说明： XmlHttp实现无刷新三联动下拉框
XmlHttp实现无刷新三联动下拉框
(XmlHttp achievement of a high drop-down box three linkage XmlHttp achievement of a high drop-down box three linkage)
文件列表：
WebApplication1
...............\AssemblyInfo.cs
...............\bin
...............\...\WebApplication1.dll
...............\...\WebApplication1.pdb
...............\Global.asax
...............\Global.asax.cs
...............\Global.asax.resx
...............\Web.config
...............\WebApplication1.csproj
...............\WebApplication1.csproj.webinfo
...............\WebApplication1.sln
...............\WebForm1.aspx
...............\WebForm1.aspx.cs
...............\WebForm1.aspx.resx
好评：
