如何将两个下拉列表的值合并为一个下拉列表 [英] how to combine two drop lists value into one dropdownlist

问题描述

我在Web应用程序中执行Project.我想将两个Dropdownlist选定的Value组合起来并显示到另一个Dropdownlist中.有人可以向我发送解决方案吗…….

I doing Project in web application.I want to Combine two Dropdownlist selected Value and Display into Another Dropdownlist.Can anybody send me the Solution Please.......

推荐答案

string one = ddl1.selectedvalue.tostring();
one = one + "-" + ddl2.selectedvalue.tostring();
ddl3.items.add(one);

这是您要查找的内容还是要在ddl 3中显示项目的并集?

is this what you looking for or you want to display union of items in ddl 3?

下面提供的代码可以解决您的问题.

DropDownList3.Items.Add(DropDownList1.SelectedValue);
DropDownList3.Items.Add(DropDownList2.SelectedValue);

Code given below may b the solution of your problem.

DropDownList3.Items.Add(DropDownList1.SelectedValue);
DropDownList3.Items.Add(DropDownList2.SelectedValue);

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