If you're using Crystal Reports 2008 in your ASP.NET application, and after deploying to a 64bit server getting following error:
An error has occurred while attempting to load the Crystal Reports runtime. Either the Crystal Reports registry key permissions are insufficient, or the Crystal Reports runtime is not installed correctly. Please install the appropriate Crystal Reports redistributable (CRRedist*.msi) containing the correct version of the Crystal Reports runtime (x86, x64, or Itanium) required. Please go to http://www.businessobjects.com/support for more information.
then switch your application to 32bit mode. In case of Windows 2003/IIS6 entire server will have to be switched, in case of Windows 2008/IIS7 a dedicated 32bit application pool can be established for your application.
Scenario: You're trying to update a template file in your PHPBB 3.0.x forum, for example to include Google Adsense code into overall_header.html file to display banner on top of all the pages. But after modifying and uploading the file nothing changes, board still displays old template.
What is happening - PHPBB displays cached version of the template. Forum software caches commonly used files to improve performance. The solution is to purge cache.
Login to your forum Administration Control Panel and click Run Now in Purge the cache section. After purging is complete changes in your template take effect.
Often there is a need to add client-side Javascript to the ASP.NET page from server-side code. To perform additional manipulation on rendered controls (hide or disable), to show user an alert message - just a couple of examples. Standard ASP.NET approach is to use page's client script manager's RegisterStartupScript method:
Me.ClientScript.RegisterStartupScript (Type, Key, Script, AddScriptTags)
Where
type: The type of the startup script to register.
key: The key of the startup script to register.
script: The startup script literal to register.
addScriptTags: A Boolean value indicating whether to add script tags.
For example:
Me.ClientScript.RegisterStartupScript (Me.GetType(), "alert", "alert('Hello world!');", True)
But if you're using Infragistics controls that offer async postbacks, like WARP panel or UltraWebTab - there is a problem with this approach. Since the page doesn't go through the full postback and doesn't get destroyed and re-rendered from scratch - this method doesn't work. Read more...
Infragistics WebDataMenu is a light-weight highly responsive menu control with rich server and clinet side model. I was using it to display context menu on right mouse click. The code is pretty simple:
function onMouseClick(oEvent) {
if (oEvent.button == 2) { //right mouse button clicked
var menu = $find("xwdmMyMenu");
menu.showAt(null,null, oEvent);
}
}
It checks whether the right mouse button was clicked (line 2) then locates the menu object and shows it using showAt method (which accepts 3 parameters, either X and Y client coordinates, or event object from which it derives coordinates of the mouse click).
It's all well and good, but the problem is - menu always shows down from the location of the mouse click. And if the click is at the bottom of the screen - menu gets cut off:
I needed to make menu expand UP and couldn't find a build-in property or method that would change this behaviour (GroupSettings.ExpandDirection property had no effect). Time for a little hack. Read more...
I was using Infragistics drag-and-drop framework and set an HTML table element as my drop target. Now I needed to know during drag operation over which HTML table cell I am moving. I needed that in order to dynamically change appearance of draggable markup depending on which cell I am currently over.
(Think a strategy game - you're placing construction on the terrain - if there is enough unoccupied room - the draggable item becomes green, otherwise it remains red).
The solution is to use elemAtPoint property during DragMoveHandler event. Read more...
Dundas Charts for .NET has many cool features like async callbacks, AJAX scroll and zoom, plenty of chart types and great visuals, but in some cases some of those features could turn out to be more of a burden than useful. One example - the ability to set chart type for each individual series of a chart. This offers great flexibility in building combination charts (you can display column and line on the same chart to reflect different series' data), but you're losing the Infragistics simplicity of just setting the chart type and binding chart to data without worrying about appearance of each individual series.
This is especially inconvinient if you load chart appearance (including series appearance and chart type) from an external template. If you want to use chart type from the template, but feed it your own data - you're stuck. But there is a solution. Read more...
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