private string LoadMapFileInPreviewControl(string fileName)
{
string msg = string.Empty;
if (File.Exists(fileName))
{
string ext = Path.GetExtension(fileName).ToLower();
if (ext == ".mxd")
{
if (mapControl.CheckMxFile(fileName))
{
try
{
mapControl.LoadMxFile(fileName);
mapControl.Extent = mapControl.FullExtent;
}
catch (Exception ex)
{
msg = "ESRI Map Control generated an error.\nFile: " + fileName + "\nError: " + ex;
}
}
else
{
msg = "Map document not valid: " + fileName;
}
}
else
if (ext == ".lyr")
{
try
{
mapControl.ClearLayers();
mapControl.SpatialReference = null;
mapControl.AddLayerFromFile(fileName);
mapControl.get_Layer(0).Visible = true; //Make sure the layer is visible
//Set the Spatial Ref to match the current layer, not the previous layer.
//mapControl.SpatialReference = mapControl.get_Layer(0).SpatialReference;
mapControl.Extent = mapControl.FullExtent;
}
catch (Exception ex)
{
msg = "ESRI Map Control generated an error.\nFile: " + fileName + "\nError: " + ex;
}
}
else
{
msg = "File must be a map document (.mxd) or a layer file (.lyr): " + fileName;
}
}
else
{
msg = "File not found: " + fileName;
}
return(msg);
}
//添加lyr图层数据
private void addLyrLayer(string fullfilepath, AxMapControl mapControl)
{
if (fullfilepath == "")
{
return;
}
mapControl.AddLayerFromFile(fullfilepath, 0);//添加lyr图层
IActiveView activeView = mapControl.Map as IActiveView;
activeView.Extent = mapControl.FullExtent;
mapControl.Refresh();
}
/// <summary>
/// 将指定路径下的要素图层加载到地图控件中
/// <para>可加载lyr/shp/mdb/gdb/dwg等多种数据源图层，允许的路径形式参考<see cref="FeatureClassEx.FromPath"/>方法</para>
/// </summary>
/// <param name="mapControl">地图控件</param>
/// <param name="layerPath">要素类图层的完整路径，允许的路径形式参考<see cref="FeatureClassEx.FromPath"/>方法</param>
public static void LoadFeatureLayer(this AxMapControl mapControl, string layerPath)
{
if (Path.GetExtension(layerPath) == ".lyr" && File.Exists(layerPath))
{
mapControl.AddLayerFromFile(layerPath);
return;
}
var featureClass = FeatureClassEx.FromPath(layerPath);
mapControl.AddLayer(new FeatureLayerClass {
FeatureClass = featureClass, Name = featureClass.AliasName
});
}
/// <summary>
/// 将指定路径下的要素数据源数据，加载到地图控件中
/// <para>可加载lyr/shp/mdb/gdb/dwg等多种数据源数据，允许的路径形式参考<see cref="FeatureClassEx.AllFromPath"/>方法</para>
/// </summary>
/// <param name="mapControl">地图控件</param>
/// <param name="connStrOrPath">要素数据源路径，允许的路径形式参考<see cref="FeatureClassEx.AllFromPath(string)"/>方法</param>
public static void LoadFeatureLayers(this AxMapControl mapControl, string connStrOrPath)
{
if (Path.GetExtension(connStrOrPath) == ".lyr" && File.Exists(connStrOrPath))
{
mapControl.AddLayerFromFile(connStrOrPath);
return;
}
var featureClasses = FeatureClassEx.AllFromPath(connStrOrPath);
foreach (var featureClass in featureClasses)
{
mapControl.AddLayer(new FeatureLayerClass {
FeatureClass = featureClass, Name = featureClass.AliasName
});
}
}
public static bool LoadKZBJ(string filePath, AxMapControl mapControl)
{
IWorkspaceFactory factory = new ShapefileWorkspaceFactory();
IWorkspace workspace = factory.OpenFromFile(System.IO.Path.GetDirectoryName(filePath), 0);
IFeatureWorkspace featureWorkspace = workspace as IFeatureWorkspace;
IFeatureClass featureClass = featureWorkspace.OpenFeatureClass(System.IO.Path.GetFileName(filePath));
mapControl.AddLayerFromFile(string.Format("{0}\\扩展边界.lyr", Application.StartupPath), 3);
for (var i = 0; i < mapControl.LayerCount; i++)
{
var layer = mapControl.get_Layer(i);
if (layer.Name == "扩展边界")
{
var fl = layer as IFeatureLayer;
fl.FeatureClass = featureClass;
return(true);
}
}
return(false);
}
