TdxCustomMemData.LoadFromTextFile(string) Method

Loads data from a plain text file.

Declaration

procedure LoadFromTextFile(const AFileName: string); dynamic;

Parameters

Name	Type	Description
AFileName	string	The source plain text file previously created by a SaveToTextFile procedure call.

Remarks

Call the LoadFromTextFile procedure to populate the memory-based dataset with data from a plain text file previously created by a SaveToTextFile procedure call. To define a character used as a column separator, use the DelimiterChar property.

Important

SaveToTextFile and LoadFromTextFile procedures depend on the current locale settings. The LoadFromTextFile procedure may not be able to load a text file created on a machine with different locale settings.

To ensure that saved data is loaded correctly regardless of locale settings, use SaveToBinaryFile, SaveToStream, LoadFromBinaryFile, and LoadFromStream procedures instead.

Example

The following code example sets a semicolon as a column separator and copies data between two memory-based datasets through a plain text file.

Delphi

  dxMemData1.DelimiterChar := ';';  // Sets a semicolon as a column separator
  dxMemData1.SaveToTextFile(ExtractFileDir(Application.ExeName) + 'data.txt');
  dxMemData2.DisableControls;  // Disables data synchronization with bound controls
  try
    dxMemData2.DelimiterChar := ';';  // Sets a semicolon as a column separator
    dxMemData2.LoadFromTextFile(ExtractFileDir(Application.ExeName) + 'data.txt');
  finally
    dxMemData2.EnableControls;  // Re-enables data synchronization with bound controls
  end;

C++

  dxMemData1->DelimiterChar = ";";  // Sets a semicolon as a column separator
  dxMemData1->SaveToTextFile(ExtractFileDir(Application->ExeName) + "data.txt");
  dxMemData1->DisableControls();  // Disables data synchronization with bound controls
  try
  {
    dxMemData2->DelimiterChar = ";";  // Sets a semicolon as a column separator
    dxMemData2->LoadFromTextFile(ExtractFileDir(Application->ExeName) + "data.txt");
  }
  __finally
  {
    dxMemData2->EnableControls();  // Re-enables data synchronization with bound controls
  }