I am trying to create a user box that:
- When the button on the toolbar is clicked, a user form appears with a combo box filled in with a feature's location (Taken from the attribute table – such as I-10 and I-15)
- Once the user selects a location from the combo box, additional text boxes on the form are populated with additional attribute information of that selected feature (i.e., description, costs, etc).
- The user can change the additional attribute information and then click update to save the changes.
I have this running in ArcGIS 9.3 using VBA ArcObjects and am now trying to convert it to VB.Net using Visual Basic 2008 Express.
I am having issues with my AddItem Sub Routine- it says that my List Count, List, and AddItem are not members of the System.Windows.Form.ComboBox. Suggestions on what to change?
Errors:
Public Sub AddItem(ByVal sItem As String, ByVal cmbBox As System.Windows.Forms.ComboBox)
' adds item retaining alphabetic order, unique values
Dim l As Long
For l = 0 To cmbBox.ListCount - 1
Select Case StrComp(cmbBox.List(l), sItem, vbTextCompare)
Case 0 : Exit Sub ' already in the combobox
Case 1
cmbBox.AddItem(sItem, l)
Exit Sub
End Select
Next l
cmbBox.AddItem(sItem)
End Sub
Entire Code:
Public Class TransportationImprovementLinesAttributesForm
Public pMxDoc As IMxDocument
Private Sub cmdCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdCancel.Click
Dim pMxDoc As IMxDocument
pMxDoc = My.ArcMap.Document
Dim pMap As IMap
pMap = pMxDoc.FocusMap
'Close Form when button is pushed
Me.Close()
'Clear Selection and Refresh View
pMap.ClearSelection()
pMxDoc.ActiveView.Refresh()
End Sub
Private Sub TransportationImprovementLinesAttributesForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Get Improvement Projects FeatureLayer
Dim pFeatLyr As IFeatureLayer
pFeatLyr = GetLayerByTOC("RV_ImprovementLines")
'Sort Location combobox
Call SortCboFromFeatLyr(pFeatLyr, "LOCATION", cboLocation)
End Sub
Private Sub cmdUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdUpdate.Click
Try
Dim pMxDoc As IMxDocument
pMxDoc = My.ArcMap.Document
Dim pMap As IMap
pMap = pMxDoc.FocusMap
'Get a reference to the editor.
Dim editor As IEditor
editor = My.ArcMap.Application.FindExtensionByName("esriEditor.Editor")
'Get Crossings FeatureLayer
Dim pFeatLyr As IFeatureLayer
pFeatLyr = GetLayerByTOC("RV_ImprovementLines")
'Get Dataset from FeatureLayer
Dim pEditDataset As IDataset
pEditDataset = pFeatLyr
'If not editing, start editing dataset's Workspace
If editor.EditState <> esriEditState.esriStateEditing Then
editor.StartEditing(pEditDataset.Workspace)
'editor.StartOperation()
End If
'Get Feature Reference
Dim pQueryFilter As IQueryFilter
pQueryFilter = New QueryFilter
' Set the where clause
pQueryFilter.WhereClause = "LOCATION ='" & cboLocation.Text & "'"
' Execute the query filter
Dim pFeatureCursor As IFeatureCursor
pFeatureCursor = pFeatLyr.Search(pQueryFilter, False)
'Initialize first (only) feature
Dim pFeat As IFeature
pFeat = pFeatureCursor.NextFeature
'Update attributes with user input
pFeat.Value(pFeat.Fields.FindField("Location")) = cboLocation.Text
pFeat.Value(pFeat.Fields.FindField("ID")) = txtProjectID.Text
pFeat.Value(pFeat.Fields.FindField("Phase")) = txtPhase.Text
pFeat.Value(pFeat.Fields.FindField("Descriptio")) = txtDescription.Text
pFeat.Value(pFeat.Fields.FindField("Agency")) = txtAgency.Text
pFeat.Value(pFeat.Fields.FindField("Cost")) = txtCost.Text
pFeat.Value(pFeat.Fields.FindField("DateEdited")) = txtDate.Text
pFeat.Value(pFeat.Fields.FindField("UserEdited")) = txtEdit.Text
'pFeatureCursor.UpdateFeature(pFeat)
' pFeat = pFeatureCursor.NextFeature
'Stop editing and save edits
editor.StopEditing(True)
' Flag the new selection
My.ArcMap.Document.ActivatedView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGeoSelection, Nothing, Nothing)
'Close form
Me.Close()
Catch ex As Exception
Windows.Forms.MessageBox.Show(ex.ToString, "error")
End Try
End Sub
Public Sub SortCboFromFeatLyr(ByVal pFeatLyr As IFeatureLayer, ByVal strField As String, ByVal CmboBox As System.Windows.Forms.ComboBox)
'Pass FeatureLayer to Table
Dim pTable As ITable
pTable = pFeatLyr
'Create TableSort object
Dim pTS As ITableSort
pTS = New TableSort
'Specify TableSort properties
With pTS
.Fields = strField 'Field to sort (just one for now)
.Ascending(strField) = True 'Ascending or Descending
.CaseSensitive(strField) = False
.Table = pTable 'Pass Table in
.Sort(Nothing) 'Perform the sort
End With
'Get index of Field's position in FeatureLayer table
Dim lngFldIdx As Long
