C# and arrays of anonymous objects
First, let's reformat that code a little:
obj.DataSource = new[]{ new { Text = "Silverlight", Count = 10, Link = "/Tags/Silverlight" }, new { Text = "IIS 7", Count = 11, Link = "http://iis.net" }, new { Text = "IE 8", Count = 12, Link = "/Tags/IE8" }, new { Text = "C#", Count = 13, Link = "/Tags/C#" }, new { Text = "Azure", Count = 13, Link = "?Tag=Azure" } };This does not look like a multi-dimensional array, but rather like an array of 5 objects. These objects inside the array are of an anonymous type, created and initialized using new { ... }.
Concerning your question how you can manually create such an array to suit the data source: you seem to be doing exactly that with the above code.
That's not a multidimensional array. That's an array of objects which have been created using object initializers with anonymous types.
Looks like an array of anonymous types.