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By default the c-treeDB .NET API pad fixed length string fields FIELD_TYPE.CHARS (FIELD_TYPE.FSTRING), FIELD_TYPE.FPSTRING, FIELD_TYPE.F2STRING and FIELD_TYPE.F4STRING with Nulls ('\0') bytes. The field padding property sets the table pad and field delimiter characters to allow proper target key formation. This property allows the c-treeDB .NET API to operate on files created using the FairCom DB ISAM and low level APIs using a fixed string padding strategy that is different from the c-treeDB .NET API default.
Use CTTable.SetPadChar() to set the pad and field delimiter character. CTTable.GetPadChar() retrieves the current pad and field delimiter character.
// set the table pad and delimiter characters to spaces
try
{
ATable.SetPadChar(' ', ' ');
}
catch (CTException err)
{
Console.Write("Set pad character failed with error {0}\n", err.GetErrorCode());
}
The most common strategies for padding fixed string fields are:
