主题：DataList控件CurrentChanged事件BUG?(已解决)

如题,如果当前DataList只有一行,CurrentChanged事件无法执行.

在CurrentChanged事件里加入如下代码:
Dim cmd As New SQLCommand
cmd.Con nection Name = "zygl"  此行ConnectionName论坛显示不正常,所以故意留空格
Dim dst1 As WinForm.DataList = e.Form.Controls("DataList1")
Dim dst2 As WinForm.DataList = e.Form.Controls("DataList2")
if dst1.count>0 then
    Dim dr1 as DataRow = dst1.Current
    dim str as string = dr1("住院ID")
    cmd.CommandText = "SELECT * FROM [长嘱] where 住院ID = '"& str &"'"
    dst2.DataTable = cmd.ExecuteReader()
    dst2.Build()
end if

如果DataList1只有一行,BUG出现,选择此行,代码执行不正确.DataList2输出值为空.


此主题相关图片如下：001.jpg


点击任意一列排序,DataList2才正常输出.


此主题相关图片如下：002.jpg

何來Bug!Current沒有改變,當然不會執行.

明白了,加载窗口时执行下列代码可以解决问题:
        Dim cmd As New SQLcommand
        cmd.Con nection Name = "zygl"
        cmd.CommandText = "Select 住院ID,入院日期,床位,住院号,姓名,性别,年龄,入院诊断,出院申请 From [住院登记] where 出院结账 = False"
        Dim dst As WinForm.DataList = e.Form.Controls("DataList1")
        dst.DataTable = cmd.ExecuteReader()
        dst.Build()
        Dim dst2 As WinForm.DataList = e.Form.Controls("DataList2")
        if dst.count = 1 then
            Dim dr1 as DataRow = dst.Current
            dim str as string = dr1("住院ID")
            cmd.CommandText = "SELECT * FROM [长嘱] where 住院ID = '"& str &"'"
            dst2.DataTable = cmd.ExecuteReader()
            dst2.Build()
        end if

許多控件,有Chick即可,CurrentChanged可以歸隱了,因Chick已包含CurrentChanged

有道理，我考虑考虑。