/// <summary>
/// 单据转换方法
/// </summary>
/// <param name="ctx"></param>
/// <param name="srcFormId"></param>
/// <param name="destFormId"></param>
/// <param name="ruleKey"></param>
/// <returns></returns>
private ConvertRuleElement GetDefaultConvertRule(Context ctx, string srcFormId, string destFormId, string ruleKey)
{
IMetaDataService mService = Kingdee.BOS.App.ServiceHelper.GetService <IMetaDataService>();
var rules = mService.GetConvertRules(ctx, srcFormId, destFormId);
var rule = ruleKey.IsNullOrEmptyOrWhiteSpace() ? rules.FirstOrDefault(p => p.IsDefault) :
rules.FirstOrDefault(t => t.Key.EqualsIgnoreCase(ruleKey) || t.Id.EqualsIgnoreCase(ruleKey));
return(rule);
}