C#

private void treeView1_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e){
	e.Node.BackColor = Color.Blue;
	e.Node.ForeColor = Color.Red;
}

Brij wrote:

Its always better to use string for saving Datetime.

Brij wrote:

but for better flexibility and avoid Exceptions one can use it.

bool CanWriteToFolder(string folder)
{
     FileIOPermission f = new FileIOPermission(FileIOPermissionAccess.Write, folder);
     try {
         f.Demand();
     }
     catch (SecurityException) {
         return false;
     }
     return true;
}

string directoryPath = "C:\\XYZ"; //folderBrowserDialog.SelectedPath;<br />
               bool isWriteAccess = false;<br />
               try<br />
               {<br />
                  AuthorizationRuleCollection collection = Directory.GetAccessControl(directoryPath).GetAccessRules(true, true, typeof(System.Security.Principal.NTAccount));<br />
                  foreach (FileSystemAccessRule rule in collection)<br />
                  {<br />
                     if (rule.AccessControlType == AccessControlType.Allow)<br />
                     {<br />
                        isWriteAccess = true;<br />
                        break;<br />
                     }<br />
                  }<br />
               }<br />
               catch (UnauthorizedAccessException ex)<br />
               {<br />
                  isWriteAccess = false;<br />
               }<br />
               catch (Exception ex)<br />
               {<br />
                  isWriteAccess = false;<br />
               }<br />
               if (!isWriteAccess)<br />
               {<br />
                 //handle notifications                 <br />
               }