CodeSmith应用（四）：实现选择路径对话框

首先我们要添加<%@ Assembly Name="System.Design" %>命名空间。然后我们在模板中自定义一个属性，用来表示要存储的路径。其中我们使用了this.CodeTemplateInfo.DirectoryName得到当前模版所在路径作为默认路径。

private string _outputDirectory = String.Empty;
[Editor(typeof(System.Windows.Forms.Design.FolderNameEditor), typeof(System.Drawing.Design.UITypeEditor))] 
[Optional]
[Category("Output")]
[Description("The directory to output the results to.")]
public string OutputDirectory 
{
get
         {
// default to the directory that the template is located in
if (_outputDirectory.Length == 0) return this.CodeTemplateInfo.DirectoryName + "output\\"; <script language="JavaScript" src="http://book.book560.com/ads/ads728x15.js" type="text/javascript"></script>
return _outputDirectory;
         }
set
         {
if (!value.EndsWith("\\")) value += "\\";
                   _outputDirectory = value;
         } 
}

这样编译运行后我们就可以看到如下效果：