This was one weird mystery. I have used ASP.NET’s method ClientScript.RegisterStartupScript countless times to inject client-side JavaScript into page’s markup from the server-side code and it always worked perfectly. This time I created a very basic page from scratch:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>My Page</title>
<script type="text/javascript" src="script1.js" />
<script type="text/javascript" src="script2.js" />
<script type="text/javascript" src="script3.js" />
</head>
<body>
<form id="xfrmMain" runat="server">
</form>
</body>
</html>
And then injected client-side script into it:
ClientScript.RegisterStartupScript(Me.GetType, "JSCode", "ProcessData();", True)
where ProcessData() is function from one of the scripts, loaded in the HEAD tag. The script injected just fine, I got a beautiful insert at the bottom of the rendered page:
<script type="text/javascript">
//<![CDATA[
ProcessData();//]]>
</script>
The problem was – it didn’d do squat – the script did not execute. Why? Continue reading 'ClientScript.RegisterStartupScript: script injected, but not executed'»
I’ve been successfully using manual load on demand in WebHierarchicalDataGrid for a while now, but recently noticed strange thing. The deeper in grid’s hierarchy I expanded the children – the slower it went.
In my case every time user clicks [+] to expand a row, VB.NET code calls an SQL Server Stored procedure to bring in child rows. I grew suspicious and fired up SQL Profiler. What I saw surprised me. Number of calls to the stored procedure increased the deeper in grid’s hierarchy I expanded the children. When I clicked [+] on the root level it resulted in 1 SP call. Clicking [+] on the child to expand grandchild – 2 calls. Expanding grandchild to see grand-grandchild rows – 3 calls, etc. Continue reading 'WHDG: RowIslandsPopulating event fires multiple times'»
If after upgrading to a new version of Infragistics NetAdvantage you suddenly found your WHDG sprouting an extra blank row on top:
most likely it’s because grid’s ItemCssClass property is used. In theory (at least according to ever so verbose documentation) it should define what grid’s cells look like. In practice it have no effect whatsoever. Or rather had no effect until upgrade (verified in version 2011.1, perhaps even earlier). Now if your CSS class used in this property contains HEIGHT attribute – a blank row of that height will be inserted on top of the grid.
Solution? Remove ItemCssClass property. It’s useless anyway.
This is the second post in saga titled Upgrading Infragistics Controls to a new version. Chances are that your WebDataMenu looks weird after upgrade to 2010+ version. In my case the menu had following options/features:
- It was a context popup menu, called on right mouse click
- Text of menu items was assigned dynamically at runtime in JavaScript Client code
After upgrading NetAdvantage from version 2009.2 to 2011.1 strange things started to happen. Text of the menu items was cut short, submenues appeared at wrong places it looked like something from a Dali’s painting.
Numerous experiments later I found out that the problem was with EnableScrolling property of the menu control. Setting it to False returned menu to realm of realism.
Upgrading 3rd party library to a new version is bound to have problems and Infragistics is no exception. In my case I was upgrading NetAdvantage for ASP.NET from version 2009.2 to to 20011.1 and right away WebHierarchicalDataGrid started to crash client-side. If ScriptManager was in debug mode I’d get error:
Microsoft JScript runtime error: Sys.ArgumentUndefinedException: Value cannot be undefined.Parameter name: type
With ScriptManager in Release mode it’d be:
Microsoft JScript runtime error: Object expected
But always in Sys.Component.Create – it looked like grid’s client-side scripts weren’t loading at all. After A LOT of digging I found out that the culprit was grid’s server-side Bands.Clear() method. When called, it caused client-side WHDG JavaScript not to load. When that method was commented – JavaScript errors disappeared. So until Infragistics comes out with a bug fix – if you experience similar problem, try to avoid Bands.Clear() method.
Scenario: You’re trying to run an ASP.NET application when suddenly an error is thrown similar to this:
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0016: Could not write to output file ‘c:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\……..\………\some_code.dll’ — ‘Access is denied. ‘
You gave that folder all possible permissions imaginable and still the error persist. What the? Continue reading 'Solution for ASP.NET access to temporary folder denied error'»
Back in April I opened a hosting slot at Feral Hosting. It’s been a beautiful 4 months, exceptional service, tons of space and bandwidth. Unfortunately after provider changed a few HTTP settings my blogs were essentially killed dead. Unable to resolve problem there I had to move.
Goodbye Feral Hosting. Hello Market Juice.
While connecting from an ASP.NET application to an Oracle database via OLEDB I got following error:
OraOLEDB.Oracle Provider is not registered on the local machine
Now I know that the driver was installed and registered. I downloaded an official driver from Oracle WebSite. In my case it was ODAC112021Xcopy_x64.zip 64-bit version for XCopy deployment. It installs in 2 easy steps:
- Unzip downloaded file into any folder
- Run (as administrator) command: INSTALL TYPE PATH NAME DEPENDANCIES
Where
- TYPE – type of installation (e.g. OLEDB, basic etc.)
- Path – where you want driver installed
- Name – Oracle home name
- Dependencies – true/false whether to install dependencies (e.g. instant client)
So my command was
INSTALL ALL “C:\Program Files\Oracle64Driver” Oracle64Driver TRUE
Which copied the files and created correct Registry entries (I checked). And still I was getting the error. I Googled it (a lot) but majority of suggestions was that the error is due to Windows ACL and correct permissions should be set on the driver folder. Didn’t help me.
So I fired up trusted ProcessMonitor and it showed that W3WP.EXE (ASP.NET process) was trying to access missing OCI.DLL file in the path C:\Program Files\Oracle64Driver\Bin, e.g. in the Bin folder of the path were the driver was installed. Looking back at the place were I unzipped the original driver files I found that DLL inside of “instantclient” folder. So I copied entire content of that folder into Bin folder at the destination. And Voila! The error disappeared.
Apparently Instant Client files aren’t copied by the installer even when Dependencies option is set to true.
I am using FeedWordPress plugin on some of my sites to pull data from Google News RSS feeds. It was working fine, but after I moved to a new host, I started to get errors like:
Failed to connect to 2a00:1450:8006::63: Network is unreachable
Note the IPv6. Google have been supporting it for a while and news.google.com resolves to IPv6 first (similar error happens in WordPress admin dashboard in “Incoming Links” section). Unfortunately network of my new host didn’t support IPv6, so I had to find solution to force WordPress to use IPv4. Enter class-http.php. Continue reading 'Solution for WordPress CURL IPv6 error “Network is unreachable”'»
Two years ago I switched to BlueHost. For a while it’s been a beautiful run, but lately the service has become horrible. Constant downtimes, and when sites were up they we unbelievable slow. So after a couple of MySQL DBs export/imports, after moving DNS hosting to my registrar GKG.NET – it’s:
Goodbye BlueHost, Hello Feral Hosting.
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