READ Function (BigText)
Streams a BigText object that is stored as a BLOB in a table to a BigText variable.
[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.