我一直在疯狂地想弄清楚为什么视图没有更新。从我在网上看到的所有帖子中我都认为我做得对,但我一直得到Null错误。如果我尝试使用session.Database.FilePath以这种方式加载数据库,则表明FilePath为null。视图本身返回Dummy Row,因此数据库就在那里。这很奇怪。
以下属性
<Property Id="IIS_SITE" />
二进制和自定义操作
<CustomAction Id="UpdateComboBoxes" DllEntry="UpdateComboBoxes" BinaryKey="UpdateComboBoxes" Execute="immediate" Return="check" />
<Binary Id="UpdateComboBoxes" SourceFile="..\ProjectName.CustomActions\bin\Release\ProjectName.CustomActions.CA.dll"/>
安装UI序列
<InstallUISequence>
<Custom Action="UpdateComboBoxes" Before="CostFinalize"></Custom>
</InstallUISequence>
控件
<Control Id="IisSite" Type="ComboBox" Sorted="yes" ComboList="yes" Property="IIS_SITE" X="45" Y="85" Width="220" Height="18" >
<ComboBox Property="IIS_SITE" >
<ListItem Text="Dummy" Value="Dummy"/>
</ComboBox>
</Control>
自定义操作
[CustomAction]
public static ActionResult UpdateComboBoxes(Session session)
{
session.Log("Begin Custom Action UpdateComboBoxes");
try
{
session.Log(string.Format("Database Location is: {0}", session.Database.FilePath));
var database = session.Database;
using (var view = database.OpenView("SELECT * FROM ComboBox WHERE Property = 'IIS_SITE'"))
{
view.Execute();
session.Log("Executed view");
var isReadOnly = database.IsReadOnly;
session.Log(string.Format("Database is read only: {0}", isReadOnly));
session.Log(string.Format("# of rows in ComboBox Table: {0}",
view.Database.CountRows("ComboBox", "Property = 'IIS_SITE'")));
using (var serverManager = new ServerManager())
{
session.Log("Accessed Server Manager");
var index = 1;
var rowIndex = 1;
session.Log(string.Format("Going through {0} sites", serverManager.Sites.Count));
foreach (var site in serverManager.Sites)
{
if (!string.IsNullOrEmpty(site.Name))
{
session.Log(string.Format("Site # {0} {1}", index, site.Name));
var record = session.Database.CreateRecord(4);
//Property
record.SetString(1, "IIS_SITE");
//Order
record.SetString(2, rowIndex.ToString());
//Value
record.SetString(3, site.Name);
//Text
record.SetString(4, site.Name);
session.Log(string.Format("Modifying the view for site # {0}", index));
view.Modify(ViewModifyMode.InsertTemporary, record);
}
session.Log("Incrementing index");
index++;
rowIndex++;
}
}
session.Log("Closing the view");
}
}
catch (Exception e)
{
session.Log(string.Format("ERROR in UpdateComboBoxes: {0}", e.Message));
session.Log(e.StackTrace);
var inner = e.InnerException;
if(inner != null)
{
session.Log(string.Format("{0}{1}", "\t", inner.Message));
session.Log(string.Format("{0}{1}", "\t", inner.StackTrace));
}
while ((inner = inner.InnerException) != null)
{
session.Log(string.Format("{0}{1}", "\t", inner.Message));
session.Log(string.Format("{0}{1}", "\t", inner.StackTrace));
}
return ActionResult.Failure;
}
return ActionResult.Success;
}
我得到的错误:
MSI(c)(B0!F4)[14:46:40:369]:注意:1:2259 2:3:4:
UpdateComboBoxes中的错误:执行期间函数失败。 在Microsoft.Deployment.WindowsInstaller.View.Modify(ViewModifyMode模式,记录记录) 在VideoQuestionInstaller.CustomActions.CustomActions.UpdateComboBoxes(会话会话) 自定义操作引发的异常: System.Reflection.TargetInvocationException:调用目标抛出了异常。 ---&GT; System.NullReferenceException:未将对象引用设置为对象的实例。 在VideoQuestionInstaller.CustomActions.CustomActions.UpdateComboBoxes(会话会话) ---内部异常堆栈跟踪结束--- 在System.RuntimeMethodHandle.InvokeMethod(对象目标,对象参数,签名sig,布尔构造函数) at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,Object parameters,Object arguments) 在System.Reflection.RuntimeMethodInfo.Invoke(Object obj,BindingFlags invokeAttr,Binder binder,Object parameters,CultureInfo culture) 在Microsoft.Deployment.WindowsInstaller.CustomActionProxy.InvokeCustomAction(Int32 sessionHandle,String entryPoint,IntPtr remotingDelegatePtr)
我查了一下,错误2259意味着数据库无法更新,这一点非常清楚,因为错误之前的最后一个日志是:修改网站#1的视图。
有没有人对我做错了什么有什么想法,以及为什么ComboBox数据库没有更新?
提前致谢!
答案 0 :(得分:0)
没关系,我想出了问题所在。这是我如何解决它:
我添加了另一个隐藏的控件,以便创建组合框表而不必将假值放入我将要使用的实际组合框中
<Property Id="HIDDEN_IIS_SITE" />
<Control Id="DummyComboBox" Hidden="yes" Type="ComboBox" Sorted="yes" ComboList="yes" Property="HIDDEN_IIS_SITE" X="45" Y="85" Width="220" Height="18" >
<ComboBox Property="HIDDEN_IIS_SITE" >
<ListItem Text="Dummy" Value="Dummy"/>
</ComboBox>
</Control>
然后我更改了自定义操作,以便它获得实际的现有行数,然后在添加记录时添加到数字中,以便使用订单的正确数字
[CustomAction]
public static ActionResult UpdateComboBoxes(Session session)
{
session.Log("Begin Custom Action UpdateComboBoxes");
try
{
var database = session.Database;
using (var view = database.OpenView("SELECT * FROM ComboBox WHERE Property = 'IIS_SITE'"))
{
view.Execute();
session.Log("Executed view");
var index = view.Database.CountRows("ComboBox", "Property = 'IIS_SITE'");
using (var serverManager = new ServerManager())
{
foreach (var site in serverManager.Sites)
{
if (!string.IsNullOrEmpty(site.Name))
{
var record = session.Database.CreateRecord(4);
//Property
record.SetString(1, "IIS_SITE");
//Order
record.SetString(2, (++index).ToString());
//Value
record.SetString(3, site.Name);
//Text
record.SetString(4, site.Name);
view.InsertTemporary(record);
session.Log("Inserted new record");
}
}
}
session.Log("Closing the view");
}
}
catch (Exception e)
{
session.Log(string.Format("ERROR in UpdateComboBoxes: {0}", e.Message));
session.Log(e.StackTrace);
var inner = e.InnerException;
if(inner != null)
{
session.Log(string.Format("{0}{1}", "\t", inner.Message));
session.Log(string.Format("{0}{1}", "\t", inner.StackTrace));
}
while (inner != null && (inner = inner.InnerException) != null)
{
session.Log(string.Format("{0}{1}", "\t", inner.Message));
session.Log(string.Format("{0}{1}", "\t", inner.StackTrace));
}
return ActionResult.Failure;
}
return ActionResult.Success;
}