TableRowCollection.GetRowIndex(TableRow) Метод

Определение

Возвращает значение, представляющее собой индекс указанного объекта TableRow из коллекции TableRowCollection.Returns a value that represents the index of the specified TableRow from the TableRowCollection.

public:
 int GetRowIndex(System::Web::UI::WebControls::TableRow ^ row);
public int GetRowIndex (System.Web.UI.WebControls.TableRow row);
member this.GetRowIndex : System.Web.UI.WebControls.TableRow -> int
Public Function GetRowIndex (row As TableRow) As Integer

Параметры

row
TableRow

Искомый объект TableRow в коллекции TableRowCollection.The TableRow object to search for in the TableRowCollection.

Возвращаемое значение

Int32

Позиция порядкового индекса для указанного объекта TableRow в коллекции.The ordinal index position of the specified TableRow within the collection. Значение по умолчанию — -1, свидетельствующее о том, что указанный объект TableRow не найден.The default is -1, which indicates that the specified TableRow has not been found.

Примеры

В следующем примере показано, как использовать GetRowIndex свойство для отображения индекса строки выбранной ячейки.The following example demonstrates how to use the GetRowIndex property to display the row index of the selected cell.

<%@ 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 />&nbsp;<br />
        Select a cell:
        <br />&nbsp;<br />
        Row: <asp:DropDownList id="List1" runat="server" />
        Column: <asp:DropDownList id="List2" runat="server" />
        <br />&nbsp;<br />
        <asp:Button id="Button1"
           Text="Get Index"
           OnClick="Button_Click"
           runat="server" />
        <br />&nbsp;<br />
        <asp:Label id="Label1" runat="server" />
    </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 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 />&nbsp;<br />
        Select a cell:
        <br />&nbsp;<br />
        Row: <asp:DropDownList id="List1" runat="server" />
        Column: <asp:DropDownList id="List2" runat="server" />
        <br />&nbsp;<br />
        <asp:Button id="Button1"
           Text="Get Index"
           OnClick="Button_Click"
           runat="server" />
        <br />&nbsp;<br />
        <asp:Label id="Label1" runat="server" />
    </div>
    </form>
</body>
</html>

Комментарии

Этот метод используется для определения индекса, указанного TableRow в TableRowCollection .Use this method to determine the index of the specified TableRow in the TableRowCollection. Если указанный объект TableRow не найден, возвращается индекс-1.If the specified TableRow is not found, an index of -1 is returned.

Применяется к

См. также раздел