Infragistics has left a particularly bad taste in my mouth.
I chose infragistics asp.net tools based on my past experience with their windows controls which has overall been good to excellent.
What a mistake to think they would do as well with their aps.net controls. I don't recommend this product to anyone! I opened support issues about their HTML editor and I get responses like, "you have not deployed correctly" This just infurates me. I put in one request about the HTML editor not able to load an html doc. Their response: "We did not design this for large HTML docs". Excuse me? Define "large". No where in their documentation can I find anything about document size limits.
Their update panel does not work when the server is taxed. After five seconds or so, the connection appears to timeout and the client simply doesn't react. In other words, the client does not even receive a timeout notification. It just sits their like it is still waiting for a reponse. Even when a response is received, it is far too slow.
The performance of their update panel has forced us to rewrite several pages using JSON and client side script. It was simply too unreliable.
I think they've outsource their development and/or support based on the names of the people I've had contacts with. This alone explains the drop in quality of their product.
Bottom line: don't buy into the marketing hype. They've got a long way to go.
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