I don't understand why microsoft left out the DataCombo in VS.NET. Anyway, I use the AxDataCombo which is equivalent. I have a Dataset which contains data from database, the problem is I cannot set the dataset to the DataCombo.RowSource, it complaints invalid type casting, I don't know how can I set the dataset to the DataCombo.RowSource, suppose I have a dataset called Dataset1 and DataCombo named DataCombo1.
I really need help urgently, please help
Thanks,
Thinnakone

Need more information, i.e. the listing of your code. It would be more helpful to know the database type or datasource and to understand what you are attempting to do. Usually when Microsoft removes a function, they usually replace with a new and improved version.

The reason I use DataCombo is because it can display a field and maintain an ID field in the porperty BoundColumn.
for example,
I have an sql query: "Select CustTypeID, CustTypeName from Customer" from SQL server 2000, I want to display CustTypeName as a drop down list for user to choose one. When user choose CustTypeName,I need to retrieve CustTypeID from the current record selected.

Thanks

TokenBug:
I understand now. Your issue is addressed in Chapter 4 with code and very good explanation on pp. 107-112 in the ASP.NET databases Using VB.Net. Downloading the code, is .../Ch04/Using_Listboxes.aspx. In the code, the user selects from a listbox of Employee's LastName with the selected Last Name EmployeeID is saved, using the property lbxEmployees.DataValuerField = "EmployeeID".

This works!!!! This will work for you...

I didn't mean to use the ListBox, I want to use DataCombo which is a drop down box which looks pretty much like a Combobox...
Anyway, I found the answer by myself, here is the link: http://www.akadia.com/services/dotnet_orablobs.html
Thanks for your help, I appriciate that.