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Coolboy

March 2008 - Posts

  • ajax return xml and javascript read it

    【swans】:
    function get_area_Result_CallBack(response)
                {
                    if (response.value != null)
                    {                   
                        document.all("DropDownList3").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 name=ds.Tables[0].RowsIdea.area;
                          var id=ds.Tables[0].RowsIdea.areaID;
                          document.all("DropDownList3").options.add(new Option(name,id));
                        }               
                        }
                    }
                    return
                }

    【Michelle_Z】:
    谢谢cansum396(沉觉不醒):返回的DataTable应该就是XML格式的数据了吧,可是怎么再操作这个XML数据呢?怎么样才能看到返回的DataTable的具体数据和格式呢?
    谢谢swans(swan.net) :你的例子中“area”,“areaID”是不是列名呀?
    可我是希望在不知道列名的情况下(如返回的DataTable可能是不同的数据集),使用列的下标来访问列。


    【xiaokeai12925】:
    C#:  DataSet ds = new DataSet("表名");
      da.Fill(ds);
      XmlTextWriter writer = new XmlTextWriter(Response.OutputStream, Response.ContentEncoding);
    writer.Formatting=Formatting.Indented;
    writer.Indentation=4;
    writer.IndentChar=' ';
    ds.WriteXml(writer);

    js:
    var oHttpReq = new ActiveXObject("MSXML2.XMLHTTP");
    var oDoc = new ActiveXObject("MSXML2.DOMDocument");
    oHttpReq.open("POST", "eatabout_recive.aspx?state="+str[0], false);
    oHttpReq.send("");
    result = oHttpReq.responseText;
    oDoc.loadXML(result);
    items = oDoc.selectNodes("//表名/Table");
    var cc=items[0].selectSingleNode("字段").text
       

  • Disable Button when onclicked

    此处提供的代码用来实现当asp.net页面中的某个Button被点击后disable掉该页面中所有的Button,从而防止提交延时导致的多次提交。基于之前的onceclickbutton脚本.

    <script language="javascript">
            
    <!--
            
            
    function disableOtherSubmit()
            {            
    var obj = event.srcElement;
                
    var objs = document.getElementsByTagName('INPUT');
                
    for(var i=0; i<objs.length; i++)
                {
                    
    if(objsIdea.type.toLowerCase() == 'submit')
                    {
                        objsIdea.disabled 
    = true;
                    }
                }        }
                
            
    //-->
            </script>
    public class PreventMultiClick : System.Web.UI.Page
        {
            
    protected System.Web.UI.WebControls.Button Button1;
            
    protected System.Web.UI.WebControls.Button Button2;
            
    protected System.Web.UI.WebControls.LinkButton LinkButton1;
            
    protected System.Web.UI.WebControls.Button Button3;
        
            
    private void Page_Load(object sender, System.EventArgs e)
            {
                
    this.GetPostBackEventReference(this.Button3);        //保证 __doPostBack(eventTarget, eventArgument) 正确注册
                if(!IsPostBack)
                {
                    System.Text.StringBuilder sb 
    = new System.Text.StringBuilder();
                    sb.Append(
    "if (typeof(Page_ClientValidate) == 'function') { if (Page_ClientValidate() == false) { return false; }}");    //保证验证函数的执行
                    sb.Append("if(window.confirm('are you sure?')==false) return false;");        //自定义客户端脚本
                    sb.Append("disableOtherSubmit();");        // disable所有submit按钮
                    sb.Append(this.GetPostBackEventReference(this.Button3));    //用__doPostBack来提交,保证按钮的服务器端click事件执行
                    sb.Append(";");
                    Button3.Attributes.Add(
    "onclick",sb.ToString());
                }
            }

            
    #region Web Form Designer generated code
            
    override protected void OnInit(EventArgs e)
            {
                
    //
                
    // CODEGEN: This call is required by the ASP.NET Web Form Designer.
                
    //
                InitializeComponent();
                
    base.OnInit(e);
            }
            
            
    /// <summary>
            
    /// Required method for Designer support - do not modify
            
    /// the contents of this method with the code editor.
            
    /// </summary>
            private void InitializeComponent()
            {    
                
    this.Button3.Click += new System.EventHandler(this.Button3_Click);
                
    this.Load += new System.EventHandler(this.Page_Load);

            }
            
    #endregion

            
    private void Button3_Click(object sender, System.EventArgs e)
            {
                System.Threading.Thread.Sleep(
    3000);
                Response.Write(
    "Hello world!");
            }
        }

    此处只是disable掉所有的submit button, 我觉得其它的可提交控件也是可以通过类似的方法来disable的.
  • ASCII为9的是TAB,不是空格~~~~~

    ASCII为9的是TAB,不是空格~~~~~

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