[求助]有关listbox数据显示的问题

你所说的，应该是下拉框联动吧？
给你段代码看看！
private void Initializtion()
{
if(ddl_type.Items.Count==0)
{
string ErrMessage = null;
Maint_Business Maint_Biz=new Maint_Business();
if(Maint_Biz.Get_AutoTypeListALL(out ErrMessage)&&Maint_Biz.iRecordCount!=0)
{
ddl_type.Items.Add("");
for(int i=0;i<Maint_Biz.ResultDS.Tables[1].Rows.Count;i++)
{
ListItem myli = new ListItem();
DataRow dr = Maint_Biz.ResultDS.Tables[1].Rows[i];
myli.Text = dr["AUTOTYPE_TYPE"].ToString();
myli.Value = dr["AUTOTYPE_ID"].ToString();
ddl_type.Items.Add(myli);
}
}
else
{
Response.Write("<script>alert(\""+ErrMessage+"\");</script>");
}
lbl_err.Text=ErrMessage;
}

}

private void ddl_type_SelectedIndexChanged(object sender, System.EventArgs e)
{
ddl_color.Items.Clear();
ddl_style.Items.Clear();
if(ddl_type.SelectedItem.Text=="")
{
return;
}
ddl_style.Items.Add("");
ddl_color.Items.Add("");
string ErrMessage = null;
Maint_Business Maint_Biz=new Maint_Business();
Maint_Biz.AutoTypeID=Convert.ToInt32(ddl_type.SelectedItem.Value);
if(Maint_Biz.Get_AutoStyleListALL(out ErrMessage)&&Maint_Biz.iRecordCount!=0)
{
for(int i=0;i<Maint_Biz.ResultDS.Tables[1].Rows.Count;i++)
{
ListItem myli = new ListItem();
DataRow dr = Maint_Biz.ResultDS.Tables[1].Rows[i];
myli.Text = dr["AUTOSTYLE_NAME"].ToString();
myli.Value = dr["AUTOSTYLE_ID"].ToString();
ddl_style.Items.Add(myli);
}
}
if(Maint_Biz.Get_AutoColorALL(out ErrMessage))
{
if(Maint_Biz.iRecordCount!=0)
{

for(int i=0;i<Maint_Biz.ResultDS.Tables[1].Rows.Count;i++)
{
ListItem myli = new ListItem();
DataRow dr = Maint_Biz.ResultDS.Tables[1].Rows[i];
myli.Text = dr["AUTOCOLOR_COLOR"].ToString();
myli.Value = dr["AUTOCOLOR_ID"].ToString();
ddl_color.Items.Add(myli);
}
}
}
lbl_err.Text=ErrMessage;

}

不是有个方法么 ? SelectedVlaue
SelectedText
这两个一个是获取值和文本的.然后循环读取就可以了啊