Problem: Access has a combo box that allows you to quickly select the required data from multiple rows of records. But what if the record exceeds? It is very inconvenient to select. What should I do? A: In fact, a lot of data can be classified (stratified), and we can pre-filter data. In the following example
Problem: There is a combination box in Access to quickly select the required data from multiple rows of records. But what if the record exceeds? It is very inconvenient to select. What should I do? A: In fact, a lot of data can be classified (stratified), and we can pre-filter data. In the following example
Problem:
Access has
CombinationBox to quickly select the required
Data. But what if the record exceeds? It is very inconvenient to select. What should I do?
Answer:
Actually many
DataCan be selected by category (stratified), and we can pre-filter
Data.
In the following example, the same form class is repeatedly opened for multiple layers.
Data.
Of course, pre-screening is also included.
DataFunction.
Now start:
1. Create a form (testForm) with a text box (text0) and a button (Command2 ).
2. Create a form (selectForm) with a list box (list0 ).
3. In the "updated" event of the text box in testForm, write the following code to open the selectForm (selectForm), and the row source (RowSource) of the list box (list0) assign values.
Private Sub Text0_AfterUpdate ()
DoCmd. OpenForm "selectform"
'This line of code implements fuzzy search for the BTYPE table, using the LIKE keyword in the WHERE clause for wildcard
Forms ("selectform "). list0.RowSource = "SELECT btype. soncount, btype. userCode, btype. fullName, btype. typeId FROM btype WHERE btype. fullname like '* "& Text0.Value &"*'"
End Sub
4. In the "click" event of the command button in testForm, write the following code to open the product name selection form and search by category.
5. Then, enter the following code in testForm to open the form itself multiple times and display the subclass.
Data.
To make code reuse, two general processes are written.
Option Compare Database
Dim f
Private Sub Form_KeyDown (KeyCode As Integer, Shift As Integer)
'Set the "Key preview" attribute of the form to "yes" first"
'The process will speed up your input.
'If you press the ESCAPE key, close the form.
If KeyCode = vbKeyEscape Then
CloseAllSelectForm "SelectForm"
End If
End Sub
Private Sub List0_DblClick (Cancel As Integer)
CheckYouSelect
End Sub
Private Sub List0_KeyPress (KeyAscii As Integer)
'The entire keyboard operation is implemented in this process.
If KeyAscii = 13 Then
CheckYouSelect
End If
End Sub
Sub closeAllSelectForm (strFormName As String)
'General process 1
'This process is used to close all the forms with the specified name
For Each objForm In Forms
If objForm. Name = strFormName Then
DoCmd. Close acForm, objForm. Name
End If
Next objForm
End Sub
Sub checkYouSelect ()
'General process 2
'Check your selection
'If the suncount column is 0 (it indicates there is no next layer)
'You can put the selected product name in the text box.
On Error Resume Next
Set f = New Form_SelectForm
Dim objForm As Form
If List0.Column (0) = 0 Then
Forms ("testform"). Text0.Value = List0.Column (2)
CloseAllSelectForm "SelectForm"
Else
F. Visible = True
F. List0.RowSource = "SELECT btype. soncount, btype. UserCode, btype. FullName, btype. typeId FROM btype WHERE parid = '" & List0.Value &"'"
End If
End Sub
