d, int maxRecords)
{
if (dataSet == null)
{
throw ADP.FillRequires("dataSet");
}
if (ADP.IsEmpty(srcTable))
{
throw ADP.FillRequiresSourceTableName("srcTable");
}
if (dataReader == null)
{
throw ADP.FillRequires("dataReader");
}
if (startRecord < 0)
{
throw ADP.InvalidStartRecord("startRecord", startRecord);
}
if (maxRecords < 0)
{
throw ADP.InvalidMaxRecords("maxRecords", maxRecords);
}
if (dataReader.IsClosed)
{
return 0;
}
return this.FillFromReader(dataSet, srcTable, dataReader, startRecord, maxRecords, null, null);
}
protected virtual int Fill(DataSet dataSet, int startRecord, int maxRecords, string srcTable, IDbCommand command, CommandBehavior behavior)
{
if (dataSet == null)
{
throw ADP.FillRequires("dataSet");
}
if (command == null)
{
throw ADP.MissingSelectCommand("Fill");
}
if (startRecord < 0)
{
throw ADP.InvalidStartRecord("startRecord", startRecord);
}
if (maxRecords < 0)
{
throw ADP.InvalidMaxRecords("maxRecords", maxRecords);
}
if (ADP.IsEmpty(srcTable))
{
throw ADP.FillRequiresSourceTableName("srcTable");
}
return this.FillFromCommand(dataSet, startRecord, maxRecords, srcTable, command, behavior);
}
其实我们可以看到Fill方法调用了FillFromCommand或FillFromReader方法。这两个方法在下篇文章中在讨论。
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