.NET GENES

A question was raised on vbforums on how to invoke click a button using WPF webbrowser control. This sample loads google.com page and writes a sample text on the textbox and then invoking the click button. HTMLDocument document = (HTMLDocument)wbGetHost.Document; foreach (IHTMLElement myelem in document.getElementsByTagName( "input" )) { if (myelem.id != null ) { if (myelem.id.Equals( "lst-ib" ) && myelem.className.Equals( "lst lst-tbb" ) && !document.documentElement.innerHTML.ToLower().Contains( "wikipedia" )) { HTMLInputElement el = myelem as HTMLInputElement; el. value = "Bill Gates" ; HTMLInputElement searchButton = (HTMLInputElement)document.all.item( "btnK" , 0); searchButton.click(); break ; } } } Greg

In an application using Controller factory, i encountered an error as stated in the title. My MVC does not have a favicon.ico. The solution is to add a parameter constraint that does not allow .ico filenames in your routes. I got the solution from forums.asp.net routes.MapRoute( "Default" , // Route name "{controller}/{action}/{id}" , // URL with parameters new { controller = "ProductView" , action = "Index" , id = "" }, // Parameter defaults new { controller = @"[^\.]*" } // Parameter constraints (regex/string expression) );

Here's a query to count number of repeating records based from union all query. Union all query does not remove duplicate records. Here's a sample script: select resultsduplicate.url as job_item, count (resultsduplicate.url) as repeat_occurence from ( SELECT url FROM mainTable where id = 47 and url like '%testsite.com%' and _active = 1 UNION ALL SELECT url FROM detailTable where id = 47 and url like '%testsite.com%' and _active = 1 )resultsduplicate group by resultsduplicate.url having ( count (resultsduplicate.url) >1); Original Source From (Stackoverflow.com)

I have searched for content types which is suitable for ASP.NET or ASP.NET MVC applications using the HttpResponse class ContentType property. Here's the website with the MIME list: Mime Type List Here's a sample asp.net/mvc snippet. HttpResponseBase response = context.HttpContext.Response; response.ContentType = "application/pdf" ; Greg

The problem was that the windows 7 theme was changed to classic window . Turning it back to Windows 7 default view, solved it. Greg

Given you have two WPF windows namely MainWindow and OtherWindow. You basically want to check if the controls in main window have successfully loaded using statements in OtherWindow. The solution is to use Application dispatcher object. if (Application.Current.Dispatcher.CheckAccess()) { while ( true ) { foreach (Window window in Application.Current.Windows) { if (window.Title.Equals( "Project Title" )) { if (window.FindName( "your_control" ) != null ) { //do your stuff here... } } } break ; } } else { Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Background, new Action(CheckMainWindow)); } Cheers!

In our web crawlers, we encountered slow crawling of items specially XML feeds. We checked our codes if there are lines generating bottlenecks. It turned out that we placed GC.Collect() in an inner loop that's processing item per item. The solution is to comment out GC.Collect() in the inner loop and transfer it to the outer loop statement. Here's the code: while (!EndOfPage) { do { if (date != String.empty) { //comment this statement, transfer outside inner loop... //GC.Collect(); //processing of items code statements... } } while (!(url.Equals(String.Empty))); GC.Collect(); PageNo++; if (PageNo > totalPage) { EndOfPage = true ; } } Credits to my fellow developer for the discovery. Greg

Yesterday, while working on Regex Index property, I encountered a weird problem. Supposedly, string.indexOf(string variable) returns -1 value if there's no occurrence of such substring. However, using Regex.Match(source.ToLower(), @"regex pattern" ).Index returns 0 if instead of -1 if no such substring occurs. The solution was pointed out in stack overflow: Return index position of string after match found using Group.Success in which case returns a boolean value. So, here's the tip: if ((Regex.Matches(source.ToLower(), @"<ol[^>]*>" ).Count < 1) && (Regex.Matches(source.ToLower(), @"<ul[^>]*>" ).Count > 0)) { if (Regex.Match(source.ToLower(), @"<ul[^>]*>" , RegexOptions.IgnoreCase).Success) { // your if statements here.... :) } } Greg

Here's a simple class implementation of a DatagridviewCheckboxColumn. public class DatagridviewCustomCheckboxColumn : DataGridViewCheckBoxColumn { public DatagridviewCustomCheckboxColumn() { this .CellTemplate = new DatagridviewCheckboxCustomCell(); } } class DatagridviewCheckboxCustomCell : DataGridViewCheckBoxCell { public int row_index { get ; set ; } public int CheckboxHeight { get { //your_desired_checkbox_height is a variable //that contains the desired height of your checkbox //you may set or get the property value.. return your_desired_checkbox_height; } } public int CheckboxWidth { get { //your_desired_checkbox_width is a variable //that contains the desired width of your checkbox //you may set or get the property value.. return your_desired_che

This is based from the article of Vincent Maverick Durano's blog on HIGHLIGHT GRIDVIEW ROW ON CLICK AND RETAIN SELECTED ROW ON POST BACK. I just added some statements on javascript to check if the selected row is less than total gridview row count and server side code for paging. JAVASCRIPT CODE: <script type= "text/javascript" > var prevRowIndex; function ChangeRowColor(row, rowIndex) { var parent = document.getElementById(row); var currentRowIndex = parseInt(rowIndex) + 1; //count number of gridview rows var rowscount = $( "#<%=grdCustomer.ClientID %> tr" ).length; if (prevRowIndex == currentRowIndex) { return ; } else if (prevRowIndex != null ) { parent.rows[prevRowIndex].style.backgroundColor = "#FFFFFF" ; } //check if current index is a number... if (IsNumeric(currentRowIndex)) { //check if row index