mapxtreme2005 改变选中的图元样式-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_5378/article/details/81693365

本文介绍如何使用MapInfo进行复合样式设置，并演示了创建临时表、删除记录及插入特定特征记录的过程。通过代码示例展示了MapInfo在地理信息系统(GIS)中的具体应用。

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MapInfo.Styles.CompositeStyle compositeStyle = GetOpaquesStyle(false, System.Drawing.Color.Blue);

if (map != null)
{
if (map.Layers[SysCommon.TempTableAlias] != null)
{
map.Layers.Remove(SysCommon.TempTableAlias);
}
if (map.Layers[SysCommon.TempLayerAlias] != null)
{
map.Layers.Remove(SysCommon.TempLayerAlias);
}
}
MapInfo.Engine.Session.Current.Catalog.CloseTable(SysCommon.TempTableAlias);

MapInfo.Data.Table newtable = CreateCustomerTempTable(SysCommon.TempTableAlias, LayerAlias);
MapInfo.Data.MIConnection conn = new MIConnection();
conn.Open();
MapInfo.Data.MICommand comm = conn.CreateCommand();
comm.CommandText = "delete " + SysCommon.TempTableAlias;
comm.Prepare();
comm.ExecuteNonQuery();

foreach (Feature ftr in irfc)
{
comm.CommandText = "insert into " + newtable.Alias + " select * from " + LayerAlias + " where MI_Key ='" + ftr.Key + "'";
comm.ExecuteNonQuery();
}
conn.Close();
(map.Layers[SysCommon.TempTableAlias] as FeatureLayer).Modifiers.Clear();
MapInfo.Mapping.FeatureOverrideStyleModifier fsmtemp = new MapInfo.Mapping.FeatureOverrideStyleModifier(null, compositeStyle);
(map.Layers[SysCommon.TempTableAlias] as FeatureLayer).Modifiers.Append(fsmtemp);