private void initiateMapRequest(Wms.Client.Server server)
{
this.statusBar.Text = "Retrieving Map ";
// Create a GetMap request for the layers COASTLINES and RATMIN (min temperatures).
Wms.Client.MapRequestBuilder mapRequest = new Wms.Client.MapRequestBuilder(
new System.Uri(server.Capabilities.GetCapabilitiesRequestUri));
mapRequest.Layers = "COASTLINES,RATMIN";
mapRequest.Styles = ","; // use default style for each layer
mapRequest.Format = "image/gif";
mapRequest.Srs = "EPSG:4326";
mapRequest.BoundingBox = "-180.0,-90.0,180.0,90.0";
mapRequest.Height = 300;
mapRequest.Width = 600;
mapRequest.Transparent = false;
// Create a retriever to execute the request.
Wms.Client.MapRetriever mapRetriever = new Wms.Client.MapRetriever(this);
mapRetriever.ProgressInterval = new System.TimeSpan(0, 0, 0, 0, 500);
mapRetriever.Done += new Wms.Client.RetrieverDoneEventHandler(this.mapRetrieveDone);
mapRetriever.Progress += new Wms.Client.RetrieverProgressEventHandler(this.showMapProgress);
mapRetriever.Request = mapRequest;
mapRetriever.Destination = System.IO.Path.GetTempFileName();
// Start the retrieval.
mapRetriever.Start();
}
static void Main(string[] args)
{
// Create a request to get the capabilities document from the server.
System.UriBuilder serverUri =
new System.UriBuilder(@"http://viz.globe.gov/viz-bin/wmt.cgi");
Wms.Client.CapabilitiesRequestBuilder capsRequest =
new Wms.Client.CapabilitiesRequestBuilder(serverUri.Uri);
// Retrieve the capabilities document and cache it locally.
System.Net.WebRequest wr = System.Net.WebRequest.Create(capsRequest.Uri);
// Handle any proxy the system may have defined.
System.Net.WebProxy proxy = System.Net.WebProxy.GetDefaultProxy();
if (proxy.Address != null)
{
wr.Proxy = proxy;
}
System.Net.WebResponse response = wr.GetResponse();
string fileName = System.IO.Path.GetTempPath() + @"capabilities.xml";
copyStreamToFile(response.GetResponseStream(), fileName);
// Parse the capabilities document and create a capabilities object
// for reading the parsed information. This is done by creating a Server
// object to represent the server associated with the capabilities.
Wms.Client.Server server = new Wms.Client.Server(fileName);
Wms.Client.Capabilities caps = server.Capabilities;
// Create a GetMap request using the MapRequestBuilder class. When
// creating the request, use the URI given in the server's capabilities
// document. This URI may be different than the one used to get the
// capabilities document.
Wms.Client.MapRequestBuilder mapRequest =
new Wms.Client.MapRequestBuilder(new System.Uri(caps.GetMapRequestUri));
mapRequest.Layers = "COASTLINES,RATMIN";
mapRequest.Styles = ","; // use default style for each layer
mapRequest.Format = "image/gif";
mapRequest.Srs = "EPSG:4326";
mapRequest.BoundingBox = "-180.0,-90.0,180.0,90.0";
mapRequest.Height = 300;
mapRequest.Width = 600;
mapRequest.Transparent = false;
// Retrieve the map and cache it locally.
System.Net.WebRequest mwr = System.Net.WebRequest.Create(mapRequest.Uri);
if (proxy.Address != null)
{
mwr.Proxy = proxy;
}
System.Net.WebResponse mresponse = mwr.GetResponse();
string mapFileName = System.IO.Path.GetTempPath() + @"wmsmap.gif";
copyStreamToFile(mresponse.GetResponseStream(), mapFileName);
// Use Internet Explorer to display the map.
invokeIe(mapFileName);
}
private void mapRetrieveDone(object sender, Wms.Client.RetrieverDoneArgs ea)
{
// This event handler is called when the map has been retrieved, or when an error
// occurs in the retrieval.
Wms.Client.MapRequestBuilder mapRequest = ea.Retriever.Request as Wms.Client.MapRequestBuilder;
if (ea.Reason == Wms.Client.RetrieverDoneArgs.CompletionReason.Completed)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(ea.DestinationFile);
for (int i = 0; i < this.mapRequests.Length; i++)
{
if (this.mapRequests[i] == mapRequest)
{
this.mapImages[i] = image;
}
}
}
}
private void mapRetrieveDone(object sender, Wms.Client.RetrieverDoneArgs ea)
{
// This event handler is called when the map has been retrieved, or when an error
// occurs in the retrieval.
Wms.Client.MapRequestBuilder mapRequest = ea.Retriever.Request as Wms.Client.MapRequestBuilder;
if (ea.Reason == Wms.Client.RetrieverDoneArgs.CompletionReason.Completed)
{
if (ea.ContentType.Equals("application/vnd.ogc.se_xml") ||
ea.ContentType.Equals("application/vnd.ogc.se+xml") ||
ea.ContentType.Equals("text/xml"))
{
string msg = "Retrieval of map returned an error:" + System.Environment.NewLine;
System.Windows.Forms.MessageBox.Show(msg, "WMS Server Exception",
System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
}
else
{
System.Drawing.Image image = System.Drawing.Image.FromFile(ea.DestinationFile);
this.pictureBox.Image = image;
this.statusBar.Text = System.String.Empty;
}
}
else if (ea.Reason == Wms.Client.RetrieverDoneArgs.CompletionReason.Error)
{
System.Windows.Forms.MessageBox.Show("Error retrieving map: " + ea.Message,
"Retrieval error",
System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
}
else if (ea.Reason == RetrieverDoneArgs.CompletionReason.TimedOut)
{
System.Windows.Forms.MessageBox.Show("Retrieval of map timed out.",
"Retrieval error",
System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Error);
}
}
