从一位老兄的Blog上看到了这个,可是代码却不太全(至少我这里看不全)。于是想办法补充了一点:
1、客户端脚本:
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function CallServer()
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{
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var product = "测试";
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<%= ClientScript.GetCallbackEventReference(this, "product", "ReceiveServerData",null)%>;
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}
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function ReceiveServerData(rValue)
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{
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alert(rValue);
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window.location.reload();
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var tt=document.getElementById("TextBox1");
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alert(tt.DataSource);
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}
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function selectChange(e)
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{
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for(var i=0;i<e.options.length;i++)
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{
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if(e.options[i].selected==true)
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{
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selectSon(e.options[i].value); break;
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}
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}
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}
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function selectSon(e)
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{
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<%= ClientScript.GetCallbackEventReference(this, "e", "ReceiveServerData",null)%>;
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}
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function ReceiveServerData(rValue)
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{
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var son=form1.elements["SelSon"];
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var s=rValue.split("|");
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son.length=s.length;
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for(var i=0;i<s.length-1;i++)
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{
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son.options[i+1]=new Option(s[i],s[i]);
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}
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}
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/////////////////////
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function selectChangeSon(e)
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{
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for(var i=0;i<e.options.length;i++)
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{
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if(e.options[i].selected==true)
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{
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select(e.options[i].value); break;
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}
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}
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}
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function select(e)
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{
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<%= ClientScript.GetCallbackEventReference(this, "e", "hello",null)%>;
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}
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function hello(rValue)
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{
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var child=form1.elements["Sel"];
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var s=rValue.split("|");
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child.length=s.length;
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for(var i=0;i<s.length-1;i++)
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{
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child.options[i+1]=new Option(s[i],s[i]);
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}
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}
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</script>
2、aspx页面代码![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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1 <select id="SelParent" runat="server" onchange="selectChange(this)">
2 <option selected="selected" value="0">请选择 </option>
3 </select>
4 <br />
5 <select id="SelSon" runat="server" onchange="selectChangeSon(this)">
6 <option selected="selected" value="0">请选择 </option>
7 </select>
8 <br />
9 <select id="Sel">
10 <option selected="selected" value="0">请选择</option>
11 </select>
3、服务器端代码2 <option selected="selected" value="0">请选择 </option>
3 </select>
4 <br />
5 <select id="SelSon" runat="server" onchange="selectChangeSon(this)">
6 <option selected="selected" value="0">请选择 </option>
7 </select>
8 <br />
9 <select id="Sel">
10 <option selected="selected" value="0">请选择</option>
11 </select>
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OracleConnection conn = new OracleConnection("Data Source=?;UID=?;PWD=?");
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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protected void Page_Load(object sender, EventArgs e)
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{
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ParentBind();
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}
11![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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private string resualt;
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private void ParentBind()
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{
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string str = "select distinct(CID) from multimenu order by cid";
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DataSet ds = ExecuteSql4Ds(str);
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SelParent.DataSource = ds;
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SelParent.DataTextField = "cid";
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SelParent.DataBind();
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}
31![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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private string SonBind(string e)//绑定第二级
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{
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string str = "select distinct(CCID) from multimenu where CID=" + e;
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DataSet ds = ExecuteSql4Ds(str);
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string s = "";
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for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
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s += ds.Tables[0].Rows[i][0] + "|";
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return s;
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}
49![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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private string ChildBind(string e)//绑定第三级
53![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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{
55![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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string str = "select distinct(CCCID) from multimenu where CCID=" + e;
57![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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DataSet ds = ExecuteSql4Ds(str);
59![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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string s = "";
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for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
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s += ds.Tables[0].Rows[i][0] + "|";
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return s;
67![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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}
69![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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private DataSet ExecuteSql4Ds(string str)
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{
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OracleCommand cmd = new OracleCommand(str, conn);
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OracleDataAdapter da = new OracleDataAdapter(cmd);
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DataSet ds = new DataSet();
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da.Fill(ds);
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return ds;
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}
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void ICallbackEventHandler.RaiseCallbackEvent(String eventArgument)
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{
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if (eventArgument.Length == 1)//绑定第二级,我的数据库里分别是用1,11,111来代表三级,所以长度为一的就是一级,大家可以根据自己的需要把修改
95![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
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{
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string eventArgument1 = SonBind(eventArgument);
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resualt = eventArgument1;
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}
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else
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{
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string eventArgument2 = ChildBind(eventArgument);
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resualt = eventArgument2;
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}
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}
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string ICallbackEventHandler.GetCallbackResult()
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{
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return resualt;
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}
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100
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101
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102
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103
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104
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107
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108
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113
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4、数据库脚本
1 create table MULTIMENU
2 (
3 ID NUMBER(2) not null,
4 CID NUMBER(2) not null,
5 DSCT VARCHAR2(30) not null,
6 CCID NUMBER(2),
7 CCCID NUMBER(3)
8 )
9
10
2 (
3 ID NUMBER(2) not null,
4 CID NUMBER(2) not null,
5 DSCT VARCHAR2(30) not null,
6 CCID NUMBER(2),
7 CCCID NUMBER(3)
8 )
9
10