TableCellCollection.Item プロパティ
TableCellCollection の指定したインデックス位置にある TableCell を取得します。
名前空間: System.Web.UI.WebControls
アセンブリ: System.Web (system.web.dll 内)
構文
'宣言
Public ReadOnly Default Property Item ( _
index As Integer _
) As TableCell
'使用
Dim instance As TableCellCollection
Dim index As Integer
Dim value As TableCell
value = instance(index)
public TableCell this [
int index
] { get; }
public:
property TableCell^ default [int] {
TableCell^ get (int index);
}
/** @property */
public TableCell get_Item (int index)
適用できません。
パラメータ
- index
返される TableCell を指定する序数インデックス値。
プロパティ値
TableCellCollection の要素を表す TableCell。
解説
このインデクサを使用して、TableCellCollection 内の、単純な配列表記で指定したインデックス位置にある個別の TableCell を取得します。
使用例
インデクサを使用して、TableCellCollection から TableCell を取得する方法の例を次に示します。この例では、TableRow の Cells プロパティは、TableCellCollection クラスのインスタンスです。
<%@ 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>
<%@ 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>
プラットフォーム
Windows 98,Windows Server 2000 SP4,Windows CE,Windows Millennium Edition,Windows Mobile for Pocket PC,Windows Mobile for Smartphone,Windows Server 2003,Windows XP Media Center Edition,Windows XP Professional x64 Edition,Windows XP SP2,Windows XP Starter Edition
Microsoft .NET Framework 3.0 は Windows Vista,Microsoft Windows XP SP2,および Windows Server 2003 SP1 でサポートされています。
バージョン情報
.NET Framework
サポート対象 : 3.0,2.0,1.1,1.0
参照
関連項目
TableCellCollection クラス
TableCellCollection メンバ
System.Web.UI.WebControls 名前空間
TableCell
TableRow
Cells