Crystal Report Viewer Error in ASP.Net

Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))

System.Runtime.InteropServices.COMException: Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))
Solution

1. Go To xxx.rpt and click at the fields eplorer.
2. Select the Database fields.
3. Right Click the table for Set Datasource Location.
4. Match The Tables in Current Data Source and Replace With for Update. Click Close
5. Verify Database.
6. The Database is uptodate message will appear and hopefully no error after this.

Asynchronous Methods PART-2

Everybody would agree that asynchronously-served requests are important for the performance of potentially-lengthy operations. Taking this point to the limit, Windows 8 is highly dependent upon asynchronous operations and that is the preferred way of coding in the newest platform.

So what’s the real benefit of implementing asynchronous requests?

The benefits of asynchronous requests are entirely for the server environment. In ASP.NET, async HTTP handlers keep the server runtime much more responsive by guaranteeing that a larger number of threads are available at any time to serve requests. In the end, it won’t so much be the requests for long-running tasks that benefit from async handlers, but all other requests, for images, scripts, and other static and ASPX pages. In this way, the site remains highly responsive for all users and long-running requests will still take their time to complete.