Perform the following steps:
- In our previous recipe, we created the HTTPTrigger function using Visual Studio. Let's build the application by clicking on Build and then Build Solution.
- Open the HTTPTriggerCSharpFromVS.cs file and create a breakpoint by pressing the F9 key, as shown in the following screenshot:

- Press the F5 key to start debugging the function. When you press F5 for the first time, Visual Studio prompts you to download Visual Studio CLI tools if they aren't already installed. These tools are essential for executing an Azure Function in Visual Studio:
The Azure Function CLI has now been renamed to Azure ...