这篇我们学习水晶报表,报表呈现的数据源是IEnumerable<T>.比如下面的数据: using System; using System.Collections.Generic; using System.Linq; using System.Web; using Insus.NET.Models; namespace Insus.NET.Entities { public class MachineEntity { public IEnumerable<Machine> Ma
MS SQL自定义函数IsPositiveInteger 判断字符串是否为正整数,0开始的的数字不算. SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE FUNCTION [dbo].[svf_IsPositiveInteger] ( @string NVARCHAR(MAX) ) RETURNS BIT --函数返BIT数据类型,是数字返回1,非数字返回0. AS BEGIN DECLARE @rtv BIT = 1 DECLA