Update asp.net WebService reference from wsdl file?

Follow these steps.

1. Open the Solution/Project in Visual Studio

2. Right Click on Solution Explorer on the project for which you want to add web reference.

3. Select Add Service Reference. (This will open a Add Service Reference dialogue box.)

4. Click on Advanced... button located at bottom of the dialogue box. (This will open another dialogue box named Service Reference Settings.)

5. Click on Add Web Reference button located at bottom of the dialogue box. (Again a dialogue box Add Web Reference would appear.)

6. Enter OR Copy & Paste full path for the WSDL file from your local drive as the URL.

7. Click on Go button besides the URL box.

8. Edit Web Reference Name if you want to.

9. Click on Add Reference.

And you are done.

It's been long time from accepted answer. If you are using VS2019 you can simply click on the service and select "Update..."