READ Function (BigText)

  • [アーティクル]

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.

See Also

Reference

BigText Data Type