Hi,
I am using C# in VS2008 to access an MSI and delete some rows. I am
using the latest weekly WIX build, 3.5.0626. When I try to use the
View.Delete method I receive the InstallerException "Cursor in invalid
state". I've simplified the code and replicated the error with the
sample below:
string strMsiPath = @"C:\Test.msi";
using (Database objDatabase = new Database(strMsiPath,
DatabaseOpenMode.Transact))
{
using (View vwTable = objDatabase.OpenView("SELECT *
FROM Class"))
{
vwTable.Execute();
Record rcdTable = vwTable.Fetch();
while (rcdTable != null)
{
vwTable.Delete(rcdTable);
rcdTable = vwTable.Fetch();
}
}
}
System.Windows.Forms.MessageBox.Show("Done");
I am pretty sure that I am following all of the pointers in the
documentation ("The Record must have been obtained by calling Fetch().
Fails if the row has been deleted. Works only with read-write records.
This method cannot be used with a View containing joins."). There is
also a reference to See Modify(ViewModifyMode, Record) for more remarks.
I've tried replacing vwTable.Delete(rcdTable) with
vwTable.Modify(ViewModifyMode.Delete, rcdTable) and get the same error,
though that's to be expected as View.Delete(Record) just falls through
to View.Modify(Delete,Record).
The equivalent code in VBS works fine:
Const msiOpenDatabaseModeTransact = 1
Const msiViewModifyDelete = 6
Set objWI = Wscript.CreateObject("WindowsInstaller.Installer")
Set objDB = objWI.OpenDatabase("C:\Test.msi",
msiOpenDatabaseModeTransact)
Set objView = objDB.OpenView("SELECT * FROM Class")
objView.Execute
Set objRecord = objView.Fetch
While Not objRecord Is Nothing
objView.Modify msiViewModifyDelete, objRecord
Set objRecord = objView.Fetch
Wend
objView.Close
Set objWI = Nothing
MsgBox "Done"
Any clue as to what I am doing wrong?
Many thanks,
James
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