Hello guys, welcome to the third session of the SP dotnet VBA. In this lesson we will learn about the parameter binding. For behavior of the SP dotnet we is that it will retrieve the simple type value from the Ura. And for the complex type it will try to read the value from the message body by using the media type formatter. If you want to override the default behavior and the force vi to read the complex type from the UI, then we need to use the from your eye attribute along with the our parameter. And if you want to force the VBA to read the symbol type from the body then we need to use the from body attribute to the our parameter.
Let's wish to visit should go to less than or shoot this with the example. First of all we need to comment all the configuration that we are setting up in the our previous session. And open the controller that we are created. You can see that we are used the from body attribute in the our post as well as the output method where we are retrieving the complex type value. However, it was optional. Let's see.
I'm going to delete this attribute. And really also listen. Let's switch to postman and select the post request body and I'm going to paste the JSON structure for the product class and change it up menzer into the ink and click on DSN. You can see that it redone the year 201 status means that our protocols are created successfully. However, we are not specifying the from body attribute here. Because of ASP dotnet we will be automatically try to retrieve the value of the complex type from the message body.
Let's modify the output method such that it will refer to the simple type that is integer from the body and the product that is a complex type. For this we need to use the from body attribute along with the integer type and the formula for the our product. We'll do a solution. Let's switch to postman app. In the previous example, we are added the input to our database which IDs attend now we are going to update the So name into the blowing. For this we need to use the ID that is 10 select the put method by the ID 10 and modify the our data link and click on the SN you can see that it returned the 400 bad request.
And with the method that the parameter contained D and our entry for the ID was off we specify that the what it will be presenting the body and the complex type that is a product will be present in the UI. That's why SP dotnet VBA will try to read the ID from the body and if it was unable that's that's why it gender 0400 status. Let's modify the request. Write the question mark or using the query string name a call to lowing amberson on dt equal to 20 amberson block size equal to 10 amberson is equal to 12 and within body we just need to write the ad that is and I'm going to send it you can see that it didn't the 200 status and our new object content the name blowing. Let's see in the our database. Here it is, it also updating the database.
For returning the complex type from the UI we need to use the from UI attribute and for retrieving the simple type from the body we need to use the from body attribute. Here is the our example in which we are retrieving the complex type that is a problem. From the Ura and the interior that is the Cymbalta from the body. Thanks for watching. Have a nice day.