在代码隐藏中动态创建HTML标记

Question

如何从代码隐藏文件中将HTML标记添加到aspx文件？

当我创建新对象

时

Graph MyChart = new Graph();

我希望为此对象添加标记

<Graph id="MyChart" runat="server" Height="500px"></Graph>

解决方法是什么？

Answer 1

我不确定我们是否正在讨论.NET控件或HTML，我举两个例子。

这会将其添加到页面末尾，但我建议您使用PlaceHolder来控制添加位置：

Graph MyChart = new Graph();
MyChart.ID = "MyChart";
Page.Controls.Add(MyChart);

//genericcontrol example
HtmlGenericControl NewControl = new HtmlGenericControl("graph");

// Set the properties of the new HtmlGenericControl control.
NewControl.ID = "MyGraph";
Page.Controls.Add(NewControl);

PlaceHolder示例：

 <form id="form1" runat="server">
      <h3>PlaceHolder Example</h3>
      <asp:PlaceHolder id="PlaceHolder1" 
           runat="server"/>
   </form>

  protected void Page_Load(Object sender, EventArgs e)
  {
     Graph MyChart = new Graph();
     MyChart.ID = "MyChart";
     PlaceHolder1.Controls.Add(MyChart);

    //genericcontrol example
    HtmlGenericControl NewControl = new HtmlGenericControl("graph");

    // Set the properties of the new HtmlGenericControl control.
    NewControl.ID = "MyGraph";
    PlaceHolder1.Controls.Add(NewControl);

  }