如何根据我在另一个下拉列表中所做的选择填充下拉列表？

Question

我可以根据我在另一个下拉列表中选择的值填充一个下拉列表吗？例如：我有 2 个下拉列表。第一个包含 OptionA 和 OptionB。如果我选择 OptionA，则第二个下拉列表将填充值 1、值 2、值 3。如果我在第一个下拉列表中选择 OptionB，那么第二个下拉列表将填充状态 1、状态 2、状态 3。

我该怎么做？谢谢！

Answer 1

此代码在我的 ddlb_division 对象的 "SelectionChanged" 事件中。我有 2 个 DDLB，ddlb_division & ddlb_section.

int li_division_id
int li_section_id
string ls_section

SetPointer(HourGlass!)

//Clears the DDLBs
ddlb_section.Reset()

//Gets the Division ID
li_division_id = integer(Left(this.Text(index), 2))

//Cursor to gather the Sections under the selected Division
declare section cursor for
select section_id, section_name
    from tadtp_sections
    where division_id = :li_division_id;

//Open cursor
open section;

//Get first row of data
fetch section into :li_section_id, :ls_section;

//Loop while we have rows
do while(SQLCA.SQLCode = 0) 

  //Adds item to DDLB
  ddlb_section.AddItem(string(li_section_id, "00") + "     " + Trim(ls_section))

  //Gets next row
  fetch section into :li_section_id, :ls_section;

loop

//Close cursor
close section;

//Enables controls
ddlb_section.Enabled = true

如何根据我在另一个下拉列表中所做的选择填充下拉列表？

How to populate a dropdown list based on the choice i've made in another dropdown list?

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