| RadioButton Control |
| RaiseEvent (VB.Net) |
| Raising Events |
| Random - System. |
| Random Number Generator |
| Random Numbers |
| Random Object |
| RCW (Runtime Callable Wrapper) |
| Read Only Fields |
| Read Only File Attribute |
| ReadAllText Method |
| Reading Strings into Arrays |
| Reading Text Files |
| Reading XML |
| ReadOnly Fields |
| ReadOnly Property |
| ReadOnlyCollection<T> |
| ReadXML Method |
| Reallocate an Array |
| Rebuild All |
| Record Macro |
| Record Temporary Macro |
| Rectangle - System.Drawing. |
| RectangleF - System.Drawing. |
| Rectangular Arrays |
| Rectangular Coordinates |
| Red Underlining |
| ReDim (VB.Net) |
| ReDim Preserve (VB.Net) |
| ref |
| ref Arguments |
| ref Parameters |
| RefEdit |
| RefEdit Control |
| Reference Types |
| ReferenceAssemblyFromVbaProperty |
| Referenced Parameters |
| References |
| References - Service |
| References - Web |
| Reflection |
| Reflection API |
| Reflection vs Dynamic Binding |
| Reflection.Assembly.GetCallingAssembly |
| Reflection.Assembly.GetEntryAssembly |
| Reflection.BindingFlags.GetProperty |
| Reflection.BindingFlags.InvokeMethod |
| Reflection.Emit Classes |
| Reflection.MethodBase.GetCurrentMethod |
| Reflector |
| Reformat Code |
| regasm.exe |
| Regex |
| Regex - System.Text.RegularExpressions. |
| Regex Class |
| Regex Groups |
| Regex Object |
| Regex.Matches |
| RegexOptions - Text.RegularExpressions. |
| Region |
| RegionInfo - System.Globalization. |
| Register for COM Interop |
| Registry |
| Registry - Accessing |
| Registry - AddinList |
| Registry - Automation Add-ins |
| Registry - COM Add-ins |
| Registry - DoNotDisableAddinList |
| Registry - Excel-DNA |
| Registry - Hive |
| Registry - Microsoft.Win32. |
| Registry - RestrictToList |
| Registry - Switches /R |
| Registry - VBA Add-ins |
| Registry Object |
| Registry.ClassesRoot - Microsoft.Win32. |
| Registry.CurrentUser.OpenSubKey |
| RegistryKey - Microsoft.Win32. |
| RegistryKey Class |
| RegistryValueKind - Microsoft.Win32. |
| RegSrv32 |
| Regular Expressions |
| Regular Expressions - Counting Lines |
| Regular Expressions - Counting Matches |
| Regular Expressions - Extracting Numbers |
| Relational Operators |
| ReleaseCOMObject - Marshal. |
| ReleaseHandle |
| Remainder After Division % |
| Remote Debugging |
| Remove Leading Zeros |
| RemoveHandler (VB.Net) |
| Removing Whitespace |
| Rename Project |
| Renaming Projects |
| Renaming Solutions |
| Replacing Strings |
| Representational State Transfer (REST) |
| RequestComAddInAutomationService |
| Resetting Debugger Options |
| ReSharper |
| ResizeMode - PresentationFramework |
| ResizeMode - System.Windows. |
| Resizing Arrays |
| Resources |
| Resources - Add Existing File |
| Resources - Bitmaps |
| Resources - Embedded |
| Resources - Referenced |
| Resources.resx (C#) |
| Resources.resx (VB.Net) |
| REST (Representational State Transfer) |
| REST API - GET Request |
| REST API - POST Request |
| RestSharp |
| return |
| return - subroutines |
| Return (VB.Net) |
| Return Dynamic Types |
| Return Types |
| Returning Output Parameters |
| Reversing Array Items |
| Reversing Text Strings |