READ Function (BigText)
Streams a BigText object that is stored as a BLOB in a table to a BigText variable.
Syntax
[Ok := ] BigText.READ(InStream)
Parameters
BigText
Type: BigText
The BigText variable into which you stream the BLOB.
InStream
Type: InStream
The InStream object type that you use to stream a BLOB to a BigText variable.
Property Value/Return Value
Type: Boolean
true if the read transaction was successful; otherwise, false.
Remarks
To delete the content in a BigText variable, use the CLEAR function.
CLEAR(BigText)
Example
This example shows how to stream a BigText that is stored as a BLOB in a table to a BigText variable.
This example requires that you define the following variables.
| Variable | DataType | Subtype |
|---|---|---|
| Bstr | BigText | Not applicable |
| EmployeeRec | Record | Employee |
| Istream | InStream | Not applicable |
EmployeeRec.FIND('-');
EmployeeRec.CALCFIELDS(Picture);
EmployeeRec.Picture.CREATEINSTREAM(Istream);
Bstr.READ(Istream);
Use the CALCFIELDS Function (Record) to calculate the BlobField. A BlobField is a binary large object (maximum size 2 GB) and must be calculated if you want to use it in C/AL or display it in the application.