HtmlTableCellCollection.Item[Int32] HtmlTableCellCollection.Item[Int32] HtmlTableCellCollection.Item[Int32] HtmlTableCellCollection.Item[Int32] Property

Definizione

Ottiene l'oggetto HtmlTableCell in corrispondenza dell'indice specificato dall'insieme HtmlTableCellCollection.Gets the HtmlTableCell object at the specified index from the HtmlTableCellCollection collection.

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

Parametri

index
Int32 Int32 Int32 Int32

Valore di indice ordinale che specifica l'oggetto HtmlTableCell da restituire.An ordinal index value that specifies the HtmlTableCell to return.

Valore della proprietà

Oggetto HtmlTableCell che rappresenta una cella contenuta nell'insieme HtmlTableCellCollection.An HtmlTableCell that represents a cell contained in the HtmlTableCellCollection.

Esempi

Esempio di codice seguente viene illustrato come usare l'indicizzatore per recuperare una cella di una tabella, rappresentata da un HtmlTableCell oggetto, dal HtmlTableCellCollection raccolta.The following code example demonstrates how to use the indexer to retrieve a cell of a table, represented by an HtmlTableCell object, from the HtmlTableCellCollection collection. La cella viene quindi aggiornata con nuovo contenuto.The cell is then updated with new content. Si noti che il Cells proprietà di una riga rappresentata da un' HtmlTableRow oggetto è il HtmlTableCellCollection raccolta.Notice that the Cells property of a row represented by an HtmlTableRow object is the HtmlTableCellCollection collection.

<%@ 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>

      &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="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>

      &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>

Commenti

Usare l'indicizzatore per ottenere un HtmlTableCell dall'oggetto di HtmlTableCellCollection raccolta.Use this indexer to get an HtmlTableCell object from the HtmlTableCellCollection collection. È possibile accedere a un HtmlTableCell oggetto in corrispondenza dell'indice specificato usando la notazione di matrice semplice.You can access an HtmlTableCell object at a specified index by using simple array notation.

Nota

La raccolta è in base zero. di conseguenza, il primo elemento nella raccolta contiene un valore di indice 0.The collection is zero-based; therefore, the first element in the collection contains an index value of 0.

Si applica a

Vedi anche