我使用更新面板和脚本管理器向表格添加新行，每行有 4 个文本框。现在，如果已将它们添加到表格中，我该如何处理并使用它们！
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Table ID="Table5" runat="server" Width="100%">
<asp:TableHeaderRow>
<asp:TableHeaderCell ID="TableHeaderCell1" runat="server">1</asp:TableHeaderCell><asp:TableHeaderCell
ID="TableHeaderCell2" runat="server">2</asp:TableHeaderCell><asp:TableHeaderCell
ID="TableHeaderCell3" runat="server">3</asp:TableHeaderCell><asp:TableHeaderCell
ID="TableHeaderCell4" runat="server">4</asp:TableHeaderCell></asp:TableHeaderRow>
<asp:TableRow>
</asp:TableRow>
</asp:Table>
<center>
<asp:ImageButton ID="ImageButton1" runat="server" OnClick="ImageButton1_Click"
ImageUrl="~/Images/add.jpg" ValidationGroup="AddSavabegh" /></center>
<br />
</ContentTemplate>
</asp:UpdatePanel>
后面的代码：
private void GenerateTable(int rowsCount)
{
const int colsCount = 4;
for (int i = 0; i < rowsCount; i++)
{
TableRow row = new TableRow();
for (int j = 0; j < colsCount; j++)
{
TableCell cell = new TableCell();
TextBox tb = new TextBox();
tb.ID = "txtSabeghe_" + (i+1) + "Col_" + (j+1);
cell.Controls.Add(tb);
row.Cells.Add(cell);
}
Table5.Rows.Add(row);
}
SetPreviousData(rowsCount, colsCount);
rowsCount++;
ViewState["RowsCount"] = rowsCount;
}
我使用了这个，但它返回 null ：
protected void Button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < 3; i++)
{
for (int j = 0; i < 4; i++)
{
TextBox tb = (TextBox)UpdatePanel1.FindControl("txtSabeghe_" + (i+1) + "Col_" + (j+1));
Response.Write(tb.Text);
}
}
}