JsonValue.ReadFrom(InStream) Method

Straipsnis
02/26/2024

Version: Available or changed with runtime version 1.0.

Reads the JSON data from the stream into a JsonValue variable.

Syntax

[Ok := ]  JsonValue.ReadFrom(Data: InStream)

Parameters

JsonValue
Type: JsonValue
An instance of the JsonValue data type.

Data
Type: InStream
The InStream object from which the JSON data will be read.

Return Value

[Optional] Ok
Type: Boolean
true if the read was successful; otherwise, false. If you omit this optional return value and the operation does not execute successfully, a runtime error will occur.

Remarks

This method can fail if the stream is in an invalid state or if the JSON data is malformed. If the operation succeeds, the JsonValue will be disconnected from its current JSON tree and the data contained by the JsonValue will be replaced with the new value. To delete the contents in a JsonValue variable use the Clear function.

Clear(JsonValue)

Example

This example shows how to read JSON data from a stream into a JsonValue variable.

local procedure ReadJson(source : InStream) result : JsonValue
begin
    result.ReadFrom(source);    
end;