Using the northwind.dbml which has already been provided in the WebCombo sample as the Linq to SQL datasource, I have found no problem in in finding apostrophe data. Attached is the simple sample that I used to test this issue. Searching for chef anton's will result in chef anton's Cajun Seasoning autocomplete.

If you have not done so, please use the latest WebCombo 4 and WebUI Framework 3 , which is build 216 and build 704 respectively.  

Thank you for your assistance.  The example you created works fine with using OnInitializeDataSource, however if you follow the Walkthrough: Binding WebCombo to LinqDataSource, it does not work.  Also the live example on the Intersoft website(High Performance Data Retrieval) does not work using the products webcombo.  It does not find chef anton's.  Using the OnInitializeDataSource as in your example is considerably slower with a large database.

Attached is the new sample of WebCombo using Linq DataSource control, I also encounter no issue using such configuration.

We just release a new hotfix, perhaps you could try updating your WebCombo and WebUI Framework to see if it is working with the lateset build.

Edited: 26 Oct 2009

Further analysisin the sample HyperFastWebComboWithLINQToSQLTechnology.aspx has resulted in the issue. The apostrophe data will not be searcahble if the WebCombo is a multiple columns WebCombo. A bug report has been submitted to our developer.

Please let me know as soon as this bug is fixed or there is a work around to the problem, as this function is critical to the application I am developing.

Thanks Again.

We have recently released WebUI Studio 2009 R2 Service Pack 1 which includes the fix for this issue. Please click here to read the official press release.

You could also read which fix or enchancement included in the latest build by visiting the support page and clicking the control name located on the Right Pane "Latest Builds".