.NET GENES

Hi, Here's a simple asp.net program that performs adding of data to GridView control through jQuery and ajax. On page load, perform databinding on dropdown list and gridview using server side and code behind. And on client side, that is a selection change occurs in dropdown list, perform binding by adding table rows and columns to GridView. Page Load (Load All Products): Selection Change (Load Specific Products): The sample code is available for download here: Databinding ASP.NET 4.5 GridView with jQuery and Ajax Code Cheers!

In this post GeckoFX DocumentText similar to Webbrowser , I presented a solution on how to retrieve the page source of a website. However, another solution was provided by a .NET guru using TextContent property: this .Document.GetElementsByTagName( "html" )[0].TextContent; Cheers!

Here's how to paint WPF DatagridCell using extension methods without using IValueConverter. Extension Method: 1 2 3 4 5 6 7 8 9 10 11 12 Module DataGridExtensions < Extension() > Function GetRow ( ByVal grid As DataGrid, ByVal index As Integer ) As DataGridRow Dim row As DataGridRow = DirectCast (grid.ItemContainerGenerator.ContainerFromIndex(index), DataGridRow) If row Is Nothing Then grid.UpdateLayout() grid.ScrollIntoView(grid.Items(index)) row = DirectCast (grid.ItemContainerGenerator.ContainerFromIndex(index), DataGridRow) End If Return row End Function End Module MainWindow.xaml: 1 2 3 4 Dim firstRow As DataGridRow = grid1.GetRow( 0 ) 'grid1 is your DataGrid control Dim firstColumnInFirstRow As Controls.DataGridCell = DirectCast (grid1.Columns( 0 ).GetCellContent(firstRow).Parent, Controls.DataGridCell) 'set background firstColumnInFirstR

Given that you have a string that you want to split and the separator is two or more spaces. You can achieve using split() or Regex. VB.NET 1 2 3 4 5 6 7 8 Dim str As String = "Rule Name: WhosThere-176.44.28.203" Dim whosThereVar As String Dim whosThereString As String 'using split whosThereVar = str.Split( New String () { " " }, StringSplitOptions.RemoveEmptyEntries)( 1 ).Trim() 'using regex whosThereString = System.Text.RegularExpressions.Regex.Split(str, "\s{2,}" )( 1 ) C# 1 2 3 4 5 string str = "Rule Name: WhosThere-176.44.28.203" ; //using split string whosThereVar = str.Split( new string [] { " " }, StringSplitOptions.RemoveEmptyEntries)[ 1 ].Trim(); //using regex string whosThereString = System.Text.RegularExpressions.Regex.Split(str, @"\s{2,}" )[ 1 ];

In .NET, you can't directly sort a Hashtable object. A tip on sorting a Hashtable object is to cast it to Dictionary then apply LINQ OrderBy() method to the Hashtable object. See examples below: VB.NET 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Private Sub SortHashTableKey () hash = New Hashtable() hash.Add( "B" , 1 ) hash.Add( "A" , 2 ) hash.Add( "C" , 3 ) Dim dict = hash.Cast( Of DictionaryEntry)() _ .ToDictionary(Function(d) d.Key, Function(d) d.Value) _ .OrderBy(Function(e) e.Key) Console.WriteLine( "Sort by Key" ) For Each item In dict.ToList() Console.WriteLine( String .Format( "{0}, {1}" , item.Key, item.Value)) Next Console.WriteLine(Environment.NewLine) End Sub Private Sub SortHashTableValue ()