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How to Bind Listview control in vb.net code
I have a xml file I read into a dataset. I have a listview control with about 5 columns. So when someone chooses a work order, I find the record if it exists I fill the listview with items. Now the items can be deleted or more items could be added, so I though lets bind the data so any changes made to the listview will be updated in the dataset. Then I can do dataset.update and write the xml. However I can fill the listview, however this is not binding it and I am wondering if this can even be done with the listview control
thanks
thanks
Visual Basic.NET.NET Programming
Last Comment
nepaluz
ASKER
Here is the code I use, can I get a example of what of what you are saying. Will I be able to tell if the textchanged, or if it was deleted or another row added. Then update the dataset accordingly, by replace dataset items with new values and do a dataset.update. Not sure though about going through the dataset to find the lines that have changed.
thanks
thanks
ASKER
Sorry here it is
Private Function BindDataSet(ByVal myWO As String, ByRef mDS As DataSet) As Boolean
Dim i As Integer = 0
mDS.Tables(0).DefaultView.RowFilter = "WO_Number = '" & myWO & "'"
If mDS.Tables(0).DefaultView.Count = 0 Then
Else
' we have rows to bind
mDS.Tables(1).DefaultView.RowFilter = "WO_Number = '" & myWO & "'"
For i = 0 To mDS.Tables(1).DefaultView.Count - 1
Dim myObj As New ListViewItem
Dim curRow As DataRow
curRow = mDS.Tables(1).Rows(i)
myObj.Text = mDS.Tables(1).Rows(i).Item(2).ToString
' myObj.SubItems.Add(mDS.Tables(1).DefaultView.Item(3).ToString)
myObj.SubItems.Add(mDS.Tables(1).Rows(i).Item(5).ToString)
myObj.SubItems.Add(mDS.Tables(1).Rows(i).Item(4).ToString)
If mDS.Tables(1).Rows(i).Item(6) = True Then
myObj.SubItems.Add("R")
myObj.ForeColor = Color.Red
lblResiCharges.Text = FormatCurrency(CDbl(lblResiCharges.Text) + (CDbl(mDS.Tables(1).Rows(i).Item(5).ToString)) * CDbl(mDS.Tables(1).Rows(i).Item(4).ToString))
Else
myObj.SubItems.Add("C")
End If
myObj.SubItems.Add(mDS.Tables(1).Rows(i).Item(1).ToString)
lblTotalCharges.Text = FormatCurrency(CDbl(lblTotalCharges.Text) + (CDbl(mDS.Tables(1).Rows(i).Item(5).ToString)) * CDbl(mDS.Tables(1).Rows(i).Item(4).ToString))
' myObj.Text =
ListView1.Items.Add(myObj)
Next
End If
End Function
I'll get back to you in a while (hopefully before the ystem goes down for maintanance)
I hadn't read your response omprehensively before the system went dow.
For code suggestion (and if you are not avert to a bit of reading), you can implement databinding by reading here http://www.codeproject.com
For code suggestion (and if you are not avert to a bit of reading), you can implement databinding by reading here http://www.codeproject.com
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ASKER
Ok, I agree with you and the idea of the datagridview. I've gotten it to look like the listview. However when I would add a item to the datagridview, a new row, how do I get a row object from the datagridview without any rows actually in it.
dim myRow as new datagridviewrow
myrow = dgItems.?????
myrow.cells(0).value = "1"
myrow.cells(1).value = "2"
thanks
dim myRow as new datagridviewrow
myrow = dgItems.?????
myrow.cells(0).value = "1"
myrow.cells(1).value = "2"
thanks
I don't seem to understand your question. Are you loking to add a new item to the table / grid?
I was of the assumption that you are going to bind your datatable to the datagridview, thus automaically have it populated. Any changes made on the datagridview can be automatically persisted to the datatable.
I was of the assumption that you are going to bind your datatable to the datagridview, thus automaically have it populated. Any changes made on the datagridview can be automatically persisted to the datatable.
ASKER
Ok, heres what I have seems to be working great. I bind the dataset to the grid when adding and editing the items in the grid. So I am accepting your grid solution, much easier and less code using the grid. However please look below and let me know why when I have the gridrow color.red, when I add another line that needs to be red, the previous line or record is no longer red, just the last line. I have a issue finding the gridrow index of the newly added row.
thank you again very much.
thank you again very much.
Private Function FillListBox(ByVal mText As String, ByVal mTag As String, ByVal mQty As Integer, ByVal mResident As Boolean) As Boolean
Dim mPrice As String = SplitString(mTag, 1)
Dim mItemID As String = SplitString(mTag, 0)
mInspectionCost = mInspectionCost + (CDbl(mPrice))
Dim myGroup As String = TabInspection.SelectedTab.Text
Dim mCHG As String = ""
Dim myObj As New ListViewItem
Dim myRow As DataRow
myRow = dsInspectionsInv.Tables(1).NewRow
myRow.Item(0) = Trim(lblWONo.Text)
myRow.Item(1) = mItemID
myRow.Item(2) = Trim(myGroup)
lblTotalCharges.Text = FormatCurrency(CDbl(lblTotalCharges.Text) + (CDbl(mPrice) * CDbl(mQty)))
If mResident = True Then
mCHG = "R"
lblResiCharges.Text = FormatCurrency(CDbl(lblResiCharges.Text) + (CDbl(mPrice) * CDbl(mQty)))
' myRow.Cells. = Color.Red
Else
mCHG = "C"
End If
myRow.Item(3) = Trim(mText)
myRow.Item(4) = mQty
myRow.Item(5) = mPrice
myRow.Item(6) = mCHG
dsInspectionsInv.Tables(1).Rows.Add(myRow)
dsInspectionsInv.AcceptChanges()
lblTotalCharges.Text = FormatCurrency(lblTotalCharges.Text, 2)
lblResiCharges.Text = FormatCurrency(lblResiCharges.Text, 2)
If mResident = True Then
dgItems.Rows(dgItems.Rows.Count - 1).DefaultCellStyle.ForeColor = Color.Red
Else
End If
MsgBox(dsInspectionsInv.HasChanges)
End Function
After line 31 of your code above (I assume you are accepting changes to your table), can you immediately after refresh the datagridview too? It seems by the time you call the cellstyle (on line 36) the changes have not yet percolated through.
ASKER
Saved me alot of time trying to bind listview when datagridview was the way to go all along.
Did that last suggestion fix cellstyle application issue too?
The key to the updating is to write code in the handlers (textchanged??) to update the dataset.
Another method is to write your own custom listview (inherited from the generic listview) and add the necessary datasource code.