Worked perfectly. Thank you very much. Now my application allows the user to
create multiple queries on the same "query layer". Rather than creating a
new layer for each query.
Thanks again.
Jackie Ng wrote:
>
> Remove() is expecting a MgLayerBase object, you are passing in a string.
> Hence the compilation error.
>
> Maybe try something like this instead:
>
> MgMap map = new MgMap(siteConnection);
> map.Open(mgMapName);
>
> MgLayerCollection layerCol = map.GetLayers();
> string layerName = "myLayer";
>
> MgLayer layerToRemove = null;
> foreach(MgLayer layer in layerCol)
> {
> if(layer.Name == layerName)
> {
> layerToRemove = layer;
> break;
> }
> }
>
> if(layerToRemove != null)
> {
> layerCol.Remove(layerToRemove);
> }
>
>
> - Jackie.
>
>
> Alex Fordyce wrote:
>>
>> I'm to see if a layer exists and remove it if it exists. The layer would
>> have been saved as a temporary resource. Here is the code.
>>
>> // get the map
>> MgMap map = new MgMap(siteConnection);
>> map.Open(mgMapName);
>>
>> MgLayerCollection layerCol = map.GetLayers();
>>
>> if(layerCol.Contains("myLayer"))
>> {
>> layerCol.Remove("myLayer");
>> }
>>
>> .... Add myLayer code here .....
>>
>> I get the following error whether or not the layer exists:
>>
>> Compiler Error Message: CS1502: The best overloaded method match for
>> 'OSGeo.MapGuide.MgLayerCollection.Remove(OSGeo.MapGuide.MgLayerBase)' has
>> some invalid arguments
>>
>> Source Error:
>>
>> Line 42: if(layerCol.Contains("myLayer"))
>> Line 43: {
>> Line 44: layerCol.Remove("myLayer");
>> Line 45: }
>> Line 46:
>>
>> Anyone have any suggestions?
>>
>> Thanks in advance.
>>
>> alex
>>
>
>
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