Jon Gallant's Blog : .net

Solution to the exception: "the data necessary to complete this operation is not yet available" when debugging Windows Mobile apps

jongallant — Wed, 02 Dec 2009 22:36:14 GMT

The exception "the data necessary to complete this operation is not yet available" can mean that the app you are trying to debug is already running on the device. Go to the device, close the app and try again. HTH Jon...(read more)

Solution to the “You tried to assign the Null value to a variable that is not a Variant data type.” Exception

jongallant — Sun, 03 May 2009 04:15:00 GMT

By default the DataSource wizard passes parameters for AutoNumber primary keys. If you are getting this error: You tried to assign the Null value to a variable that is not a Variant data type. Then you need to remove that default parameter. This is what...(read more)

Solution to the “Format of the initialization string does not conform to specification starting at index 0.” Exception

jongallant — Sun, 03 May 2009 02:09:00 GMT

You are probably using the wrong DbConnection class. If you are using Access then make sure you use OleDbConnection, not SqlConnection…and vice versa. Alternatively you could be referencing your MDB file wrong. Here’s the proper way: <connectionStrings>...(read more)

Access Database Membership, Profile, Role and Personalization Providers for ASP.NET

jongallant — Sat, 14 Mar 2009 01:44:30 GMT

ASP.NET doesn’t ship with Membership, Profile, Role or Personalization providers out of the box. Imar Spaanjaars has a great article on how to setup a site using the “Sample Access Providers” provided by Microsoft. http://imar.spaanjaars.com/ http://imar.spaanjaars.com/QuickDocId.aspx?quickdoc=404...(read more)

Binding Hierarchical DataSets to TreeView Controls

jongallant — Tue, 24 Feb 2009 10:59:44 GMT

OOB the ASP.NET TreeView control doesn’t support binding to Hierarchical DataSets. Ralph Varjabedian created a HierarchicalDataSet class to help with this. Read more about it here . Here’s a snippet…it’s simple to implement: TreeView1.DataSource...(read more)

How to reuse TreeNodeCollection in Windows Forums apps

jongallant — Fri, 20 Feb 2009 00:30:21 GMT

I’m creating an app and need the same data set for two tree views. Nodes.AddRange only works with a TreeNode[] and the TreeNodeCollection is read-only and doesn’t have a ctor. I first tried something like this: TreeNode[] nodes = new TreeNode[treeView1.Nodes.Count];...(read more)

Delete all Outlook RSS Feeds

jongallant — Tue, 17 Feb 2009 23:09:29 GMT

My Outlook RSS Feeds were in a really funky state this morning. I had to create a new profile and I had RSS Sync enabled. When that is the case Outlook re-adds all Feeds that you have ever added to the machine back into your profile even if...(read more)

PDC Wrapup - My fav sessions

jongallant — Thu, 06 Nov 2008 02:54:00 GMT

PDC was great this year! Here's a quick list of my favorite sessions of technologies and products that Social Bookmarking will use soon... Stuff we'll use this year: Velocity ADO.NET Data Services Visual Studio 2010 C# 4.0 j Query MVC ASP.NET 4.0 ....Next...(read more)

Short and Sweet "Silverlight 2.0, LINQ and WCF in 5 Minutes" Video

jongallant — Thu, 17 Apr 2008 19:39:44 GMT

Download Source This is the first video in my new "Short and Sweet" video series. I'm going to continue with Silverlight, LINQ and WCF path for the series. Please ping me if you have an idea for a future video. This video takes you through the minimum...(read more)

Reflector add-ins now on CodePlex.com

jongallant — Thu, 08 Mar 2007 02:22:00 GMT

Lutz Roeder's Reflector add-ins are now on www.CodePlex.com http://www.codeplex.com/reflectoraddins...(read more)