/// <summary>
/// Gets or sets the string value of a named installer property, as maintained by the
/// Session object in the in-memory Property table, or, if it is prefixed with a percent
/// sign (%), the value of a system environment variable for the current process.
/// </summary>
/// <exception cref="InvalidHandleException">the Session handle is invalid</exception>
/// <remarks><p>
/// Win32 MSI APIs:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msigetproperty.asp">MsiGetProperty</a>,
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msisetproperty.asp">MsiSetProperty</a>
/// </p></remarks>
public string this[string property]
{
get
{
if (String.IsNullOrEmpty(property))
{
throw new ArgumentNullException("property");
}
if (!this.sessionAccessValidated &&
!Session.NonImmediatePropertyNames.Contains(property))
{
this.ValidateSessionAccess();
}
StringBuilder buf = new StringBuilder();
uint bufSize = 0;
uint ret = RemotableNativeMethods.MsiGetProperty((int)this.Handle, property, buf, ref bufSize);
if (ret == (uint)NativeMethods.Error.MORE_DATA)
{
buf.Capacity = (int)++bufSize;
ret = RemotableNativeMethods.MsiGetProperty((int)this.Handle, property, buf, ref bufSize);
}
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
return(buf.ToString());
}
set
{
if (String.IsNullOrEmpty(property))
{
throw new ArgumentNullException("property");
}
this.ValidateSessionAccess();
if (value == null)
{
value = String.Empty;
}
uint ret = RemotableNativeMethods.MsiSetProperty((int)this.Handle, property, value);
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
}
}