TdxCustomMemData.LoadFromTextFile(string) Method

Loads data from a plain text file.

Declaration

delphi

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.

Code Example: Copy Data Between Datasets as Plain Text

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
C++

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;

cpp

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
  }