Solved

VB,DataGridView,Drag and Drop,Reordering of rows

Posted on 2009-04-13
2
1,394 Views
Last Modified: 2013-11-25
I would llike to use drag  drop to reorder the students. (see sample Jpg file attached)
The studentNo field is the same as the row index plus 1, and the fill query for the DataGridView is
sorted by StudentNo, so the code just has to change the studentNo appropriately.
The best I can come up with so far is a button which lifts the selected row by one row.
(Similarly I can add a down button to do the reverse)
Repeated clickng of this button achieves the desired result but is not very user friendly.
Also I think the code (atached) is messy.
For drag and drop, I was looking for a mouse down event and Mouse up event to tell me the "from row" and the "to row" but the CurrentCell.RowIndex.Value is always a value behind
because the selected row does not change until after the mouse up event occurs.
Any ideas would be appreciated.
Private Sub ButMoveUp_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButMoveUp.Click
        Dim JPCurrentRow As Int16 = CShort(EntriesDGV.CurrentRow.Index)
 
        If JPCurrentRow > 0 Then
            'Get Parameter in preparation for re-fill
            Dim ParmExamCode As String
            ParmExamCode = CStr(AvailExamsDGV.Item("AeDgvExamCode", AvailExamsDGV.CurrentCell.RowIndex).Value)
            ' Swap order one row
            Dim JPCurrentRowID As Int32 = CInt(EntriesDGV.Item("EntryID", JPCurrentRow).Value)
            Dim JPToRowID As Int32 = CInt(EntriesDGV.Item("EntryID", JPCurrentRow - 1).Value)
 
            Me.EntriesTableAdapter.QryUpdateStudentNo(JPCurrentRow, JPCurrentRowID)
            Me.EntriesTableAdapter.QryUpdateStudentNo(JPCurrentRow + CShort(1), JPToRowID)
            'EntriesDGV.Item("StudentNo", JPToRow).Value = JPToRow - 1
            'EntriesDGV.Item("StudentNo", JPToRow - 1).Value = JPToRow
            'Re-fill DataGrid view
            Me.EntriesTableAdapter.Fill(Me.ExamPlannerUserFileDataSet.Entries, ParmExamCode)
        Else
            MsgBox("Already on first Row")
        End If
 
    End Sub

Open in new window

DataGridView.jpg
0
Comment
Question by:Polyview
2 Comments
 
LVL 53

Accepted Solution

by:
Dhaest earned 500 total points
ID: 24135291
Custom Row and Column Drag and Drop Reordering Operations with the DataGridView
http://www.danielsoper.com/programming/DataGridViewDragDropRowsColumns.aspx
0
 
LVL 1

Expert Comment

by:surfbored
ID: 24304708
Does anyone have VB code for this same solution? The given link uses C#.

TIA.
0

Featured Post

Courses: Start Training Online With Pros, Today

Brush up on the basics or master the advanced techniques required to earn essential industry certifications, with Courses. Enroll in a course and start learning today. Training topics range from Android App Dev to the Xen Virtualization Platform.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Over the years I have built up my own little library of code snippets that I refer to when programming or writing a script.  Many of these have come from the web or adaptations from snippets I find on the Web.  Periodically I add to them when I come…
When you see single cell contains number and text, and you have to get any date out of it seems like cracking our heads.
Show developers how to use a criteria form to limit the data that appears on an Access report. It is a common requirement that users can specify the criteria for a report at runtime. The easiest way to accomplish this is using a criteria form that a…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question