/// <summary>
/// Retrieves product properties (not session properties) from the product database.
/// </summary>
/// <returns>Value of the property, or an empty string if the property is not set.</returns>
/// <remarks><p>
/// Note this is not the correct method for getting ordinary session properties. For that,
/// see the indexer on the Session class.
/// </p><p>
/// Win32 MSI API:
/// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msigetproductproperty.asp">MsiGetProductProperty</a>
/// </p></remarks>
public string GetProductProperty(string property)
{
if (String.IsNullOrEmpty(property))
{
throw new ArgumentNullException("property");
}
this.ValidateSessionAccess();
StringBuilder buf = new StringBuilder();
uint bufSize = (uint)buf.Capacity;
uint ret = NativeMethods.MsiGetProductProperty((int)this.Handle, property, buf, ref bufSize);
if (ret == (uint)NativeMethods.Error.MORE_DATA)
{
buf.Capacity = (int)++bufSize;
ret = NativeMethods.MsiGetProductProperty((int)this.Handle, property, buf, ref bufSize);
}
if (ret != 0)
{
throw InstallerException.ExceptionFromReturnCode(ret);
}
return(buf.ToString());
}
