小编Ric*_*chC的帖子

我如何在Linq to SQL中做一个案例(请访问vb.net).

在SQL中它将是这样的:

SELECT 
CASE
  WHEN condition THEN trueresult
  [...n]
[ELSE elseresult]
END

我如何在Linq to SQL中执行此操作？

这样的事情可能吗？

Namespace Transaction, Document

    Class Signer

        Public Sub New()
            'Do Work
        End Sub

    End Class

End Namespace

我基本上希望能够从任一命名空间实例化Signer类.原因是我错误地将它设置在Transaction类中,需要将其迁移到Document类,而不会破坏现有的遗留代码.如果可能的话,我宁愿在两个命名空间中没有相同的Signer类.

任何人都知道如何使用iTextSharp以编程方式将PDF保存为较低的PDF版本,以便您可以使用某些要求PDF为5或更低版本的iTextSharp功能？

我正在尝试将两个PDF版本7文档合并在一起,它坚持认为它们是版本5或更低版本.

如何为使用DLL的人在程序集(DLL)之外创建一个属性"ReadOnly",但是仍然能够从程序集中填充该属性以供他们阅读？

例如,如果我有一个Transaction对象需要在Transaction对象中发生某些事情时填充Document对象(它是Transaction类的子类)中的属性,但我只想开发人员使用我的DLL只是能够读取该属性而不是更改它(它应该只在DLL本身内更改).

我想使用共享相同XML数据源的嵌套转发器,其中父转发器将数据源传递给子转发器,因此它不需要为父转发器中的每个数据项重新访问数据源.

父转发器的XPATH:"/ AdpDeselection/Documents/Document [@ type ='A']/Funds/Fund [@ cuspid ='1234']"

我将在下面的代码中为子Repeater中的DataSource属性添加什么？

我不想使用OnItemDataBound,因为我不认为它需要它,但我想我可能是错的.

    <asp:XmlDataSource ID="xdsCurrentFunds" runat="server" DataFile="~/App_Data/CustomApps/DeselectOptions.xml" />

    <asp:Repeater ID="rptCurrentFund" runat="server" OnItemDataBound="rptCurrentFund_ItemDataBound" DataSourceID="xdsCurrentFunds">
        <ItemTemplate>
            <div class="CurrentFund"><%# XPath("@name")%></div>
            <asp:HiddenField ID="hdnID" runat="server" Value='<%# XPath("@cuspid")%>' />
            <asp:Repeater ID="rptReplacementFunds" runat="server" DataSource='WHAT SHOULD I PUT HERE TO GET THE DATASOURCE?'>
                <ItemTemplate>
                    <div class="ReplacementFund"><%# XPath("@ticker")%></div>
                </ItemTemplate>
            </asp:Repeater>
        </ItemTemplate>
        <SeparatorTemplate>
            <br />
        </SeparatorTemplate>
    </asp:Repeater>

XML结构......

<Deselection>
    <Documents>
        <Document type="A">
            <Funds>
                <Fund cuspid="1234" name="CURRENT FUND NUMBER ONE">
                    <ReplacementFunds>
                        <Fund ticker="ABCD" cuspid="56785678">FUND NUMBER ONE</Fund>
                        <Fund ticker="EFGH" cuspid="23452345">FUND NUMBER TWO</Fund>
                    </ReplacementFunds>
                </Fund> …

我可以循环遍历多重嵌套对象集合，同时仍显示在同一个表中吗？

<table v-for="d in transaction.documents">
    <tbody>
        <tr>
            <th>Document ID:</th>
            <td>{{ d.id }}</td>
        </tr>
    </tbody>
    <tbody v-for="t in d.tasks">
        <tr>
            <th>Task ID:</th>
            <td>{{t.id}}</td>
        </tr>
    </tbody>
    <tbody v-for="a in t.actions">  <!-- t is no longer available because it's not still in the same <tbody> -->
        <tr>
            <th>Action ID:</th>
            <td>{{ a.id) }}</td>
        </tr>
    </tbody>
</table>

