选中嵌套日期分析者中的全部复选框

Question

我有一个嵌套的datalist结构，并希望在每个cathegories上放置select all复选框。

顶部的复选框工作正常，但不知道如何为每个主目录执行此操作

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这可以很好地工作：

 protected void cbTamaminiSec_CheckedChanged(object sender, EventArgs e)
{
    CheckBox cbTemp;

    foreach (DataListItem ItemP in parentDataList.Items)
    {
        cbTemp = (CheckBox)parentDataList.Items[ItemP.ItemIndex].FindControl("cbTumunuSec");
        cbTemp.Checked = cbTamaminiSec.Checked;

        DataList nestedDataList = (DataList)parentDataList.Items[ItemP.ItemIndex].FindControl("nestedDataList");

        foreach (DataListItem Item in nestedDataList.Items)
        {
            cbTemp = (CheckBox)nestedDataList.Items[Item.ItemIndex].FindControl("cbTamam");

            cbTemp.Checked = cbTamaminiSec.Checked;
        }
    }
}

但是我不知道部分选择(下面是parentdatalist中的复选框的代码)，我把选定的id设为"0“来强调这个问题

  protected void cbTumunuSec_CheckedChanged(Object sender, EventArgs e)
    {
        int selected = 0;//= (int)parentDataList.SelectedItem.ToString(); // problem is here..

        DataList nestedDataList = (DataList)parentDataList.Items[selected].FindControl("nestedDataList");

        foreach (DataListItem Item in nestedDataList.Items)
        {
            CheckBox cbTemp = (CheckBox)nestedDataList.Items[Item.ItemIndex].FindControl("cbTamam");

            cbTemp.Checked = true;

        }
    }

解决方案是什么？

Answer 1

问题解决了！asp代码：

<asp:HiddenField ID="hiddenBaslikId" runat="server" Value='<%# Eval("baslikId") %>' />

代码隐藏：

protected void cbTumunuSec_CheckedChanged(Object sender, EventArgs e)
    {
    CheckBox checkAll = (CheckBox)sender;
    DataListItem item = (DataListItem)checkAll.NamingContainer;
    HiddenField HiddenID = (HiddenField)item.FindControl("hiddenBaslikId");

    int selected = Convert.ToInt32(HiddenID.Value)-1;

        DataList nestedDataList = (DataList)parentDataList.Items[selected].FindControl("nestedDataList");

        foreach (DataListItem Item in nestedDataList.Items)
        {
            CheckBox cbTemp = (CheckBox)nestedDataList.Items[Item.ItemIndex].FindControl("cbTamam");

            cbTemp.Checked = true;

        }
    }

Answer 2

您可以尝试使用基于OfType LINQ Operator和Controls propery的代码

var allControls = nestedDataList.Items[index].Controls.OfType<CheckBox>();

....//Filter with `Where Operator`

链接：http://msdn.microsoft.com/fr-fr/library/system.web.ui.control.controls(v=vs.80).aspx