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Update WmsImageLayer.cs

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This commit is contained in:
ClemensF 2020-07-16 16:32:22 +02:00
parent fb68983749
commit 9956e78028
1 changed files with 28 additions and 3 deletions
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31
MapControl/Shared/WmsImageLayer.cs
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@ -5,6 +5,7 @@
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Xml.Linq;
@ -120,6 +121,30 @@ namespace MapControl
return element;
}
/// <summary>
/// Gets a response string from the URL returned by GetFeatureInfoRequestUri().
/// </summary>
public async Task<string> GetFeatureInfoTextAsync(Point position, string format = "text/plain")
{
string response = null;
if (ServiceUri != null)
{
var uri = GetFeatureInfoRequestUri(position, format);
try
{
response = await ImageLoader.HttpClient.GetStringAsync(uri);
}
catch (Exception ex)
{
Debug.WriteLine("WmsImageLayer: {0}: {1}", uri, ex.Message);
}
}
return response;
}
/// <summary>
/// Loads an XElement from the URL returned by GetFeatureInfoRequestUri().
/// </summary>
@ -129,7 +154,7 @@ namespace MapControl
if (ServiceUri != null)
{
var uri = GetFeatureInfoRequestUri(position);
var uri = GetFeatureInfoRequestUri(position, "text/xml");
try
{
@ -223,7 +248,7 @@ namespace MapControl
/// <summary>
/// Returns a GetFeatureInfo request URL string.
/// </summary>
protected virtual string GetFeatureInfoRequestUri(Point position)
protected virtual string GetFeatureInfoRequestUri(Point position, string format)
{
string uri = null;
var projection = ParentMap?.MapProjection;
@ -263,7 +288,7 @@ namespace MapControl
uri += "&HEIGHT=" + (int)Math.Round(viewRect.Height);
uri += "&I=" + (int)Math.Round(imagePos.X);
uri += "&J=" + (int)Math.Round(imagePos.Y);
uri += "&INFO_FORMAT=text/xml";
uri += "&INFO_FORMAT=" + format;
}
return uri.Replace(" ", "%20");