asp.net+JS+xml联动

来源：互联网发布：产业结构优化升级编辑：程序博客网时间：2024/06/06 14:14

asp.net+JS+xml联动

JS程序 :

function load(ID)

{

var SubLenth=document.all.DlsBM.length;

while (SubLenth>=0)

{

document.all.DlsBM.options.remove(SubLenth);

SubLenth--;

}//去处原来的下拉列表中的值

var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");

var oDoc = new ActiveXObject("MSXML2.DOMDocument");

oHttpReq.open("POST", "../../Common/DoQuery.aspx?ID="+ID+"&Class=BM" , false);//执行动态查询

oHttpReq.send("");

result = oHttpReq.responseText;

oDoc.loadXML(result);

//alert(result);

//以下是对生成的XML解析并添加到下拉列表

items0 = oDoc.selectNodes("//NewDataSet/Table/BM_Name");

items1 = oDoc.selectNodes("//NewDataSet/Table/BM_ID");

//items2 = oDoc.selectNodes("//NewDataSet/Table/DQ_Degree");

var itemsLength=items0.length;

for(i=0;i<itemsLength;i++)

{

var newOption = document.createElement("option");

newOption.text = items0[i].text;

newOption.value = items1[i].text;

//newOption.value1 = items2[i].text;

document.all.DlsBM.options.add(newOption);

}

//alert(document.all.DlsBM.text);

}

后台：

DlsBMPro.Attributes.Add("onchange","load(this.options[this.selectedIndex].value)");

Doquery程序：

   if (!IsPostBack)
   {
    string strID = "";
    string strClass = "";
    if (Request.QueryString["ID"] == "" || Request.QueryString["ID"] == null || Request.QueryString["Class"] == "" || Request.QueryString["Class"] == null)
    {
     return;
    }
    strID = Request.QueryString["ID"];
    strClass = Request.QueryString["Class"];

    XmlTextWriter writer=new XmlTextWriter(Response.OutputStream,Encoding.UTF8);
    writer.Formatting = Formatting.Indented;
    writer.Indentation = 4;
    writer.IndentChar = ' ';
    switch(strClass)
    {
     case "DQ":
      DQs.GetChildDQ(strID).WriteXml(writer);//根据父地区ID查询所有子地区，并将得到的数据写入指定的XmlTextWriter
      break;
     case "BM":
      BMs.GetBM_Prop(strID).WriteXml(writer);//根据BM_Prop查询所有版面，并将得到的数据写入指定的XmlTextWriter
      break;
    }
    writer.Flush();
    //Response.End();
    writer.Close();
   }