我需要按照这些思路做一些事情，但这是无效的 HTML。

<table v-for="d in transaction.documents">
    <tbody>
        <tr>
            <th>Document ID:</th>
            <td>{{ d.id }}</td>
        </tr>
    </tbody>
    <tbody v-for="t in d.tasks">
        <tr>
            <th>Task ID:</th>
            <td>{{t.id}}</td>
        </tr>
        <tbody v-for="a in t.actions"> …

我如何b-table根据更改数据模型的某些事件在下面的 BootstrapVue示例中显示/隐藏列。

<template>
  <button @click="showHideAge=!showHideAge">Show/Hide Age</button>
  <b-table striped hover :items="items"></b-table>
</template>

<script>
const items = [
  { isActive: true, age: 40, first_name: 'Dickerson', last_name: 'Macdonald' },
  { isActive: false, age: 21, first_name: 'Larsen', last_name: 'Shaw' },
  { isActive: false, age: 89, first_name: 'Geneva', last_name: 'Wilson' },
  { isActive: true, age: 38, first_name: 'Jami', last_name: 'Carney' }
]

export default {
  data () {
    return {
      items: items,
      showHideAge: true
    }
  }
}
</script>

当我的数据库中的表具有PK/FK关系(int)时,当它们由实体框架设计器建模时,一切都应该如此.我可以编写下面的代码,一切似乎都可以正常工作但是当我运行代码时,我在项目上得到一个错误.Status.StatusName说Object引用没有设置为对象的实例.我想我的印象是,当您填充父实体时,框架会填充关联的实体.

    Dim db As New MyDbModel.MyDbEntities()

    Dim project As MyDbModel.Project = (From p In db.Project Where p.ProjectID = 1).First

    Response.Write(project.ProjectName)        
    Response.Write(project.Status.StatusName)

我似乎无法弄清楚如何使用Inno Setup(下面)运行此代码.我正在尝试安装IIS7 +.如果我直接在cmd提示符下运行它,它运行正常,但由于开头的"开始"部分,我有点困惑如何从Inno安装程序运行它.我可以运行我需要的任何其他exe,但pkgmgr.exe看起来不好玩.

start /w pkgmgr /l:log.etw /iu:IIS-WebServerRole;IIS-WebServer;IIS-CommonHttpFeatures;IIS-StaticContent;IIS-DefaultDocument;IIS-DirectoryBrowsing;IIS-HttpErrors;IIS-HttpRedirect;IIS-ApplicationDevelopment;IIS-ASPNET;IIS-NetFxExtensibility;IIS-ASP;IIS-CGI;IIS-ISAPIExtensions;IIS-ISAPIFilter;IIS-ServerSideIncludes;IIS-HealthAndDiagnostics;IIS-HttpLogging;IIS-LoggingLibraries;IIS-RequestMonitor;IIS-HttpTracing;IIS-CustomLogging;IIS-Security;IIS-BasicAuthentication;IIS-URLAuthorization;IIS-RequestFiltering;IIS-IPSecurity;IIS-Performance;IIS-HttpCompressionStatic;IIS-HttpCompressionDynamic;IIS-WebServerManagementTools;IIS-ManagementConsole;IIS-ManagementScriptingTools;IIS-ManagementService;IIS-IIS6ManagementCompatibility;IIS-Metabase;IIS-WMICompatibility;IIS-LegacyScripts;IIS-LegacySnapIn;WAS-WindowsActivationService;WAS-ProcessModel;WAS-NetFxEnvironment;WAS-ConfigurationAPI

更新1

我试过这段代码并得到以下错误:

[Run]
Filename: "{sys}\pkgmgr.exe"; Parameters: "/l:log.etw /iu:IIS-WebServerRole;IIS-WebServer;IIS-CommonHttpFeatures;IIS-StaticContent;IIS-DefaultDocument;IIS-DirectoryBrowsing;IIS-HttpErrors;IIS-HttpRedirect;IIS-ApplicationDevelopment;IIS-ASPNET;IIS-NetFxExtensibility;IIS-ASP;IIS-CGI;IIS-ISAPIExtensions;IIS-ISAPIFilter;IIS-ServerSideIncludes;IIS-HealthAndDiagnostics;IIS-HttpLogging;IIS-LoggingLibraries;IIS-RequestMonitor;IIS-HttpTracing;IIS-CustomLogging;IIS-Security;IIS-BasicAuthentication;IIS-URLAuthorization;IIS-RequestFiltering;IIS-IPSecurity;IIS-Performance;IIS-HttpCompressionStatic;IIS-HttpCompressionDynamic;IIS-WebServerManagementTools;IIS-ManagementConsole;IIS-ManagementScriptingTools;IIS-ManagementService;IIS-IIS6ManagementCompatibility;IIS-Metabase;IIS-WMICompatibility;IIS-LegacyScripts;IIS-LegacySnapIn;WAS-WindowsActivationService;WAS-ProcessModel;WAS-NetFxEnvironment;WAS-ConfigurationAPI"; Description: "Install IIS";

Operation failed with 0x8007000B An attempt was made to load a program with an incorrect format.

如果我start /w pkgmgr...在cmd提示符下运行原始行,则会完美地安装它.(我有一个带有干净快照的虚拟机,每次运行测试之前都会恢复到该虚拟机)

更新2
包括Inno Setup记录错误

...
2013-04-19 09:21:04.813   Filename: C:\Windows\system32\pkgmgr.exe
2013-04-19 09:21:04.813   Parameters: /l:log.etw /iu:IIS-WebServerRole;IIS-WebServer;IIS-CommonHttpFeatures;IIS-StaticContent;IIS-DefaultDocument;IIS-DirectoryBrowsing;IIS-HttpErrors;IIS-HttpRedirect;IIS-ApplicationDevelopment;IIS-ASPNET;IIS-NetFxExtensibility;IIS-ASP;IIS-CGI;IIS-ISAPIExtensions;IIS-ISAPIFilter;IIS-ServerSideIncludes;IIS-HealthAndDiagnostics;IIS-HttpLogging;IIS-LoggingLibraries;IIS-RequestMonitor;IIS-HttpTracing;IIS-CustomLogging;IIS-Security;IIS-BasicAuthentication;IIS-URLAuthorization;IIS-RequestFiltering;IIS-IPSecurity;IIS-Performance;IIS-HttpCompressionStatic;IIS-HttpCompressionDynamic;IIS-WebServerManagementTools;IIS-ManagementConsole;IIS-ManagementScriptingTools;IIS-ManagementService;IIS-IIS6ManagementCompatibility;IIS-Metabase;IIS-WMICompatibility;IIS-LegacyScripts;IIS-LegacySnapIn;WAS-WindowsActivationService;WAS-ProcessModel;WAS-NetFxEnvironment;WAS-ConfigurationAPI
2013-04-19 09:21:07.372   Process exit code: 11
2013-04-19 09:21:07.372   Need to restart Windows? No
2013-04-19 09:21:08.464   Deinitializing Setup.
2013-04-19 09:21:08.479   Log closed.

更新3
我添加了mirtheil建议的代码(带有几个小的语法调整),我越来越近了!

Filename: "pkgmgr"; Parameters: "/l:log.etw …

我当前可以根据控制器中的布尔条件显示/隐藏元素.如果条件为真,我怎么能淡出元素而不是立即隐藏它？

<div id='conversion-image' ng-hide="pages.length > 0">
    generating pages...
    <br />
    <img src='Images/ajax-loader-blue.gif' />
</div>

我也已经包含了ngAnimate的依赖性.

var app = angular.module("app", ["ngAnimate"]);