| Label Control (WPF) | 
| LabelControl - Ribbon | 
| Lambda Expressions | 
| Lambda Functions | 
| Lambda Operator => | 
| Language Integrated Query (LINQ) | 
| Languages | 
| Last Position - Editor | 
| Late Binding | 
| Late Binding - InvokeMember | 
| Layout Modes - Windows Forms | 
| LayoutMode - Forms | 
| Lazy Evaluation | 
| Lazy Instantiation | 
| Lazy(Of) - VB.Net | 
| Lazy<T> | 
| LBound - Microsoft.VisualBasic.Information. | 
| LCase Method - VB.Net | 
| Leading Zeros - Numbers | 
| Leap Years | 
| Library Classes | 
| Like Operator (VB.Net) | 
| Line Continuation Character | 
| Line Labels - goto | 
| Line Numbering - Options | 
| Line Numbers | 
| Line Termination | 
| LinkedList<T> | 
| Linking Assembly | 
| Linking Project Files | 
| LinkLabel Control | 
| LINQ | 
| LINQ - AsEnumerable | 
| LINQ - Filters | 
| LINQ - Group Clause | 
| LINQ - Into Clause | 
| LINQ - Join Clause | 
| LINQ - Let Clause | 
| LINQ - OrderBy Clause | 
| LINQ - Queries | 
| LINQ - Query Expressions | 
| LINQ - Select Clause | 
| LINQ - Standard Query Operators | 
| LINQ - ToArray | 
| LINQ - ToDictionary | 
| LINQ - ToList | 
| LINQ - ToLookup | 
| LINQ - Where Clause | 
| LINQ (Language Integrated Query) | 
| Linq.SaveOptions.DisableFormatting | 
| Linq.XElement - Xml. | 
| List - System.Collections.Generic. | 
| List(Of String) (VB.Net) | 
| List<int> | 
| List<string> | 
| ListBox - DataSource | 
| ListBox - SelectionMode | 
| ListBox - System.Windows.Controls. (WPF) | 
| ListBox - System.Windows.Forms. | 
| ListBox - Windows Forms | 
| ListBox - Windows Forms Multiple Columns | 
| ListBox - WPF | 
| ListChangedEventArgs - ComponentModel. | 
| ListChangedEventHandler - ComponentModel. | 
| ListChangedType - ComponentModel. | 
| Listing Running Processes | 
| Lists | 
| Lists - Custom | 
| Lists - Generic | 
| Lists - Saving to Text Files | 
| ListSortDescription - ComponentModel. | 
| ListSortDescriptionCollection | 
| ListSortDirection - ComponentModel. | 
| ListView - System.Windows.Controls. | 
| ListView Control | 
| ListViewItem - System.Windows.Controls. | 
| Literal Constants | 
| Literal Constants - @ | 
| Literal Constants - Verbatim | 
| Literal Data Type Characters | 
| Literal Number Suffixes | 
| Literal Type Characters | 
| Literals - Date | 
| Literals - Number | 
| Literals - String | 
| LoadFrom - System.Reflection.Assembly. | 
| Local Functions | 
| Local Static Variables (VB.Net) | 
| Local Type Inference | 
| Local Variables | 
| Local Variables - Implicitly Typed | 
| Local Variables - Static (VB.Net) | 
| Locale | 
| Locale Issue | 
| Locations - Trusted | 
| lock | 
| Lock Statement | 
| Locked - Form Designer | 
| Locking Controls | 
| Locking Files | 
| Locking Objects | 
| Log File | 
| Log File - Creating | 
| Log File - Emailing | 
| Log File - Trace.WriteLine | 
| log4net.dll | 
| Logging - C# | 
| Logging - My.Application.Log | 
| Logging - System.Diagnostics.EventLog. | 
| Logging - VB.Net | 
| Logical Negation Operator ! | 
| Logical Operators - & | 
| Logical Operators - && | 
| Logical Operators - ^ | 
| Logical Operators - | | 
| Logical Operators - || | 
| Logical Operators - And (VB.Net) | 
| Logical Operators - AndAlso (VB.Net) | 
| Logical Operators - Not | 
| Logical Operators - Or (VB.Net) | 
| Logical Operators - OrElse (VB.Net) | 
| Logical Operators - Xor (VB.Net) | 
| Long Data Type (VB.Net) | 
| long? | 
| Loop Control Variable | 
| Loop Counters | 
| Loop Structures | 
| Loop Until (VB.Net) | 
| Loop While (VB.Net) | 
| Looping - do | 
| Looping - Each Character in a String | 
| Looping - Each Digit in a Number | 
| Looping - Each Word in a String | 
| Looping - for | 
| Looping - foreach | 
| Looping - Statements | 
| Looping - while | 
| Looping Through Collection | 
| Loops | 
| Loops - do | 
| Loops - for | 
| Loops - foreach | 
| Loops - while |