SetLength Method (PgSqlBlob)

In This Topic

Sets length for PgSqlBlob value.

Syntax

Visual Basic
C#


'Declaration Public Overrides Sub SetLength( _ ByVal len As Long _ )


public override void SetLength( long len )

Parameters

len: The size of the PgSqlBlob in bytes.

Remarks

If the given value is less than the current length of the stream, the stream is truncated. If the given value is larger than the current length of the stream, the stream is expanded. If the stream is expanded, the contents of the stream between the old and the new length are undefined.

Example

csharp


PgSqlDataReader pictureReader = myCommand.ExecuteReader(); pictureReader.Read(); PgSqlBlob pictureBlob = pictureReader.GetPgSqlBlob(pictureReader.GetOrdinal("Picture")); if (pictureBlob.Length > 100) pictureBlob.SetLength(100);

PgSqlDataReader pictureReader = myCommand.ExecuteReader();
pictureReader.Read();
PgSqlBlob pictureBlob = pictureReader.GetPgSqlBlob(pictureReader.GetOrdinal("Picture"));
if (pictureBlob.Length > 100)
  pictureBlob.SetLength(100);

Visual Basic


Dim pictureReader As PgSqlDataReader = myCommand.ExecuteReader pictureReader.Read() Dim pictureBlob As PgSqlBlob = pictureReader.GetPgSqlBlob(pictureReader.GetOrdinal("Picture")) If (pictureBlob.Length > 100) Then pictureBlob.SetLength(CLng(100)) End If

Dim pictureReader As PgSqlDataReader = myCommand.ExecuteReader
pictureReader.Read()
Dim pictureBlob As PgSqlBlob = pictureReader.GetPgSqlBlob(pictureReader.GetOrdinal("Picture"))
If (pictureBlob.Length > 100) Then
  pictureBlob.SetLength(CLng(100))
End If

Reference

PgSqlBlob Class
PgSqlBlob Members
Length Property

Send Feedback