TableCellCollection.Item[Int32] 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
从 TableCell 中获取位于指定索引位置的 TableCellCollection。
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 TableCell参数
属性值
表示 TableCell 中的元素的 TableCellCollection。
示例
以下示例演示如何使用索引器从 TableCellCollection获取 TableCell 。 请注意，在示例中， Cells 的 TableRow 属性是 类的 TableCellCollection 实例。
<%@ 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>
注解
使用此索引器使用简单数组表示法在指定索引处获取个人TableCellTableCellCollection。
