HtmlTableCellCollection.Item[Int32] 属性

  • 参考

定义

命名空间:
System.Web.UI.HtmlControls
程序集:
System.Web.dll

获取 HtmlTableCell 集合中指定索引处的 HtmlTableCellCollection 对象。

public:
 property System::Web::UI::HtmlControls::HtmlTableCell ^ default[int] { System::Web::UI::HtmlControls::HtmlTableCell ^ get(int index); };
public System.Web.UI.HtmlControls.HtmlTableCell this[int index] { get; }
member this.Item(int) : System.Web.UI.HtmlControls.HtmlTableCell
Default Public ReadOnly Property Item(index As Integer) As HtmlTableCell

参数

index
Int32

指定要返回的 HtmlTableCell 的序号索引值。

属性值

HtmlTableCell

HtmlTableCell，它表示在 HtmlTableCellCollection 中包含的单元格。

示例

下面的代码示例演示如何使用索引器从集合中检索由 对象表示 HtmlTableCell 的表的 HtmlTableCellCollection 单元格。 然后，使用新内容更新单元格。 请注意， Cells 由 HtmlTableRow 对象表示的行的 属性是 HtmlTableCellCollection 集合。

<%@ Page Language="C#" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Load(Object sender, EventArgs e)
  {

    // Get the number of rows and columns selected by the user.
    int numrows = Convert.ToInt32(Select1.Value);
    int numcells = Convert.ToInt32(Select2.Value);

    // Iterate through the rows.
    for (int j = 0; j < numrows; j++)
    {

      // Create a new row and add it to the Rows collection.
      HtmlTableRow row = new HtmlTableRow();

      // Provide a different background color for alternating rows.
      if (j % 2 == 1)
        row.BgColor = "Gray";

      // Iterate through the cells of a row.
      for (int i = 0; i < numcells; i++)
      {
        // Create a new cell and add it to the Cells collection.
        HtmlTableCell cell = new HtmlTableCell();
        cell.Controls.Add(new LiteralControl("row " +
                          j.ToString() +
                          ", cell " +
                          i.ToString()));
        row.Cells.Add(cell);
      }
      Table1.Rows.Add(row);
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
   <title>HtmlTableCellCollection Example</title>
</head>
<body>

   <form id="form1" runat="server">

      <h3>HtmlTableCellCollection Example</h3>

      <table id="Table1" 
             style="border-width:1; border-color:Black; padding:5"
             cellspacing="0" 
             runat="server"/>
        
      <hr />

      Select the number of rows and columns to create: <br /><br />

      Table rows:
      <select id="Select1" 
              runat="server">

         <option value="1">1</option>
         <option value="2">2</option>
         <option value="3">3</option>
         <option value="4">4</option>
         <option value="5">5</option>

      </select>

        

      Table cells:
      <select id="Select2" 
              runat="server">

         <option value="1">1</option>
         <option value="2">2</option>
         <option value="3">3</option>
         <option value="4">4</option>
         <option value="5">5</option>

      </select>
       
      <br /><br />
  
      <input type="submit" 
             value="Generate Table" 
             runat="server"/>

   </form>

</body>
</html>

<%@ Page Language="VB" AutoEventWireup="True" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  
  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

    Dim i As Integer
    Dim j As Integer
    Dim row As HtmlTableRow
    Dim cell As HtmlTableCell

    ' Get the number of rows and columns selected by the user.
    Dim numrows As Integer = CInt(Select1.Value)
    Dim numcells As Integer = CInt(Select2.Value)

    ' Iterate through the rows.
    For j = 0 To numrows - 1

      ' Create a new row and add it to the Rows collection.
      row = New HtmlTableRow()

      ' Provide a different background color for alternating rows.
      If (j Mod 2) = 1 Then
        row.BgColor = "Gray"
      End If

      ' Iterate through the cells of a row.
      For i = 0 To numcells - 1
           
        ' Create a new cell and add it to the Cells collection.
        cell = New HtmlTableCell()
        cell.Controls.Add(New LiteralControl("row " & _
                          j.ToString() & _
                          ", cell " & _
                          i.ToString()))
        row.Cells.Add(cell)
            
      Next i

      Table1.Rows.Add(row)
         
    Next j
      
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
   <title>HtmlTableCellCollection Example</title>
</head>
<body>

   <form id="form1" runat="server">

      <h3>HtmlTableCellCollection Example</h3>

      <table id="Table1" 
             style="border-width:1; border-color:Black; padding:5"
             cellspacing="0" 
             runat="server"/>
        
      <hr />

      Select the number of rows and columns to create: <br /><br />

      Table rows:
      <select id="Select1" 
              runat="server">

         <option value="1">1</option>
         <option value="2">2</option>
         <option value="3">3</option>
         <option value="4">4</option>
         <option value="5">5</option>

      </select>

        

      Table cells:
      <select id="Select2" 
              runat="server">

         <option value="1">1</option>
         <option value="2">2</option>
         <option value="3">3</option>
         <option value="4">4</option>
         <option value="5">5</option>

      </select>
       
      <br /><br />
  
      <input type="submit" 
             value="Generate Table" 
             runat="server"/>

   </form>

</body>
</html>

注解

使用此索引器从HtmlTableCellCollection集合中获取HtmlTableCell对象。 可以使用简单的数组表示法访问 HtmlTableCell 指定索引处的对象。

注意

集合从零开始;因此，集合中的第一个元素包含 的索引值 0。

适用于

另请参阅