Nx.DBUtility
2.1.0
dotnet add package Nx.DBUtility --version 2.1.0
NuGet\Install-Package Nx.DBUtility -Version 2.1.0
<PackageReference Include="Nx.DBUtility" Version="2.1.0" />
paket add Nx.DBUtility --version 2.1.0
#r "nuget: Nx.DBUtility, 2.1.0"
// Install Nx.DBUtility as a Cake Addin #addin nuget:?package=Nx.DBUtility&version=2.1.0 // Install Nx.DBUtility as a Cake Tool #tool nuget:?package=Nx.DBUtility&version=2.1.0
A db util for easy sql query
| Product | Versions Compatible and additional computed target framework versions. |
|---|---|
| .NET Framework | net40 is compatible. net403 was computed. net45 was computed. net451 was computed. net452 was computed. net46 was computed. net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
-
- Nx (>= 2.4.1.3)
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//先执行存储过程以支持翻页功能，请勿修改存储过程名称
--用于DBUtility翻页功能 BEGIN
CREATE PROCEDURE [dbo].[sp_DataGroupPageForDuoTable]
@rowcount int output, --总记录数，共有几条信息
@PageSize int, --每页显示记录条数
@PageIndex int, --第几页
@wheresql nvarchar(1000), --SQL条件语句
@ordersql nvarchar(200), --SQL排序语句
@TableName nvarchar(1000), --查询表名称
@filed nvarchar(1000)
AS
declare @mainsql nvarchar(4000)
declare @fieldsql nvarchar(4000)
declare @rownumbersql nvarchar(4000)
declare @exesql nvarchar(4000)
declare @countsql nvarchar(4000)
set @mainsql = @TableName +' where 1=1 ' + @wheresql
set @fieldsql = ' '+@filed+' '
set @rownumbersql = 'select row_number() over('+@ordersql+') as pos,'+@fieldsql+' from '+@mainsql
set @exesql = 'SELECT * FROM ('+@rownumbersql+') AS sp WHERE pos BETWEEN '+str((@PageIndex-1)*@PageSize+1)+' AND '+str(@PageIndex*@PageSize)
set @countsql='select @totalcount=count(*) from '+ @mainsql
print @exesql
exec sp_executesql @countsql,N'@totalcount int out',@rowcount output
SET NOCOUNT ON;
exec (@exesql)
SET NOCOUNT OFF;
--用于DBUtility翻页功能 END
//配置App.config or web.config
<configuration>
<appSettings>
<add key="ConnectionString" value="Data Source=192.168.1.99;Initial Catalog=testdb;User ID=sa;Password=yourpwd"/>
</appSettings>
</configuration>
//Demo
static void Main(string[] args)
{
//翻页读取数据
SqlPagedData pagedData = new SqlPagedData(
startPageIndex: 1,
pageSize: 200,
sqlWhere: " and cid>10000",
tableName: "Client",
sqlOrderBy: " order by cid desc ",
fileds: "cid,tel,email");
while (true)
{
var item = pagedData.Next();
if (item == null)
{
break;
}
//注意这里动态数据的属性，是大小写敏感的。我只测试了sql2005。
//情况1：如果构造函数时传入的fields为星号(*), 那么属性名的大小写必须和数据库字段大小写相同。
//情况2：如果构造函数时传入的fields为自定义，如本例的（cid,tel,email）那么属性名的大小写必须和构造类时传入的参数相同。
Console.WriteLine("{0} {1} {2} i:{3}", item.cid, item.tel, item.email, item.tel + " i:" + pagedData.Position.PageIndex);
}
//如果数据源没有改变，可以随时保留位置以便下次继续处理剩余数据
var pos = pagedData.Position;
//模拟下次处理
pagedData = new SqlPagedData(pos);
while (true)
{
var item = pagedData.Next();
if (item == null)
{
break;
}
Console.WriteLine("{0} {1} {2} i:{3}", item.cid, item.tel, item.email, item.tel + " i:" + pagedData.Position.PageIndex);
}
}