hilite and zoom query in c#

[sonj]

Hi,

For me also same problem. Is there any success at your end ?
I tryed this code
result = myLayer.queryByAttributes(map,"MAPNAME","[MAPNAME]=='" +
txtUser.Text + "'",0);
Error : Requested layer has no templates defined so is not queryable


lakku wrote:
> 
> iam working with mapserver using C# mapscript
> iam displaying a map in imagebutton control
> now i want to zoom the features on the map related to query
> ie when user selects the layer and sub layer from dropdownlists and enters
> the value in the textbox then related features must be hilited and zoomed
> on the map
> i have wriiten a code for only hiliting the features but it is not working
> my code is :
> ddlLayersQuery is the dropdownlist (layers)
> ddlFieldsQuery is the dropdownlist (sublayers)
> txtValue is the textbox
>  Dim image As imageObj
>         Dim img As Byte()
>         Dim ms As MemoryStream
>         Dim bitmap, mapimage As Bitmap
>  Dim str, st, st1 As String
>         str = ddlLayersQuery.SelectedItem.ToString
>         layer = map.getLayerByName(str)
>         st = ddlFieldsQuery.SelectedItem.ToString
> 
>         Try
> 
>             layer.queryByAttributes(map, st, txtValue.Text, 1)
> 
>         Catch ex As Exception
> 
>             MsgBox(ex.Message)
>         End Try
>         Try
> 
>             image = map.drawQuery()
> 
>             'image.save("mapimg.png", map)
>             img = image.getBytes()
>         Finally
>             ms = New MemoryStream(img)
> 
>             mapimage = System.Drawing.Image.FromStream(ms)
>             bitmap = mapimage
>             bitmap.Save(Response.OutputStream,
> System.Drawing.Imaging.ImageFormat.Jpeg)
>         End Try
> 
> 
> plz correct my code
> 
> 

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