webform在指定的div中添加动态添加label

Question

RT

Answer 1

二、动态生成Asp.Net服务器控件，并取其值
private void LoadProperty(int cateId)
｛    HtmlGenericControl span = new HtmlGenericControl();
    for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
    {     
         StringBuilder strHtml = new StringBuilder();
         if (i % 2 == 0)
         {
              strHtml.Append("<div >");              strHtml.Append("<div class=\"layout1\">");
         }
         else
         {                      
                        strHtml.Append("<div >");
          }                             TextBox txt = new TextBox();
          Label lbl = new Label();
          HiddenField hdf = new HiddenField();//
          lbl.ID = "lblProp" + i.ToString();
          lbl.Text = ds.Tables[0].Rows[i]["PropName"].ToString() + ":";
          txt.ID = "txtProp" + i.ToString();          hdf.ID = "hdfProp" + i.ToString();//          lbl.EnableViewState = true;
          txt.EnableViewState = true;
          hdf.EnableViewState = true;//          LiteralControl lc = new LiteralControl(strHtml.ToString());          lc.EnableViewState = true;          span.Controls.Add(lc);
          span.Controls.Add(lbl);
          span.Controls.Add(txt);
          span.Controls.Add(hdf);//                   
          if (i % 2 == 0)
          {
                span.Controls.Add(new LiteralControl("</div></div>"));
          }
          else
           {
                 span.Controls.Add(new LiteralControl("</div>"));
           }       
       }
 ｝动态生成的控件，当点击页面按钮时会刷新页面，所以，生成控件的方法不需要if(!IsPostBack)
{
}

Answer 2

$(function(){           
                $("#addLabel").click(function(){
                $("#divAddLabel").append("<label>添加的label<label/><br />");
            });
        });
<div id="divAddLabel"></div>
        <input id="addLabel" type="button" value="Add Label" />