在 ASP.Net、C# 中以编程方式创建字段集、ol/ul 和 li 标签

Question

我需要编写一个 ASP.Net 表单，它将生成以下 HTML：

<fieldset>   
<legend>Contact Details</legend>   
<ol>   
<li>   
<label for="name">Name:</label>   
<input id="name" name="name" class="text" type="text" />   
</li>   
<li>   
<label for="email">Email address:</label>   
<input id="email" name="email" class="text" type="text" />   
</li>   
<li>   
<label for="phone">Telephone:</label>   
<input id="phone" name="phone" class="text" type="text" />   
</li>   
</ol>   
</fieldset>  

但是，要添加到表单中的字段将在运行时确定，因此我需要在运行时创建字段集并向其中添加有序列表和列表项，并酌情使用标签、文本框、复选框等。

我找不到可以创建这些标签的标准 ASP.Net 对象。

例如，我想在 C# 中执行以下操作：

FieldSet myFieldSet = new FieldSet();
myFieldSet.Legend = “Contact Details”;
OrderedList myOrderedList = new OrderedList();

ListItem listItem1 = new ListItem();
ListItem listItem2 = new ListItem();
ListItem listItem3 = new ListItem();

// code here which would add labels and textboxes to the ListItems

myOrderedList.Controls.Add(listItem1);
myOrderedList.Controls.Add(listItem2);
myOrderedList.Controls.Add(listItem3);

myFieldSet.Controls.Add(myOrderedList);

Form1.Controls.Add(myFieldSet);

是否有任何标准的 ASP.Net 对象可以产生这种结果，或者是否有其他方法可以达到相同的结果？

马特

Answer 1

你可以试试这个：

Panel myFieldSet = new Panel();
myFieldSet.GroupingText= “Contact Details”;
HtmlGenericControl myOrderedList = new HtmlGenericControl("ol");

HtmlGenericControl listItem1 = new HtmlGenericControl ("li");
HtmlGenericControl listItem2 = new HtmlGenericControl ("li");
HtmlGenericControl listItem3 = new HtmlGenericControl ("li");

// code here which would add labels and textboxes to the ListItems

myOrderedList.Controls.Add(listItem1);
myOrderedList.Controls.Add(listItem2);
myOrderedList.Controls.Add(listItem3);

myFieldSet.Controls.Add(myOrderedList);

Form1.Controls.Add(myFieldSet);

Answer 2

根据上面的答案，我有一个实例证明数组很有用，如此处所示。注意：我在 id="ulNoTree" 的 aspx 代码中创建了一个无序列表。

int NumFloorsCt = 10;
LinkButton[] rgBL;
HtmlGenericControl[] rgLI;

/// <summary>
/// set up an array of LinkButtons with "li" controls
/// - each LinkButton click is handled by the same event handler
/// </summary>
void SetUpLinkButtons(List<FLOOR> listFloorRecs)
{
  NumFloorsCt = 10;
  rgBL = new LinkButton[NumFloorsCt];
  rgLI = new HtmlGenericControl[NumFloorsCt];

  for (int i = 0; i < NumFloorsCt; i++)
  {
    rgBL[i] = new LinkButton();
    rgBL[i].ID = LB_ID_prefix + listFloorRecs[i].ID;
    rgBL[i].Click += new System.EventHandler(LB_fp_Click);
    rgBL[i].Text = listFloorRecs[i].DESCRIP;
    rgBL[i].ToolTip = "Click here to display floor info";

    rgLI[i] = new HtmlGenericControl("li");
    rgLI[i].Controls.Add(rgBL[i]);

    ulNoTree.Controls.Add(rgLI[i]);
  }
}

/// <summary>
/// event handler for any of the link buttons
/// </summary>
protected void LB_fp_Click(object sender, EventArgs e)
{
  LinkButton btn = (LinkButton)(sender);
  // do your action here
}