public void MsiCreateEditRecordInTable(IntPtr hDatabase, string tableName, string action, int recordnumber, int[] fieldnumbers, ArrayList fieldvalues)
{
uint retVal = CwMsiWin32.ERROR_SUCCESS;
int numfields = fieldvalues.Count;
int msiAction = -1;
//create a view to be used later for the operation
IntPtr hView = IntPtr.Zero;
string q = "SELECT * FROM `" + tableName + "`";
retVal = CwMsiWin32.MsiDatabaseOpenViewW(hDatabase, q, out hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiDatabaseOpenViewW('" + q + "')");
//execute the view
retVal = CwMsiWin32.MsiViewExecute(hView, IntPtr.Zero);
MsiThrowOnFailure(hDatabase, retVal, "MsiViewExecute()");
IntPtr hRecord = (IntPtr)(0);
//create a record ptr with numfields
if (action == "CreateRecord")
{
hRecord = CwMsiWin32.MsiCreateRecord((uint)numfields);
msiAction = CwMsiWin32.MSIMODIFY_INSERT;
if (hRecord == IntPtr.Zero)
{
throw new Exception("MsiCreateRecord");
}
int fieldnum = 1; //note: not a zero-based index!
//loop through each field in this record and set it
foreach (object val in fieldvalues)
{
if (val.GetType() == typeof(string))
{
retVal = CwMsiWin32.MsiRecordSetStringW(hRecord, (uint)fieldnum, (string)val);
}
else if (val.GetType() == typeof(Int32))
{
retVal = CwMsiWin32.MsiRecordSetInteger(hRecord, (uint)fieldnum, (Int32)val);
}
else if (val.GetType() == typeof(Int16))
{
retVal = CwMsiWin32.MsiRecordSetInteger(hRecord, (uint)fieldnum, (Int16)val);
}
MsiThrowOnFailure(hDatabase, retVal, "MsiRecordSetStringW(" + fieldnum.ToString() + ", '" + val + "')");
fieldnum++;
}
}
else if (action == "ChangeFieldsInRecord")
{
//make sure the fieldnumbers size and fieldvalues size match
if (fieldnumbers.Length != fieldvalues.Count)
{
retVal = CwMsiWin32.MsiCloseHandle(hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hView)");
throw new Exception("fieldnumbers and fieldvalues are not equal.");
}
hRecord = MsiGetRecordHandle(hDatabase, hView, recordnumber);
int i = 0;
//loop through all field numbers we want to change in this record
//and alter those fields in the record we just retrieved
foreach (int fieldnum in fieldnumbers)
{
retVal = CwMsiWin32.MsiRecordSetStringW(hRecord, (uint)fieldnum, fieldvalues[i].ToString());
MsiThrowOnFailure(hDatabase, retVal, "MsiRecordSetStringW(hRecord," + fieldnum.ToString() + "," + fieldvalues[i] + ")");
i++;
}
msiAction = CwMsiWin32.MSIMODIFY_UPDATE;
}
else
{
retVal = CwMsiWin32.MsiCloseHandle(hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hView)");
throw new Exception("Error: Invalid action specified '" + msiAction + "'!");
}
if (hRecord == (IntPtr)(-1))
{
throw new Exception("Failed to retrieve hRecord!");
}
//perform the operation on the MSI database
retVal = CwMsiWin32.MsiViewModify(hView, msiAction, hRecord);
MsiThrowOnFailure(hDatabase, retVal, "MsiViewModify - failed to alter/create record");
//cleanup
retVal = CwMsiWin32.MsiCloseHandle(hRecord);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hRecord)");
retVal = CwMsiWin32.MsiCloseHandle(hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hView)");
retVal = CwMsiWin32.MsiDatabaseCommit(hDatabase);
MsiThrowOnFailure(hDatabase, retVal, "MsiDatabaseCommit(hDatabase)");
}
public void MsiCreateRecordFromMsiTable(IntPtr hDatabase, string tableName, object tableStruct, int numfields)
{
uint retVal = CwMsiWin32.ERROR_SUCCESS;
IntPtr hView = IntPtr.Zero;
string q = "SELECT * FROM `" + tableName + "`";
IntPtr hRecord = (IntPtr)(0);
int fieldnum = 1;
//create a view to be used later for the operation
retVal = CwMsiWin32.MsiDatabaseOpenViewW(hDatabase, q, out hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiDatabaseOpenViewW('" + q + "')");
//execute the view
retVal = CwMsiWin32.MsiViewExecute(hView, IntPtr.Zero);
MsiThrowOnFailure(hDatabase, retVal, "MsiViewExecute()");
//create the record
hRecord = CwMsiWin32.MsiCreateRecord((uint)numfields);
if (hRecord == IntPtr.Zero)
{
throw new Exception("MsiCreateRecord");
}
//get the fields for this table - note we can't use [type].GetType().GetFields()
//because this function returns the fields in an unpredictable order!
string[] fields = MsiTableGetFieldNames(tableName);
if (fields == null)
{
throw new Exception("No fields for table '" + tableName + "'.");
}
if (fields.Length != numfields)
{
throw new Exception("Field count mismatch: fields.Length=" + fields.Length.ToString() + " / numfields=" + numfields.ToString());
}
foreach (string thisfield in fields)
{
FieldInfo fi = tableStruct.GetType().GetField(thisfield);
object value = fi.GetValue(tableStruct);
if (value.GetType() == typeof(string))
{
retVal = CwMsiWin32.MsiRecordSetStringW(hRecord, (uint)fieldnum, (string)value);
}
else if (value.GetType() == typeof(int))
{
retVal = CwMsiWin32.MsiRecordSetInteger(hRecord, (uint)fieldnum, (int)value);
}
else if (value.GetType() == typeof(Int16))
{
retVal = CwMsiWin32.MsiRecordSetInteger(hRecord, (uint)fieldnum, (Int16)value);
}
MsiThrowOnFailure(hDatabase, retVal, "MsiRecordSetStringW(" + fieldnum.ToString() + ", '" + value.ToString() + "')");
fieldnum++;
}
//perform the operation on the MSI database
retVal = CwMsiWin32.MsiViewModify(hView, CwMsiWin32.MSIMODIFY_INSERT, hRecord);
MsiThrowOnFailure(hDatabase, retVal, "MsiViewModify - failed to alter/create record");
//cleanup
retVal = CwMsiWin32.MsiCloseHandle(hRecord);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hRecord)");
retVal = CwMsiWin32.MsiCloseHandle(hView);
MsiThrowOnFailure(hDatabase, retVal, "MsiCloseHandle(hView)");
retVal = CwMsiWin32.MsiDatabaseCommit(hDatabase);
MsiThrowOnFailure(hDatabase, retVal, "MsiDatabaseCommit(hDatabase)");
}
