The User Interface (UI) becomes unresponsive when a time taking operation is executed during an event. Consider the following button click event where I have simulated a time taking operation by calling Sleep method. In a real scenario, it could be some processing which produces the result to be shown back on the user interface.…
There are some tools which convert C# code to JavaScript. Obviously these will only be useful if your code is not tightly coupled with any C# library as the library won’t be available in JavaScript. These conversion tools may come handy for model classes or any other logic which is, for the most part, independent…
Developed a Custom FontDialog as an alternative to the standard .Net FontDialog. Key advantage of CustomFontDialog is the full control over look and feel as it is open source. Source and binary files are available at sourceforge. CustomFontDialog avoids ‘This is not a True Type Font’ exception that affects the standard dialog in some cases. Most probably the exception…
Handle KeyDown event of the TextBox and set the e.Handled property to true if the character is not numeric. Switch cases list all desired characters which will be displayed, rest of the characters are ignored. If additional characters are required, they may be included as switch cases. For instance, negative sign may be allowed…
Chrome browser can be embedded in native application taking a hybrid approach to development where application is partly developed in native technology and partly in web. This has several advantages: Salvage the existing investment in HTML/Javascript projects. The part of application written in web technology is platform independent. This is very important due to variety…
It seems that .Net library doesn’t provide any way to scroll contents of ListBox through code. Selecting an item by setting SelectedIndex automatically scrolls the list to bring the item into view but this may not produce the desired effect. In my case, I wanted to programmatically select an item and make it the first…
I came across a situation where I needed a collection which can hold recently used objects of a particular kind. For instance, recently opened files, recently used fonts or colors etc. Such a list should demonstrate following behavior: List should have a limited size (or call it maximum size). As list grows beyond the maximum…
Pressing of a key is detected and handled in Windows Form using KeyPress, KeyDown or similar events. But these events does not fire when arrow keys are pressed. One way to get around it is to set KeyPreview as true for your Form. In many cases, this also doesn’t work, for instance, when you have…
Download ExcelExportXML-Setup – 221.11 KB Download ExcelExportXML-Source – 328.11 KB Introduction ExcelExportXML is a Microsoft Excel 2010 Add-in that generates XML data from excel sheet. It is developed in Visual Studio 2010 using C#. It is a very simple add-in. To understand how to works, consider an excel sheet having following data. Country Capital Continent…
Using Visual Studio 2010 Professional, creating Excel Add-in is pretty simple. Following are the steps I followed for writing an Add-In for exporting Xml: Step # 1 Create new project of type ‘Excel 2010 Add-in’. The project will have a class file called ThisAddin.cs. Step # 2 For creating a button on the Excel ribbon,…