AutoPostBack不起作用了

[xiahouwen]

两个DDL关联 放在一个ASCX文件中
再一个aspx内LOADCOTROL调用ASCX
发现第一个DDl的OnSelectedIndexChanged定义的事件（绑定第二个DDL）不能调用！～～～

[jackiedlh]

有没有源码？

[活靶子哥哥]

public void Page_Load(Object sender,EventArgs e)
{
if(!IsPostBack)
{
BigClassDropDownListInit();
SmallClassDropDownListInit();
}
}
public void BigClassDropDownListInit()
{
Conn.Open();
OleDbCommand commBigClass=new OleDbCommand("select BigClassName,ID from RootClass order by ID",Conn);
OleDbDataReader MyReaderBigClass1=commBigClass.ExecuteReader();
BigClassList.DataSource=MyReaderBigClass1;
BigClassList.DataTextField="BigClassName";
BigClassList.DataValueField="ID";
BigClassList.DataBind();
BigClassList.SelectedIndex = 0;
MyReaderBigClass1.Close();
Conn.Close();
}
public void BigClassList_SelectedIndexChanged(Object sender,EventArgs e)
{
SmallClassDropDownListInit();
}
public void SmallClassDropDownListInit()
{
Conn.Open();
string strCom="select TypeName,ID from Type ";
strCom+=" Where BigClassName ='"+BigClassList.SelectedItem.Text+"' ";
strCom+=" order by ID";
OleDbCommand commSmallClass=new OleDbCommand(strCom,Conn);
OleDbDataReader MyReaderSmallClass1=commSmallClass.ExecuteReader();
SmallClassList.DataSource=MyReaderSmallClass1;
SmallClassList.DataTextField="TypeName";
SmallClassList.DataValueField="ID";
SmallClassList.DataBind();
SmallClassList.SelectedIndex = 0;
MyReaderSmallClass1.Close();
Conn.Close();
}

[SeeSunSet]

protected withevetns yourAscxControl as yourAscx

[活靶子哥哥]

该怎么办？？

[活靶子哥哥]

请大家帮忙啊！！～～～～

[活靶子哥哥]

To: drk928(一起看斜阳)
是把ascx的后置代码中的事件改成protected吗?
还是不行啊。

[happyno7]

你将BigClassList的 AutoPostBack 设为true了吗？
或者，BigClassList_SelectedIndexChanged这个事件的句柄是否丢失了。

[活靶子哥哥]

To happyno7(啤酒罐): AutoPostBack设置true了
<td colspan="2" valign="bottom"><asp:dropdownlist ID="BigClassList" Width="100" Height="18" AutoPostBack="True" runat="server" OnSelectedIndexChanged="BigClassList_SelectedIndexChanged"></asp:dropdownlist>    <asp:dropdownlist ID="SmallClassList" Width="100" runat="server"></asp:dropdownlist>  <font color="#FF0000">**</font></td>
<td width="1" bgcolor="#000000"></td>