topic How to zoom to a specific scale in ArcMap 9.3 in Vb.net? in ArcObjects SDK Questions

How to zoom to a specific scale in ArcMap 9.3 in Vb.net?

dgesridgesri — Tue, 07 Jun 2011 05:06:22 GMT

Greetings,

I wonder if there is any way to set the scale of the "Zoom to selected Feature" functionality through Vb.Net code?

But if this is can not be done. Could I zoom to the selected feature then set the scale to the value I want similar to what we can do in ArcMap 9.3(Zoom to selected then enter the value of the scale in the scale text found on the Standard Toolbar). Is this possible? How?

Please advise...

Re: How to zoom to a specific scale in ArcMap 9.3 in Vb.net?

DuncanHornby — Sat, 11 Dec 2021 09:30:22 GMT

dgesri,

What you are asking does not make sense. If you want to zoom to a selection then to zoom to the extent of that selection must alter the scale. Below is the VBA code that you could use to call the zoom to selection tool.

Public Sub ZoomToAllSelectedFeatures()
        ' Zoom to selection by calling standard tool
        Dim pCmdItem As ICommandItem
        Dim pUID As New UID
        pUID.Value = "{AB073B49-DE5E-11D1-AA80-00C04FA37860}"
        Set pCmdItem = ThisDocument.CommandBars.Find(pUID)
        pCmdItem.Execute
End Sub

Duncan

Re: How to zoom to a specific scale in ArcMap 9.3 in Vb.net?

dgesridgesri — Tue, 07 Jun 2011 12:13:15 GMT

Thank you Mr. Hornbydd for your interest on this post,

Well, I`m already using this function "ZoomToAllSelectedFeatures" but I want to change the scale of the zoom if possible.

Or I think I can change the scale of the extent after I call that function but through vb.net code. Again if this is possible, please advise?

Thanks guys...

Re: How to zoom to a specific scale in ArcMap 9.3 in Vb.net?

DuncanHornby — Sat, 11 Dec 2021 09:30:26 GMT

You can change map scale like this:

Dim pMap As IMap
        Dim pmxDoc As IMxDocument
        Set pmxDoc = ThisDocument
        Set pMap = pmxDoc.FocusMap
        pMap.MapScale = 10000

This VBA example assumes your data frame has its coordinate system set.

Duncan

Re: How to zoom to a specific scale in ArcMap 9.3 in Vb.net?

dgesridgesri — Wed, 08 Jun 2011 10:55:00 GMT

Thank you very much Mr. Hornbydd,

I was thinking of changing the zoom scale so when I zoom to a selected feature then it zoom to the location of that selected feature but with a specific scale.

However, what you have posted about changing the map scale is another workaround and it helped me a lot..

Again thank you man...