Wix 与条件、属性和自定义操作的交互

Question

我在设置对话框上按钮的启用状态时遇到问题。有问题的按钮定义为:

<Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" Height="17" Default="yes" Text="!(loc.WixUINext)">
<Condition Action="disable">Validated = 0</Condition>
<Condition Action="enable"><![CDATA[Validated <> 0]]></Condition>
<Publish Event="EndDialog" Value="Return">1</Publish>
</Control>

属性 Validated 的初始值是 0，正如预期的那样，下一个按钮开始被禁用。

<Property Id="Validated" Value="0"/>

属性本身是通过另一个按钮上的自定义操作修改的。

<Control Id="PerformValidation" Type="PushButton" X="225" Y="75" Width="50" Height="20" Text="Validate">
<Publish Event="DoAction" Value="ValidateDB">1</Publish>
</Control>

使用精简版的自定义操作，例如:

[CustomAction]
public static ActionResult ValidateDatabase(Session session)
{
session.Log("Begin ValidateDatabase");
session["Validated"] = "1";
return ActionResult.Success;
}

我面临的问题是，在自定义操作运行后，下一步按钮不会重新启用。我可以确认 CA 确实运行了，并且该属性已成功设置。如果我执行一些其他操作导致它刷新，UI 将更新，例如返回一个页面然后再次前进到这个页面，下一步按钮将被启用。

关于如何在自定义操作后刷新按钮状态的任何想法？

Answer 1

http://www.mail-archive.com/wix-users@lists.sourceforge.net/msg05097.html提供了一种解决方案，可以在自定义操作之后立即重新发布在自定义操作中更改的属性。

这是我如何让它在我的代码中工作的示例:

<?xml version="1.0" encoding="utf-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
    <Fragment>
        <Binary Id="ConnectionStringExtension.dll" SourceFile="$(var.ConnectionStringExtension.TargetDir)$(var.ConnectionStringExtension.TargetName).CA.dll" />
        <CustomAction Id="MyCustomAction" BinaryKey="ConnectionStringExtension.dll" DllEntry="VerifyConnectionString" Execute="immediate"  />

        <UI>
            <Dialog Id="ConnectionStringDlg" Width="370" Height="270" Title="Database Settings - [ProductName]" NoMinimize="yes">
                <Control Id="ConnectionStringLabel" Type="Text" X="45" Y="73" Width="100" Height="15" TabSkip="no" Text="&amp;Connection String:" />
                <Control Id="ConnectionStringEdit" Type="Edit" X="45" Y="95" Width="220" Height="15" Property="CONNECTION_STRING" Text="{200}" />
                <Control Id="Back" Type="PushButton" X="180" Y="243" Width="56" Height="17" Text="&amp;Back">
                </Control>
                <Control Id="Next" Type="PushButton" X="236" Y="243" Width="56" Height="17" Default="yes" Text="&amp;Next">
                    <Condition Action="enable"><![CDATA[CONNECTION_STRING <> "" AND CONNECTION_STRING_VALID = "1"]]></Condition>
                    <Condition Action="disable"><![CDATA[CONNECTION_STRING = "" OR CONNECTION_STRING_VALID = "0"]]></Condition>
                </Control>
                <Control Id="Cancel" Type="PushButton" X="304" Y="243" Width="56" Height="17" Cancel="yes" Text="Cancel">
                    <Publish Event="SpawnDialog" Value="CancelDlg">1</Publish>
                </Control>
                <Control Id="BannerBitmap" Type="Bitmap" X="0" Y="0" Width="370" Height="44" TabSkip="no" Text="WixUI_Bmp_Banner" />
                <Control Id="Description" Type="Text" X="25" Y="23" Width="280" Height="15" Transparent="yes" NoPrefix="yes">
                    <Text>Please enter database configuration</Text>
                </Control>
                <Control Id="BottomLine" Type="Line" X="0" Y="234" Width="370" Height="0" />
                <Control Id="Title" Type="Text" X="15" Y="6" Width="200" Height="15" Transparent="yes" NoPrefix="yes">
                    <Text>{\WixUI_Font_Title}Database Settings</Text>
                </Control>
                <Control Id="BannerLine" Type="Line" X="0" Y="44" Width="370" Height="0" />
              <Control Id="VerifyButton" Type="PushButton"  Width="56" Height="16" X="45" Y="118" Text="Verify">
                <Publish Event="DoAction" Value="MyCustomAction">1</Publish>
                <Publish Property="TEMP_VERIFIED" Value="[CONNECTION_STRING_VALID]">1</Publish>
                <Publish Property="CONNECTION_STRING_VALID" Value="[TEMP_VERIFIED]" />
              </Control>
            </Dialog>
        </UI>
    </Fragment>
</Wix>

CustomAction 将 CONNECTION_STRING_VALID 的值设置为 1 或 0，具体取决于它是否有效，我在别处定义了默认值为 0

<Property Id="CONNECTION_STRING_VALID" Value="0" />

现在，当我单击验证按钮时，如果字符串有效，则启用下一步按钮