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Arrow keys do not raise KeyDown in a WinForm because the form swallows them. Override ProcessCmdKey to catch them.
Public Class Form1
Protected Overrides Function ProcessCmdKey(ByRef msg As Message, ByVal keydata As Keys) As Boolean
If keydata = Keys.Right Then
PictureBox1.Left += 10
End If
Use the CallerMemberName, CallerFilePath and CallerLineNumber attributes in C# 5 to log where a method was called from.
Bind the values of an enum to a WinForms ComboBox with a display name and a numeric key.
public enum RequestDept
{
CallCenter = 0,
Development = 1,
Enrollment = 2,
Implementation = 3,Fix the unspecified error from OleDbConnection.Open when reading Excel files on SharePoint 2010 with the ACE provider.
I received the 2013 Microsoft MVP Award for contributions to the Visual C# technical community.
Download a file in a Windows Store app with BackgroundDownloader and async/await in C#.
async Task<bool> DownloadFile(Uri source, StorageFile destination)
{
try
{
BackgroundDownloader downloader = new BackgroundDownloader();
DownloadOperation download =An async C# method that checks a URL is well formed and that the server answers, using a HEAD request.
private async Task<bool> UriExists(string url)
{
try
{
// Validate whether url has a valid uri pattern
if (!Uri.IsWellFormedUriString(url, UriKind.RelativeOrAbsolute))Replace all b tags with strong tags in C# using a lazy regular expression that also works across line breaks.
<b>This is a bold text</b> Lorem Ipsum is simply dummy text
<b>some more bold text</b>
Lorem Ipsum is simply dummy text <b> again bold text </b>Windows Store apps have no config file. Use ApplicationData.Current.LocalSettings to save and read app settings in C#.
using Windows.Storage;
bool SaveSettings(string key, string value)
{
try
{A console sample that uses FileSystemWatcher to log a timestamp every time a file changes.
using System;
using System.IO;
namespace ConsoleApplication1
{
class ProgramHandle the MouseDown event of a WinForms RichTextBox to select the whole line under the mouse.
Private Sub RichTextBox1_MouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) Handles RichTextBox1.MouseDown
Dim box = DirectCast(sender, RichTextBox)
Dim index = box.GetCharIndexFromPosition(e.Location)
Dim line = box.GetLineFromCharIndex(index)
Dim lineStart = box.GetFirstCharIndexFromLine(line)
Dim lineEnd = box.GetFirstCharIndexFromLine(line + 1)Remove duplicate strings from a List in C#, the old way with Sort and RemoveAt and the shorter way with Distinct.
List<string> strlist = new List<string>();
//Fill the list with random values
strlist.Sort();
Int32 index = 0;
while (index < strlist.Count - 1)
{