TdxCustomMemData.SaveToStream(TStream) Method

Saves stored data to a stream.

Declaration

procedure SaveToStream(AStream: TStream); dynamic;

Parameters

Name	Type	Description
AStream	TStream	The target stream.

Remarks

Call the SaveToStream procedure to save all stored dataset records to a stream.

Example

The following code example copies data between two memory-based datasets through a stream:

Delphi

var
  AStream: TMemoryStream;
begin
  AStream := TMemoryStream.Create;  // Creates a memory stream
  try
    dxMemData1.SaveToStream(AStream); // Saves data from the first dataset to the created stream
    AStream.Position := 0;  // Resets the current position to 0 after a data save operation
    dxMemData2.DisableControls;  // Disables data synchronization with bound controls
    try
      dxMemData2.LoadFromStream(AStream);  // Loads previously saved data to the second dataset
    finally
      dxMemData2.EnableControls;  // Re-enables data synchronization with bound controls
  finally
    AStream.Free;  // Releases the memory stream regardless of the operation's success
end;

C++

  TMemoryStream *AStream;
  // ...
  AStream = new TMemoryStream();  // Creates a memory stream
  try
  {
    dxMemData1->SaveToStream(AStream);  // Saves data from the first dataset to the created stream
    AStream->Position = 0;  // Resets the current position to 0 after a data save operation
    dxMemData2->DisableControls();  // Disables data synchronization with bound controls
    try
      dxMemData2->LoadFromStream(AStream);  // Loads previously saved data to the second dataset
    __finally
    {
      dxMemData2->EnableControls();  // Re-enables data synchronization with bound controls
    }
  }
  __finally
  {
    delete AStream;  // Releases the memory stream regardless of the operation's success
  }