TableCellCollection.Clear 方法
定义
重要
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从 TableCell 中移除所有 TableCellCollection 对象。
public:
virtual void Clear();public void Clear ();abstract member Clear : unit -> unit
override this.Clear : unit -> unitPublic Sub Clear ()实现
示例
以下示例演示如何使用 Clear 方法从表的中心行中删除所有 TableCell 对象，并将其替换为新 TableCell 对象。
<%@ 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
使用此方法从 中删除所有 TableCell 对象，TableCellCollectionCount并将 属性设置为 0。
注意
此方法从 中删除 TableCell 对象，但不会从 Table 控件中删除 TableRow 。TableCellCollection 如果要从表中完全删除行， TableRow 请务必同时删除 。
