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HtmlTableRowCollection.Item-Eigenschaft

Ruft das HtmlTableRow-Objekt am angegebenen Index aus der HtmlTableRowCollection-Auflistung ab.

Namespace: System.Web.UI.HtmlControls
Assembly: System.Web (in system.web.dll)

Syntax

'Declaration
Public ReadOnly Default Property Item ( _
    index As Integer _
) As HtmlTableRow
'Usage
Dim instance As HtmlTableRowCollection
Dim index As Integer
Dim value As HtmlTableRow

value = instance(index)

public HtmlTableRow this [
    int index
] { get; }

public:
property HtmlTableRow^ default [int] {
    HtmlTableRow^ get (int index);
}

/** @property */
public HtmlTableRow get_Item (int index)

JScript unterstützt die Verwendung von indizierten Eigenschaften, aber nicht die Deklaration von neuen indizierten Eigenschaften.

Parameter

  • index
    Ein Ordinalindexwert, der angibt, welche HtmlTableRow zurückgegeben werden soll.

Eigenschaftenwert

Eine HtmlTableRow, die eine Zeile in der HtmlTableRowCollection darstellt.

Hinweise

Mit diesem Indexer können Sie ein einzelnes HtmlTableRow-Objekt mithilfe der einfachen Arraynotation am angegebenen Index in der HtmlTableRowCollection-Auflistung abrufen.

Hinweis

Die Auflistung ist nullbasiert. Daher hat das erste Element in der Auflistung den Indexwert 0.

Beispiel

Im folgenden Codebeispiel wird veranschaulicht, wie Sie mit dem Indexer eine durch ein HtmlTableRow-Objekt dargestellte Tabellenzeile aus der HtmlTableRowCollection-Auflistung abrufen können. Die Zellen in der Zeile werden anschließend mit neuem Inhalt aktualisiert. Beachten Sie, dass die Rows-Eigenschaft der Tabelle das HtmlTableRowCollection-Objekt ist.

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

<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>
<head>
   <title>HtmlTableRowCollection Example</title>
</head>
<body>

   <form runat="server">

      <h3>HtmlTableRowCollection Example</h3>

      <table id="Table1" 
             cellpadding="5" 
             cellspacing="0" 
             border="1" 
             bordercolor="black" 
             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>

      &nbsp;&nbsp;

      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="C#" AutoEventWireup="True" %>

 <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>
<head>
   <title>HtmlTableRowCollection Example</title>
</head>
<body>

   <form runat="server">

      <h3>HtmlTableRowCollection Example</h3>

      <table id="Table1" 
             cellpadding="5" 
             cellspacing="0" 
             border="1" 
             bordercolor="black" 
             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>

      &nbsp;&nbsp;

      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="JScript" AutoEventWireup="True" %>

<script runat="server">

  function Page_Load(sender, e : EventArgs) 
  {

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

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

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

</script>

<html>
<head>
   <title>HtmlTableRowCollection Example</title>
</head>
<body>

   <form runat="server">

      <h3>HtmlTableRowCollection Example</h3>

      <table id="Table1" 
             cellpadding="5" 
             cellspacing="0" 
             border="1" 
             bordercolor="black" 
             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>

      &nbsp;&nbsp;

      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>

Plattformen

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

HtmlTableRowCollection-Klasse
HtmlTableRowCollection-Member
System.Web.UI.HtmlControls-Namespace
HtmlTableRow-Klasse
HtmlTable.Rows-Eigenschaft
HtmlTableCell-Klasse

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