重新安排DropDownValues [英] Re-Arrange the DropDownValues

问题描述

每个人

我有一个 DropDownList ，在删除"按钮上，单击下拉列表中的数字将被删除，在添加"按钮上，单击编号被添加到下拉列表中.

现在，如果下拉菜单中有1、2、3，并且删除了1，我希望将数字2和3替换为1和2.我不确定如何执行此操作.有人可以帮我吗?

Hi ,

EveryOne

I have a DropDownList ,On a Delete button click the numbers from the dropdown get deleted and and on Add Button click numbers are added to the dropdown.

Now if have 1, 2, 3 in my dropdown and if I delete 1, I want the number 2 and 3 to be replaced by 1 and 2. I am not sure how to do this. Can someone please help me?

推荐答案

首先获取下拉列表的数据源，对其进行排序，然后再次将数据源设置为下拉列表.
试试这个:

Hi,
First get the datasouce of your dropdownlist, sort it and set the datasouce again to the dropdownlist.
Try this:

DataTable dt = (DataTable)DropDownList1.DataSource;
//Sort your datatable here.
dt.DefaultView.Sort = "Parameter_Name ASC";
dt = dt.DefaultView.ToTable();
DropDownList1.DataSource = dt;
DropDownList1.DataTextField = "Description";
DropDownList1.DataValueField = "Code";
DropDownList1.DataBind();

--Amit

--Amit

pls参见此处:
http://www.eggheadcafe.com/community/csharp/2/10091141/remove-selected-items-from-dropdownlist.aspx [

pls see here:
http://www.eggheadcafe.com/community/csharp/2/10091141/remove-selected-items-from-dropdownlist.aspx[^]

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