TableCellCollection.Item[Int32] Свойство

Определение

Возвращает объект TableCell из коллекции TableCellCollection по указанному индексу.Gets a TableCell from the TableCellCollection at the specified index.

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

Параметры

index
Int32

Порядковое значение индекса, задающее возвращаемый объект TableCell.An ordinal index value that specifies the TableCell to return.

Значение свойства

TableCell

Объект TableCell, представляющий элемент в коллекции TableCellCollection.A TableCell that represents an element in the TableCellCollection.

Примеры

В следующем примере показано, как использовать индексатор для получения TableCell из TableCellCollection .The following example demonstrates how to use the indexer to get a TableCell from a TableCellCollection. Обратите внимание, что в примере Cells свойство объекта TableRow является экземпляром TableCellCollection класса.Note that in the example, the Cells property of the TableRow is an instance of the TableCellCollection class.

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

<!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)
    {
        int numRows = 5;
        int numcells = 6;
        int counter = 1;
        ArrayList a_row = new ArrayList();
        ArrayList a_column = new ArrayList();

        // Create a table.
        for (int rowNum = 0; rowNum < numRows; rowNum++)
        {
            TableRow rw = new TableRow();
            for (int cellNum = 0; cellNum < numcells; cellNum++)
            {
                TableCell cel = new TableCell();
                cel.Text = counter.ToString();
                rw.Cells.Add(cel);
                counter++;
            }
            Table1.Rows.Add(rw);
        }

        if (!IsPostBack)
        {
            // Create a DropDownList for the number of columns.
            for (int cellNum = 0; cellNum < numcells; cellNum++)
            {
                a_column.Add(cellNum.ToString());
            }

            // Create a DropDownList for the number of rows.
            for (int rowNum = 0; rowNum < numRows; rowNum++)
            {
                a_row.Add(rowNum.ToString());
            }

            List1.DataSource = a_column;
            List2.DataSource = a_row;
            List1.DataBind();
            List2.DataBind();
        }
    }

    void Button_Click(object sender, EventArgs e)
    {
        int column = List1.SelectedIndex;
        int row = List2.SelectedIndex;

        string spec = "The cell ({0}, {1}) contains the value {2}.";
        Label1.Text = String.Format(spec, column,
            row, Table1.Rows[row].Cells[column].Text);
    }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>TableCellCollection Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    <h3>TableCellCollection Example</h3>
    <asp:Table id="Table1" 
        runat="server"/>
    <br />&nbsp;<br />
    <p>Select a column and row:<br />
        Column: <asp:DropDownList id="List1" 
            runat="server"/>
        Row: <asp:DropDownList id="List2"
            runat="server"/>
        <br />&nbsp;<br />
        <asp:Button id="Button1"
            Text="Display Cell Value"
            OnClick="Button_Click"
            runat="server"/>
        <br />&nbsp;<br />
        <asp:Label id="Label1"
            runat="server"/>
    </p>

    </div>
    </form>
</body>
</html>
<%@ Page Language="VB" %>

<!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 numRows As Integer = 5
        Dim numCells As Integer = 6
        Dim counter As Integer = 1
        Dim a_row As New ArrayList()
        Dim a_column As New ArrayList()

        ' Create a table.
        Dim rowNum As Integer
        For rowNum = 0 To numRows - 1
            Dim rw As New TableRow()
            Dim cellNum As Integer
            For cellNum = 0 To numCells - 1
                Dim cel As New TableCell()
                cel.Text = counter.ToString()
                rw.Cells.Add(cel)
                counter += 1
            Next
            Table1.Rows.Add(rw)
        Next

        If Not IsPostBack Then
            ' Create a DropDownList for the number of columns.
            Dim cellNum As Integer
            For cellNum = 0 To numCells - 1
                a_column.Add(cellNum.ToString())
            Next

            ' Create a DropDownList for the number of rows.
            For rowNum = 0 To numRows - 1
                a_row.Add(rowNum.ToString())
            Next

            List1.DataSource = a_column
            List2.DataSource = a_row
            List1.DataBind()
            List2.DataBind()
        End If
    End Sub

    Sub Button_Click(ByVal sender As Object, ByVal e As EventArgs)
        Dim column As Integer = List1.SelectedIndex
        Dim row As Integer = List2.SelectedIndex
        
        Dim spec As String
        spec = "The cell ({0}, {1}) contains the value {2}."
        Label1.Text = String.Format(spec, column, _
            row, Table1.Rows(row).Cells(column).Text)
    End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    <h3>TableCellCollection Example</h3>
    <asp:Table id="Table1" 
        runat="server"/>
    <br />&nbsp;<br />
    <p>Select a column and row:<br />
        Column: <asp:DropDownList id="List1" 
            runat="server"/>
        Row: <asp:DropDownList id="List2"
            runat="server"/>
        <br />&nbsp;<br />
        <asp:Button id="Button1"
            Text="Display Cell Value"
            OnClick="Button_Click"
            runat="server"/>
        <br />&nbsp;<br />
        <asp:Label id="Label1"
            runat="server"/>
    </p>

    </div>
    </form>
</body>
</html>

Комментарии

Используйте этот индексатор для получения отдельного объекта TableCell в по TableCellCollection указанному индексу с помощью простой нотации массива.Use this indexer to get an individual TableCell in the TableCellCollection at the specified index using simple array notation.

Применяется к

См. также раздел