如何用另一个DDL填充下拉列表 [英] How to populate a dropdown list with another ddl
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问题描述
如何使用选定的值用另一个下拉列表填充一个下拉列表,我尝试了以下代码,但它使用业务逻辑填充了ddl.
how do i populate a dropdownlist with another dropdownlist list using a selected value, i tried the following code but it populates the ddl with business logic.
protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
{
Service obj = new Service ();
List <Service > slist = new List<Service> ();
Int32 ser = Convert .ToInt32 (DropDownList2.SelectedValue);
slist = obj.allServcieBYfk(ser);
drpDwnService.DataSource = slist;
drpDwnService.DataBind();
}
推荐答案
,但它使用业务逻辑填充ddl"
"but it populates the ddl with business logic"
slist = obj.allServcieBYfk(ser);
drpDwnService.DataSource = slist;
是的,这正是您要它执行的操作.
您希望发生什么事?
Yes, that is doing exactly what it is you are asking it to do.
What is it you expect to happen?
马克说的没错,不清楚是怎么回事?欲了解更多信息,请参阅以下
级联DropDownList根据ASP.NET中其他下拉菜单的选择填充下拉菜单 [^ ]
CascadingDropDown [
Mark is right, Not clear what''s the matter? For further reading see these
Cascading DropDownList Populate dropdown based on selection of other dropdown in ASP.NET[^]
CascadingDropDown[^]
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