.net3.0 WPF中的问题
<Window x:Class="PhotoDemo.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="PhotoDemo"
xmlns:pd="clr-namespace:PhotoDemo"
WindowState="Maximized"
Loaded="WindowLoaded">
Design时。。
报错语句为: xmlns:pd="clr-namespace:PhotoDemo"
Error17Assembly '' was not found. The 'clr-namespace' URI refers to an assembly that is not referenced by the project.D:\Switch's\Visual Studio 2005\Projects\WPFSamples\Demos\PhotoStoreDemo\Csharp\Window1.xaml611PhotoDemo
请问是什么意思呢?该如何解决?