private void BuildSchemaTable()
{
bool mustClose = false;
if (this.SelectCommand == null)
{
throw new InvalidOperationException("The DataAdapter.SelectCommand property needs to be initialized.");
}
if (this.SelectCommand.Connection == null)
{
throw new InvalidOperationException("The DataAdapter.SelectCommand.Connection property needs to be initialized.");
}
if (this.schemaTable == null)
{
if (this.SelectCommand.Connection.State == ConnectionState.Closed)
{
mustClose = true;
this.SelectCommand.Connection.Open();
}
try
{
FbCommand schemaCmd = (FbCommand)((ICloneable)this.SelectCommand).Clone();
FbDataReader reader = schemaCmd.ExecuteReader(CommandBehavior.SchemaOnly);
this.schemaTable = reader.GetSchemaTable();
reader.Close();
schemaCmd.Dispose();
schemaCmd = null;
this.CheckSchemaTable();
this.UpdateFormats();
}
catch
{
throw;
}
finally
{
if (mustClose)
{
this.SelectCommand.Connection.Close();
}
}
}
}
