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  • 大小: 1.18M
    文件類型: .rar
    金幣: 1
    下載: 0 次
    發布日期: 2020-12-26
  • 語言: C#
  • 標簽: Linq??C#??

資源簡介

優選方案是：PredicateExtensions  很方便，很強大

調用示例： 

public static void Test3()  
        {  
            DbDataContext db = new DbDataContext();  
            Expression<Func<TemplateDocument, bool>> expressleft =  
                                 PredicateExtensions.True<TemplateDocument>();  
            expressleft = expressleft.Or(t => t.CategoriesID > 3);  
 
            Expression<Func<TemplateDocument, bool>> expressright =   
                PredicateExtensions.False<TemplateDocument>();  
                                    expressright = expressright.Or(t => t.CategoriesID < 5);  
 
            expressleft = expressleft.And(expressright);  
            var sql = db.GetCommand(db.TemplateDocument.Where(expressleft).Select(t => new {   
                                    t.TemplateID, t.TemplateName, t.CategoriesID })).CommandText;  
            Console.WriteLine(sql);  
 
        }

資源截圖

代碼片段和文件信息 

#pragma?warning?disable?1591
//------------------------------------------------------------------------------
//?
//?????This?code?was?generated?by?a?tool.
//?????Runtime?Version:2.0.50727.1433
//
//?????Changes?to?this?file?may?cause?incorrect?behavior?and?will?be?lost?if
//?????the?code?is?regenerated.
//?
//------------------------------------------------------------------------------

using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Data.Linq;
using?System.Data.Linq.Mapping;
using?System.Linq;
using?System.Linq.expressions;
using?System.Reflection;



public?partial?class?News?:?System.Data.Linq.DataContext
{
	
??#region?Extensibility?Method?Definitions
??partial?void

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????5121??2009-01-16?10:49??mywork\NewsInfo.cs

?????文件????????982??2009-01-16?10:49??mywork\NewsInfo.map

?????文件????1048576??2009-02-05?14:42??mywork\News_Data.MDF

?????文件???????1760??2009-01-19?11:43??mywork\www\Default.aspx

?????文件???????1362??2009-01-19?11:41??mywork\www\Default.aspx.cs

?????文件???????2993??2009-01-19?11:46??mywork\www\edit.aspx

?????文件???????2792??2009-01-19?16:15??mywork\www\edit.aspx.cs

?????文件??????76415??2009-01-16?09:19??mywork\www\NewsInfo.cs

?????文件??????15629??2009-01-16?09:19??mywork\www\NewsInfo.map

?????文件????????805??2009-01-19?11:31??mywork\www\search.aspx

?????文件???????8467??2009-01-16?17:03??mywork\www\web.config

?????文件???????1531??2009-01-19?13:55??mywork\www\ocx\issue\search_advance.ascx

?????文件???????2253??2009-01-19?11:02??mywork\www\ocx\issue\search_advance.ascx.cs

?????文件???????2569??2009-01-19?13:53??mywork\www\ocx\issue\search_table.ascx

?????文件???????2678??2009-01-19?16:09??mywork\www\ocx\issue\search_table.ascx.cs

?????文件???????4311??2008-08-03?22:32??mywork\www\images\button_search.jpg

?????文件???????4203??2008-07-24?10:16??mywork\www\images\search.jpg

?????文件???????4232??2008-03-04?13:54??mywork\www\css\style.css

?????文件?????122880??2008-09-30?22:57??mywork\www\Bin\AspNetPager.dll

?????文件??????11264??2009-02-05?14:31??mywork\www\Bin\NewsInfo.dll

?????文件??????34304??2009-02-05?14:31??mywork\www\Bin\NewsInfo.pdb

?????文件??????13651??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Web.xml

?????文件??????48640??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Web.pdb

?????文件??????32768??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Web.dll

?????文件??????31990??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Common.xml

?????文件?????398848??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Common.pdb

?????文件?????208896??2008-07-18?18:38??mywork\www\Bin\Net.KKcms.Common.dll

?????文件??????89230??2009-01-19?10:34??mywork\www\App_Code\Dynamic.cs

?????文件????????982??2009-01-16?10:49??mywork\www\App_Code\NewsInfo.map

?????文件???????1411??2009-01-19?10:04??mywork\www\App_Code\PredicateExtensions.cs

............此處省略53個文件信息

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