void Command_Table_AddColumn(AddColumnDialog.Result result)
{
var table = GetTable();
var variables = GetTableVariables(table);
var results = new NEExpression(result.Expression).EvaluateRows<string>(variables, table.NumRows);
table.AddColumn(result.ColumnName, results);
SetText(table);
}
static public Result Run(Window parent, NEVariables variables, int numRows)
{
var dialog = new AddColumnDialog(variables, numRows) { Owner = parent };
return dialog.ShowDialog() ? dialog.result : null;
}