lngFldIdx = pFeatLyr.FeatureClass.Fields.FindFieldByAliasName(strField)
'Pass sorted Rows to Cursor
Dim pCursor As ICursor
pCursor = pTS.Rows
'Get first Row in Cursor
Dim pRow As IRow
pRow = pCursor.NextRow
'Loop through Cursor to add items
Do While Not pRow Is Nothing
AddItem(CStr(pRow.Value(lngFldIdx)), CmboBox)
pRow = pCursor.NextRow
Loop
End Sub
Public Sub AddItem(ByVal sItem As String, ByVal cmbBox As System.Windows.Forms.ComboBox)
' adds item retaining alphabetic order, unique values
Dim l As Long
For l = 0 To cmbBox.ListCount - 1
Select Case StrComp(cmbBox.List(l), sItem, vbTextCompare)
Case 0 : Exit Sub ' already in the combobox
Case 1
cmbBox.AddItem(sItem, l)
Exit Sub
End Select
Next l
cmbBox.AddItem(sItem)
End Sub
Private Sub cboLocation_Change()
GetAttributesQuery()
SelectMapFeatures()
End Sub
Sub GetAttributesQuery()
Dim pMap As IMap
Dim pDoc As IMxDocument
pDoc = My.ArcMap.Document
pMap = pDoc.FocusMap
Dim pLayer As IFeatureLayer
pLayer = GetLayerByTOC("RV_ImprovementLines")
Dim pFL As IFeatureClass
pFL = pLayer.FeatureClass
Dim pTable As ITable
pTable = pLayer.FeatureClass
Dim pQueryFilter As IQueryFilter
Dim pCursor As ICursor
' create a query filter
pQueryFilter = New QueryFilter
' create the where statement
pQueryFilter.WhereClause = "LOCATION = '" & cboLocation.Text(cboLocation.Text) & "'"
' query the table passed into the function and use a cursor to hold the results
pCursor = pTable.Search(pQueryFilter, False)
Dim pRow As IRow
pRow = pCursor.NextRow
txtProjectID.Text = pRow.Value(pRow.Fields.FindField("ID"))
txtPhase.Text = pRow.Value(pRow.Fields.FindField("Phase"))
txtDescription.Text = pRow.Value(pRow.Fields.FindField("Descriptio"))
txtAgency.Text = pRow.Value(pRow.Fields.FindField("Agency"))
txtCost.Text = pRow.Value(pRow.Fields.FindField("Cost"))
txtDate.Text = pRow.Value(pRow.Fields.FindField("DateEdited"))
txtEdit.Text = pRow.Value(pRow.Fields.FindField("UserEdited"))
End Sub
Public Sub SelectMapFeatures()
Dim pMxDoc As IMxDocument
Dim pMap As IMap
Dim pActiveView As IActiveView
Dim pFeatureLayer As IFeatureLayer
Dim pFeatureSelection As IFeatureSelection
Dim pQueryFilter As IQueryFilter
pMxDoc = My.ArcMap.Document
pMap = pMxDoc.FocusMap
pActiveView = pMap
'For simplicity sake let's use the first layer in the map
pFeatureLayer = GetLayerByTOC("TransportationImprovementProjects_Lines")
pFeatureSelection = pFeatureLayer 'QI
'Create the query filter
pQueryFilter = New QueryFilter
pQueryFilter.WhereClause = "LOCATION = '" & cboLocation.Text(cboLocation.Text) & "'"
'Invalidate only the selection cache
'Flag the original selection
pActiveView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGeoSelection, Nothing, Nothing)
'Perform the selection
pFeatureSelection.SelectFeatures(pQueryFilter, ESRI.ArcGIS.Carto.esriSelectionResultEnum.esriSelectionResultNew, False)
'Flag the new selection
pActiveView.PartialRefresh(ESRI.ArcGIS.Carto.esriViewDrawPhase.esriViewGeoSelection, Nothing, Nothing)
End Sub
Public Function GetSelection(ByVal pFeatLyr As IFeatureLayer) As ISelectionSet
'Gets selection of feature layer and returns selection set
'Initialize the required variables
pMxDoc = My.ArcMap.Application.Document
Dim pFeatSel As IFeatureSelection
pFeatSel = pFeatLyr
GetSelection = pFeatSel.SelectionSet
End Function
Public Function GetLayerByTOC(ByVal lyrName As String) As IFeatureLayer
'This function finds a feature layer based on its TOC Name
'Initalize global variables
pMxDoc = My.ArcMap.Application.Document
Dim pMap As IMap
pMap = pMxDoc.FocusMap
Dim lyrCntr As Integer
Dim pFeatLyr As IFeatureLayer
For lyrCntr = 0 To pMap.LayerCount - 1
'Ensure that the layer is valid
If pMap.Layer(lyrCntr).Valid = True Then
'Ensure that the layer is a feature layer
If TypeOf pMap.Layer(lyrCntr) Is IFeatureLayer Then
pFeatLyr = pMap.Layer(lyrCntr)
If UCase(pMap.Layer(lyrCntr).Name) = UCase(lyrName) Then
GetLayerByTOC = pFeatLyr
Exit Function
End If
End If
End If
Next lyrCntr
Return Nothing
'Layer not found. Show a message
MsgBox("Layer " & lyrName & " not found !", vbCritical, "Error")
End Function
Public Function GetFeatSelCount(ByVal pFeatLyr As IFeatureLayer) As Long
'Returns # of selected featurues of feature layer as long integer
Dim pFeatSel As IFeatureSelection
pFeatSel = pFeatLyr
Dim pFeatSelectionSet As ISelectionSet
pFeatSelectionSet = pFeatSel.SelectionSet
GetFeatSelCount = pFeatSelectionSet.Count
End Function
End Class
Best Answer
The syntax for combobox (as well as other controls) is different in VB.NET. You should review the help to see the changes.