TableRowCollection.Clear 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.
Hiermee verwijdert u alle TableRow besturingselementen uit de TableRowCollection.
public:
virtual void Clear();public void Clear();abstract member Clear : unit -> unit
override this.Clear : unit -> unitPublic Sub Clear ()Implementeringen
Voorbeelden
In het volgende voorbeeld ziet u hoe u de Clear methode gebruikt om alle TableRow objecten uit de TableRowCollection tabel te verwijderen en deze te vervangen door nieuwe TableRow objecten.
<%@ 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">
int numrows = 5;
int numcells = 6;
int counter = 1;
void Page_Load(Object sender, EventArgs e)
{
// 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();
counter++;
rw.Cells.Add(cel);
}
Table1.Rows.Add(rw);
}
Table1.GridLines = GridLines.Both;
Table1.CellPadding = 4;
Table1.CellSpacing = 0;
}
void Button_Click(Object sender, EventArgs e)
{
// Clear the table.
Table1.Rows.Clear();
// Create new rows and cells.
for (int rowNum = 0; rowNum < numrows; rowNum++)
{
TableRow rw = new TableRow();
for (int cellNum = 0; cellNum < numcells; cellNum++)
{
TableCell cel = new TableCell();
cel.Text = "***";
rw.Cells.Add(cel);
}
Table1.Rows.Add(rw);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Programmatic Table</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>Programmatic Table Example</h3>
<asp:Table id="Table1" runat="server"/>
<asp:Button id="Button1"
Text="Replace All Rows With ***"
OnClick="Button_Click"
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">
Dim numrows As Integer = 5
Dim numcells As Integer = 6
Dim counter As Integer = 1
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' 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()
counter += 1
rw.Cells.Add(cel)
Next
Table1.Rows.Add(rw)
Table1.GridLines = GridLines.Both
Table1.CellPadding = 4
Table1.CellSpacing = 0
Next
End Sub
Sub Button_Click(ByVal sender As Object, ByVal e As EventArgs)
' Clear the table.
Table1.Rows.Clear()
' Create new rows and cells.
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 = "***"
rw.Cells.Add(cel)
Next
Table1.Rows.Add(rw)
Next
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Programmatic Table</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>Programmatic Table Example</h3>
<asp:Table id="Table1" runat="server"/>
<asp:Button id="Button1"
Text="Replace All Rows With ***"
OnClick="Button_Click"
runat="server"/>
</div>
</form>
</body>
</html>
Opmerkingen
Gebruik deze methode om alle TableRow objecten uit de TableRowCollection en stel de Count eigenschap in op 0.
