本文参考http://singlepine.cnblogs.com/articles/257954.html，学习一把Ajax
表示感谢
1.Html
<HTML> <HEAD> <meta name="vs_snapToGrid" content="False"> <title>Test</title> <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> <meta name="CODE_LANGUAGE" Content="C#"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> <script language="javascript"> function TBRResult()
{
var TBR = document.getElementById("TBDW"); AjaxClass.GetTBRData(TBR.value,get_TBR_Result_CallBack);
} function get_TBR_Result_CallBack(response) { if(response != null)
{ document.all("TBR").length=0; var ds = response.value; if((ds != null)&&typeof(ds)=="object"&&ds.Tables!=null) { for (var i = 0;i < ds.Tables[0].Rows.length; i++) { var ID = ds.Tables[0].Rows[i].USER_ID; var NAME = ds.Tables[0].Rows[i].USER_NAME; document.all("TBR").options.add(new Option(NAME,ID));
} } } return } </script> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" method="post" runat="server"> <FONT face="宋体"> <asp:dropdownlist id="TBDW" style="Z-INDEX: 101; LEFT: 200px; POSITION: absolute; TOP: 120px" runat="server" Width="120px"></asp:dropdownlist> <asp:dropdownlist id="TBR" style="Z-INDEX: 102; LEFT: 352px; POSITION: absolute; TOP: 120px" runat="server" Width="120px"></asp:dropdownlist></FONT> </form> </body></HTML>
2.后台cs
Ajax.Utility.RegisterTypeForAjax(typeof(AjaxClass)); if(!this.IsPostBack) { //绑定填报单位下拉列表框 DataSet ds = new AjaxClass().GetTBDWData(); shareFunction.BindDropDownList("","ORG_NAME","ORG_ID",TBDW,ds); TBDW.Attributes.Add("onclick","TBRResult();"); }
3.AjaxClass
public AjaxClass() { // // TODO: 在此处添加构造函数逻辑 // }
获取填报单位数据 获取填报人数据
4.GetData取数据
public GetData() { // // TODO: 在此处添加构造函数逻辑 // } public DataSet GetTBDWData() { //绑定填报单位下拉列表框 string SQL = "select * from ORGANIZATION order by ORG_ID"; DataSet ds = shareDataOperation.ExecuteSelectSql(SQL,"ORGANIZATION"); return ds; } public DataSet GetTBRData(string DWID) { //绑定填报人下拉列表框 string SQL = "select * from USERS where ORG_ID="+ DWID; DataSet ds = shareDataOperation.ExecuteSelectSql(SQL,"USERS"); return ds; }
5.web.config
<httpHandlers> <add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" /> </httpHandlers>
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