TableCellCollection.Item[Int32] Eigenschap
Definitie
Belangrijk
Bepaalde informatie heeft betrekking op een voorlopige productversie die aanzienlijk kan worden gewijzigd voordat deze wordt uitgebracht. Microsoft biedt geen enkele expliciete of impliciete garanties met betrekking tot de informatie die hier wordt verstrekt.
Haalt een TableCell van de TableCellCollection opgegeven index op.
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.TableCellDefault Public ReadOnly Property Item(index As Integer) As TableCellParameters
Waarde van eigenschap
Een TableCell die een element in de TableCellCollection.
Voorbeelden
In het volgende voorbeeld ziet u hoe u de indexeerfunctie gebruikt om een TableCell van een TableCellCollection. In het voorbeeld is de Cells eigenschap van de TableRow klasse een exemplaar van de TableCellCollection klasse.
<%@ 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 /> <br />
<p>Select a column and row:<br />
Column: <asp:DropDownList id="List1"
runat="server"/>
Row: <asp:DropDownList id="List2"
runat="server"/>
<br /> <br />
<asp:Button id="Button1"
Text="Display Cell Value"
OnClick="Button_Click"
runat="server"/>
<br /> <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 /> <br />
<p>Select a column and row:<br />
Column: <asp:DropDownList id="List1"
runat="server"/>
Row: <asp:DropDownList id="List2"
runat="server"/>
<br /> <br />
<asp:Button id="Button1"
Text="Display Cell Value"
OnClick="Button_Click"
runat="server"/>
<br /> <br />
<asp:Label id="Label1"
runat="server"/>
</p>
</div>
</form>
</body>
</html>
Opmerkingen
Gebruik deze indexeerfunctie om een persoon TableCell in de TableCellCollection opgegeven index op te halen met behulp van eenvoudige matrix notatie.
