/// <summary>
/// 获取第一个验证错误信息内容
/// </summary>
/// <param name="modelStates">ModelStateDictionary</param>
/// <returns></returns>
public static string FirstModelErrorMessage(this ModelStateDictionary modelStates)
{
if (modelStates == null || modelStates.ErrorCount == 0)
{
return(null);
}
return(modelStates.FirstOrDefault().Value.Errors.FirstOrDefault().ErrorMessage);
}
