Question

我知道这个问题有点不稳定，可能会产生误导，但我在行上有一个带有下拉列表的gridview。我为SelectedIndexChanged创建了一个AddHandler和一个Delegate，它到达了sub。这是代码：

AddHandler ddlmgr.SelectedIndexChanged, AddressOf ddlmgr_SelectedIndexChanged
Public Delegate Sub DropDownList_SelectedIndexChanged(ByVal sender As Object, ByVal e As DropDownList_SelectedIndexChanged)

Protected Sub ddlmgr_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)


End Sub

如果没有调用GridView_RowCommand，我如何获得行的ID？

Answer 1

你需要做一些小工作，因为我无法提供100％的细节，而无需自己编写代码并在我自己测试，我目前无法做到，但代码应该遵循以下几行

在ddlmgr_SelectedIndexChaged中，

将您的发件人投放到DropDownList
访问下拉列表的part属性。
检查它是一个GridItem（或者是repeateritem或者哪个，你明白了）
如果是，请获取项目itemindex。如果没有访问其父属性。
继续，直到找到Row对象。

Answer 2

希望这会有所帮助。如果没有，也许有更多自由访问权限的人可以加入

DropDownList ddl = (DropDownList)sender;
Control p = ddl.Parent;

//you are going to loop because the immediate 
//parent may not be the repeater item but instead a 
//container control of some kind (say a template)
while (p.GetType() != typeof(RepeaterItem))
{
     p = p.Parent;
     if (p == null) return; //we have reached the top of the control tree
}
RepeaterItem ri = (RepeaterItem)p;
int index = ri.ItemIndex
return index;

Answer 3

DropDownList ddltxt =（DropDownList）sender; string temp2 = ddltxt.SelectedItem.Text; string temp3 = ddltxt.SelectedItem.Value; string temp = ddltxt.ID.ToString（）; int strlength = temp.Length; string strLastchar = temp.Substring（strlength - 1,1）; int intlastchar = int.Parse（strLastchar.ToString（））; string commonpart = temp.Substring（0，strlength - 1）;

    if (intlastchar == 1)
    {
        string targetdropdownid = commonpart + "2";
        DropDownList targetlist = (DropDownList)TableRow11.FindControl(targetdropdownid);
        using (conn = new SqlConnection(ConnectionString))

Answer 4

很棒的工作对我来说绝对没问题

DropDownList ddl = (DropDownList)sender;
Control p = ddl.Parent;
//you are going to loop because the immediate
//parent may not be the repeater item but instead a 
//container control of some kind (say a template)
while (p.GetType() != typeof(RepeaterItem))
{     
  p = p.Parent;     
  if (p == null) 
      return; //we have reached the top of the control tree
}
RepeaterItem ri = (RepeaterItem)p;
int index = ri.ItemIndexreturn index;

获取动态下拉列表选择的选定行索引

4 个答案: