To enable mail merge with custom collection

1. Launch Visual Studio.NET 2008.
2. Click on File menu, then select New and click Web Site.
3. Select ASP.NET Web Site in the Template box and set Location to HTTP.
4. Named the Web Site and click OK.
5. Right-click on Project's name and select New Folder.
6. Named the folder Upload.
7. Right-click on Project's name and select Add New Item.
8. Select WebForm in the My Templates box and named it as Walkthrough.aspx.
9. Drag WebFileUploader instance from ToolBar to WebForm.
10. Set the UploadPath property to the newly created Upload folder, the value of this property should be ./Upload
11. Run the sample in the Web Browser, the entire uploaded file will be located in the upload folder.