TableCellCollection.Clear 方法
定义
从 TableCell 中移除所有 TableCellCollection 对象。Removes all TableCell objects from the TableCellCollection.
public:
virtual void Clear();
public void Clear ();
abstract member Clear : unit -> unit
override this.Clear : unit -> unit
Public Sub Clear ()
实现
示例
下面的示例演示如何使用 Clear 方法 TableCell 从表的中间行中移除所有对象,并将其替换为新的 TableCell 对象。The following example demonstrates how to use the Clear method to remove all TableCell objects from the center row of the table and replace them with new TableCell objects.
<%@ 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;
private 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);
}
}
private void Button_Click(Object sender, EventArgs e)
{
Table1.Rows[2].Cells.Clear();
for (int cellNum = 0; cellNum < numcells; cellNum++)
{
TableCell cel = new TableCell();
cel.Text="***";
Table1.Rows[2].Cells.Add(cel);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TableCellCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>TableCellCollection Example</h3>
<asp:Table id="Table1" runat="server" />
<asp:Button id="Button1"
Text="Replace Row 3 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(sender As Object, 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)
Next
End Sub
Sub Button_Click(sender As Object, e As EventArgs)
Table1.Rows(2).Cells.Clear()
Dim cellNum As Integer
For cellNum = 0 To numcells - 1
Dim cel As New TableCell()
cel.Text = "***"
Table1.Rows(2).Cells.Add(cel)
Next
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>TableCellCollection Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>TableCellCollection Example</h3>
<asp:Table id="Table1" runat="server" />
<p> </p>
<asp:Button id="Button1"
Text="Replace Row 3 With ***"
OnClick="Button_Click"
runat="server" />
</div>
</form>
</body>
</html>
注解
使用此方法可以 TableCell 从中移除所有对象 TableCellCollection ,并将 Count 属性设置为0。Use this method to remove all TableCell objects from the TableCellCollection and set the Count property to 0.
备注
此方法将从中移除 TableCell 对象 TableCellCollection ,但不会 TableRow 从控件中移除 Table 。This method removes the TableCell objects from the TableCellCollection, but it does not remove the TableRow from the Table control. TableRow如果要完全删除表中的行,则还要确保删除。Be sure to also remove the TableRow if you want to completely remove a row from the table.