TableCellCollection.GetCellIndex(TableCell) Methode
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.
Retourneert een waarde die de index van de opgegeven TableCell waarde aangeeft van de TableCellCollection.
public:
int GetCellIndex(System::Web::UI::WebControls::TableCell ^ cell);public int GetCellIndex(System.Web.UI.WebControls.TableCell cell);member this.GetCellIndex : System.Web.UI.WebControls.TableCell -> intPublic Function GetCellIndex (cell As TableCell) As IntegerParameters
- cell
- TableCell
De TableCell index van in de TableCellCollection.
Retouren
De index van de opgegeven TableCell in de TableCellCollection. De standaardwaarde is -1, wat aangeeft dat er geen overeenkomst is gevonden.
Voorbeelden
In het volgende voorbeeld ziet u hoe u de GetCellIndex(TableCell) methode gebruikt om de kolomindex van de geselecteerde cel weer te geven.
<%@ 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 rows.
for (int k = 0; k < numrows; k++)
{
a_row.Add(k.ToString());
}
// Create a DropDownList for the number of columns.
for (int l = 0; l < numcells; l++)
{
a_column.Add(l.ToString());
}
List1.DataSource = a_row;
List2.DataSource = a_column;
List1.DataBind();
List2.DataBind();
}
}
void Button_Click(object sender, EventArgs e)
{
int row = List1.SelectedIndex;
int column = List2.SelectedIndex;
TableCell cell = Table1.Rows[row].Cells[column];
Label1.Text = "The column index of the selected cell is " +
Table1.Rows[row].Cells.GetCellIndex(cell).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 />
<p style="text-align:center">
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"/>
</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 rows.
For rowNum = 0 To numrows - 1
a_row.Add(rowNum.ToString())
Next
' Create a DropDownList for the number of columns.
Dim cellNum As Integer
For cellNum = 0 To numcells - 1
a_column.Add(cellNum.ToString())
Next
List1.DataSource = a_row
List2.DataSource = a_column
List1.DataBind()
List2.DataBind()
End If
End Sub
Sub Button_Click(ByVal sender As Object, ByVal e As EventArgs)
Dim row As Integer = List1.SelectedIndex
Dim column As Integer = List2.SelectedIndex
Dim cell As TableCell = Table1.Rows(row).Cells(column)
Label1.Text = "The column index of the selected cell is " & _
Table1.Rows(row).Cells.GetCellIndex(cell).ToString()
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 style="text-align:center">
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"/>
</p>
</div>
</form>
</body>
</html>
Opmerkingen
Gebruik deze methode om de index van de opgegeven TableCell in de TableCellCollection. Als de opgegeven TableCell waarde niet wordt gevonden, wordt een index van -1 geretourneerd.
