Question

我已经创建了一个Panel，其中有一个表，反过来，我在其中动态创建了复选框。

int RoleCount = CountRoles();
string[] RoleName = RoleNames();
CheckBox[] chk = new CheckBox[RoleCount];
Table TableCheckBox = new Table();
TablePanel.Controls.Add(TableCheckBox);

TableRow tRow = new TableRow();

for (int i = 0; i < RoleCount; i++)
{
    chk[i] = new CheckBox();
    chk[i].ID = "chk" + RoleName[i];
    chk[i].Text = RoleName[i];
    chk[i].ClientIDMode = System.Web.UI.ClientIDMode.Static;
    TableCell tCell = new TableCell();
    tCell.Controls.Add(chk[i]);
    if (i != 0 && i % 3 == 0)
    {
        TableCheckBox.Rows.Add(tRow);
        tRow = new TableRow();
    }
    if (i < RoleCount)
        tRow.Cells.Add(tCell);
        TableCheckBox.Rows.Add(tRow);
    }

现在，如果我想通过代码找到这个控件，那么它就不起作用了。 cb返回null。

int RoleCount = CountRoles();
string[] RoleName = RoleNames();

string chkboxbit = " ";

try
{
    foreach (string s in RoleName)
    {
        for (int i = RoleCount-1; i >= 0; i--)
        {
            chkboxbit = "chk" + RoleName[i];
            ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("ContentPlaceHolder1");
            Panel panel = (Panel)cph.FindControl("TablePanel");
            System.Web.UI.HtmlControls.HtmlTable table = (System.Web.UI.HtmlControls.HtmlTable)panel.FindControl("TableCheckBox");
            System.Web.UI.HtmlControls.HtmlInputCheckBox cb = (System.Web.UI.HtmlControls.HtmlInputCheckBox)table.FindControl(chkboxbit);
            if (cb != null)
                cb.Checked= false;
        }
    }
}
catch
{
    Response.Redirect("Error.aspx");
}

我该怎么办？

Answer 1

完成了。由于我正在创建CheckBox类型，因此以下代码适合它，我想是因为我的代码运行正常。

ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("ContentPlaceHolder1");
Panel panel = (Panel)cph.FindControl("TablePanel");
System.Web.UI.HtmlControls.HtmlTable table = (System.Web.UI.HtmlControls.HtmlTable)panel.FindControl("TableCheckBox");
System.Web.UI.WebControls.CheckBox cb = (System.Web.UI.WebControls.CheckBox)table.FindControl(chkboxbit);
if (cb != null)
{
    if (cb.Checked == true)
    cb.Checked = false;
}

找不到动态创建的复选框ID

1 个答案: