TableRowCollection の指定したインデックス位置にある TableRow 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 TableRow
'使用
Dim instance As TableRowCollection
Dim index As Integer
Dim value As TableRow
value = instance(index)
public TableRow this [
int index
] { get; }
public:
property TableRow^ default [int] {
TableRow^ get (int index);
}
/** @property */
public TableRow get_Item (int index)
適用できません。
パラメータ
- index
返す TableRow を指定する序数インデックス値。
プロパティ値
TableRowCollection の要素を表す TableRow。
解説
このインデクサを使用して、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 TableRow を TableRowCollection から取得します。
使用例
インデクサを使用して、TableRowCollection から TableRow を取得する方法の例を次に示します。この例では、Table の Rows プロパティは、TableRowCollection 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 cellNum As Integer
Dim counter As Integer = 1
' Create a table.
Dim rowNum As Integer
For rowNum = 0 To numRows - 1
Dim rw As New TableRow()
For cellNum = 0 To numCells - 1
Dim cel As New TableCell()
cel.Text = counter.ToString()
If cellNum = List2.SelectedIndex Then
cel.BackColor = System.Drawing.Color.Chartreuse
ElseIf rowNum = List1.SelectedIndex Then
cel.BackColor = System.Drawing.Color.CadetBlue
Else
cel.BackColor = System.Drawing.Color.White
End If
rw.Cells.Add(cel)
counter += 1
Next cellNum
Table1.Rows.Add(rw)
Next rowNum
If Not IsPostBack Then
' Fill a DropDownList with row numbers
For rowNum = 0 To numRows - 1
List1.Items.Add(rowNum.ToString())
Next rowNum
' Fill a DropDownList with column numbers
For cellNum = 0 To numCells - 1
List2.Items.Add(cellNum.ToString())
Next cellNum
End If
End Sub
Sub Button_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim rowNum As Integer = List1.SelectedIndex
Dim rw As TableRow = Table1.Rows(rowNum)
Label1.Text = "The row index of the selected cell is " & _
Table1.Rows.GetRowIndex(rw).ToString()
End Sub
</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 />
Select a cell:
<br /> <br />
Row: <asp:DropDownList id="List1" runat="server" />
Column: <asp:DropDownList id="List2" runat="server" />
<br /> <br />
<asp:Button id="Button1"
Text="Get Index"
OnClick="Button_Click"
runat="server" />
<br /> <br />
<asp:Label id="Label1" runat="server" />
</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;
// 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();
if (cellNum == List2.SelectedIndex)
cel.BackColor = System.Drawing.Color.Chartreuse;
else if (rowNum == List1.SelectedIndex)
cel.BackColor = System.Drawing.Color.CadetBlue;
else
cel.BackColor = System.Drawing.Color.White;
rw.Cells.Add(cel);
counter++;
}
Table1.Rows.Add(rw);
}
if (!IsPostBack)
{
// Fill a DropDownList with row numbers
for (int rowNum = 0; rowNum < numRows; rowNum++)
{
List1.Items.Add(rowNum.ToString());
}
// Fill a DropDownList with column numbers
for (int cellNum = 0; cellNum < numCells; cellNum++)
{
List2.Items.Add(cellNum.ToString());
}
}
}
void Button_Click(object sender, EventArgs e)
{
int rowNum = List1.SelectedIndex;
TableRow rw = Table1.Rows[rowNum];
Label1.Text = "The row index of the selected cell is " +
Table1.Rows.GetRowIndex(rw).ToString();
}
</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 />
Select a cell:
<br /> <br />
Row: <asp:DropDownList id="List1" runat="server" />
Column: <asp:DropDownList id="List2" runat="server" />
<br /> <br />
<asp:Button id="Button1"
Text="Get Index"
OnClick="Button_Click"
runat="server" />
<br /> <br />
<asp:Label id="Label1" runat="server" />
</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
TableRowCollection クラス
TableRowCollection メンバ
System.Web.UI.WebControls 名前空間
TableRow
Table
Table.Rows プロパティ