1.书签
private void textBox1_TextChanged(object sender, EventArgs e)
{ if (txtBookmark.Text == "") { button1.Enabled = false; } else { button1.Enabled = true; } }
//确定
private void button1_Click(object sender, EventArgs e) { m_bookmark = txtBookmark.Text; txtBookmark.Text = ""; m_check = 1; this.Close(); }
//取消
private void button2_Click(object sender, EventArgs e) { txtBookmark.Text = ""; m_check = 0; this.Close(); }
具体源码
namespace WindowsFormsApplication1
{ public partial class FrmBookmark : Form { private string m_bookmark; //书签名 private int m_check; //是否创建书签 public FrmBookmark() { InitializeComponent(); }private void textBox1_TextChanged(object sender, EventArgs e)
{ if (txtBookmark.Text == "") { button1.Enabled = false; } else { button1.Enabled = true; } } //设置书签名为只读 public string Bookmark { get { return m_bookmark; } }//是否创建书签变量为只读
public int Check { get { return m_check; } } //确定 private void button1_Click(object sender, EventArgs e) { m_bookmark = txtBookmark.Text; txtBookmark.Text = ""; m_check = 1; this.Close(); } //取消 private void button2_Click(object sender, EventArgs e) { txtBookmark.Text = ""; m_check = 0; this.Close(); }}
#region 添加书签
private void barButtonItem12_ItemClick(object sender, ItemClickEventArgs e) { //ICommand pCmmd; //ITool pTool; FrmBookmark frmBookMark = new FrmBookmark(); frmBookMark.ShowDialog(); string pName = string.Empty; int check = frmBookMark.Check;if (check == 1)
{ pName = frmBookMark.Bookmark; } if (string.IsNullOrEmpty(pName)) return;//书签进行重名判断
IMapBookmarks mapBookmarks = axMapControl1.Map as IMapBookmarks; IEnumSpatialBookmark enumSpatialBookmarks = mapBookmarks.Bookmarks; enumSpatialBookmarks.Reset(); ISpatialBookmark pSpatialBookmark;while ((pSpatialBookmark = enumSpatialBookmarks.Next()) != null)
{ if (pName == pSpatialBookmark.Name) { DialogResult dr = MessageBox.Show("此书签名已存在！是否替换？", "提示", MessageBoxButtons.YesNoCancel); if (dr == DialogResult.Yes) { mapBookmarks.RemoveBookmark(pSpatialBookmark); } else if (dr == DialogResult.No) { frmBookMark.ShowDialog(); } else { return; } } }//获取当前地图的对象
IActiveView pActiveView = axMapControl1.Map as IActiveView; //创建一个新的书签并设置其位置范围为当前视图的范围 IAOIBookmark pBookmark = new AOIBookmarkClass(); pBookmark.Location = pActiveView.Extent; //获得书签名 pBookmark.Name = pName; //通过IMapBookmarks接口访问当前地图书签集，添加书签到地图的书签集中 IMapBookmarks pMapBookmarks = axMapControl1.Map as IMapBookmarks; pMapBookmarks.AddBookmark(pBookmark);}
#endregion
2.管理书签
具体源码
namespace WindowsFormsApplication1
{ public partial class FrmManageBookmark : Form { private IMap _currentMap = null; Dictionary<string, ISpatialBookmark> pDictionary = new Dictionary<string, ISpatialBookmark>(); IMapBookmarks mapBookmarks = null; public FrmManageBookmark(IMap pMap) { InitializeComponent(); _currentMap = pMap; //获取当前地图 InitControl(); }//获取空间书签，对tlstBookMark进行初始化
private void InitControl() { mapBookmarks = _currentMap as IMapBookmarks; IEnumSpatialBookmark enumSpatialBookmarks = mapBookmarks.Bookmarks; enumSpatialBookmarks.Reset(); ISpatialBookmark pSpatialBookmark = enumSpatialBookmarks.Next();string sBookMarkName = string.Empty;
while (pSpatialBookmark != null) { sBookMarkName = pSpatialBookmark.Name; //增加树节点 treeView1.Nodes.Add(sBookMarkName); //添加到数据字典 pDictionary.Add(sBookMarkName, pSpatialBookmark); pSpatialBookmark = enumSpatialBookmarks.Next(); } } public FrmManageBookmark() { InitializeComponent(); } //定位 private void button1_Click(object sender, EventArgs e) { TreeNode pSelectedNode = treeView1.SelectedNode; //获得选中的书签对象 ISpatialBookmark pSpatialBM = pDictionary[pSelectedNode.Text]; //缩放到选中书签的视图范围 pSpatialBM.ZoomTo(_currentMap); IActiveView pActiveView = _currentMap as IActiveView; pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null); } //删除书签 private void button2_Click(object sender, EventArgs e) { TreeNode pSelectedNode = treeView1.SelectedNode; ISpatialBookmark pSpatialBookmark = pDictionary[pSelectedNode.Text]; //删除选中的书签对象 mapBookmarks.RemoveBookmark(pSpatialBookmark); //删除字典中数据 pDictionary.Remove(pSelectedNode.Text); //删除树节点 treeView1.Nodes.Remove(pSelectedNode); treeView1.Refresh(); }private void button3_Click(object sender, EventArgs e)
{ Close(); } private void tlstBookMark_MouseDoubleClick(object sender, MouseEventArgs e) { //调用定位执行命令 button1.PerformClick(); }private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{}
}
#region 管理书签
private void barButtonItem13_ItemClick(object sender, ItemClickEventArgs e) { try { FrmManageBookmark frmManageBookMark = new FrmManageBookmark(axMapControl1.Map); frmManageBookMark.ShowDialog(); } catch (Exception ex) { MessageBox.Show(ex.Message); } } #endregion
end：地图缩放
#region 地图浏览放大
private void barButtonItem8_ItemClick(object sender, ItemClickEventArgs e) { IEnvelope pEnvelope; pEnvelope = axMapControl1.Extent; pEnvelope.Expand(0.5, 0.5, true);//放大2倍 axMapControl1.Extent = pEnvelope; axMapControl1.ActiveView.Refresh(); } #endregion #region 缩小 private void barButtonItem9_ItemClick(object sender, ItemClickEventArgs e) { IActiveView pActiveView = axMapControl1.ActiveView; IPoint centerPoint = new PointClass(); centerPoint.PutCoords((pActiveView.Extent.XMin + pActiveView.Extent.XMax) / 2, (pActiveView.Extent.YMin + pActiveView.Extent.YMax) / 2); IEnvelope envelope = pActiveView.Extent; envelope.Expand(1.5, 1.5, true);//和放大区别在于Expand函数参数不同 pActiveView.Extent.CenterAt(centerPoint); pActiveView.Extent = envelope; pActiveView.Refresh();}
#endregion