dotConnect Universal Documentation
Devart.Data.Universal Namespace / UniBlob Class / Value Property
Example

Value Property (UniBlob)
Gets the value of the UniBlob object.
Syntax
'Declaration
 
Public ReadOnly Property Value As Object
 

Property Value

The value of the UniBlob object.
Remarks
Check the IsNull property before reading the Value property to avoid raising an exception.
Example
This code fragment downloads a BLOB field from a table to a file. Value property is initialized by calling UniDataReader.GetUniBlob method and then written to a stream.
UniBlob myBlob = myReader.GetUniBlob(myReader.GetOrdinal("Picture"));
if(!myBlob.IsNull)
{
  string FN = myReader.GetString(myReader.GetOrdinal("PicName"));
  FileStream fs = new FileStream("D:\\Tmp\\"+FN+".bmp", FileMode.Create);
  fs.Write(myBlob.Value,0,(int)myBlob.Length);
  fs.Close();
  Console.WriteLine(FN+" downloaded.");
}
Dim myBlob As UniBlob = myReader.GetUniBlob(myReader.GetOrdinal("Picture"))
If Not myBlob.IsNull Then
  Dim FN As String = myReader.GetString(myReader.GetOrdinal("PicName"))
  Dim fs As FileStream = New FileStream("D:\Tmp\" + FN + ".bmp", FileMode.Create)
  fs.Write(myBlob.Value, 0, Convert.ToInt32(myBlob.Length))
  fs.Close()
  Console.WriteLine(String.Concat(FN, " downloaded."))
End If
See Also