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WebAPI InkPicture
  1. Issue
  2.  SnapDevelop
  3.  Web API
0 Votes
  1. Bernhard Giesriegl
  2. SnapDevelop
  3. Wednesday, 28 January 2026 02:46 PM UTC

Hi all,

maybe anybody can help me out of this behavior:

In PB2022 R3 3397 I created a small datawindow containing an ID and a InkPicture based on this table:

 

Datawindow looks like this:

 

Painting, updating and retrieving in PB works fine.

Then, in SnapDevelop 2022 22.2.0.3391 I create a small WebAPI project and convert this DataWindow to a C#Model, this is the result:

I changed double or number types of the retrieving argument to int, as it is not a double.

After scaffolding Service and Controller I start the WebAPI and try out in Swagger.

https://192.168.0.20:7670/api/PurchaseLSTimes/Retrieve/1     as 1 is the number of our ID in the table.

This is the result:

Error: response status is 500
Response body
The string argument 'identifier' cannot be empty.

 

Anybody a suggestion, what this means and what to do?

Thanks in advance

Bernhard

 

 

 

C# Datawindow - The method 'Max' is undefined'
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