本文整理汇总了C#中GeoAPI.AsText方法的典型用法代码示例。如果您正苦于以下问题：C# GeoAPI.AsText方法的具体用法？C# GeoAPI.AsText怎么用？C# GeoAPI.AsText使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类GeoAPI的用法示例。
在下文中一共展示了GeoAPI.AsText方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: ExecuteIntersectionQuery
/// <summary>
/// Returns the features that intersects with 'geom'
/// </summary>
/// <param name="geom"></param>
/// <param name="ds">FeatureDataSet to fill data into</param>
public void ExecuteIntersectionQuery(GeoAPI.Geometries.IGeometry geom, FeatureDataSet ds)
{
List<IGeometry> features = new List<IGeometry>();
using (SqlConnection conn = new SqlConnection(this.ConnectionString))
{
string strGeom;
if (this.TargetSRID > 0 && this.SRID > 0 && this.SRID != this.TargetSRID)
strGeom = "ST.Transform(ST.GeomFromText('" + geom.AsText() + "'," + this.TargetSRID.ToString() + ")," + this.SRID.ToString() + ")";
else
strGeom = "ST.GeomFromText('" + geom.AsText() + "', " + this.SRID.ToString() + ")";
string strSQL = "SELECT " + this.FeatureColumns + ", ST.AsBinary(" + this.BuildGeometryExpression() + ") As sharpmap_tempgeometry ";
strSQL += "FROM ST.RelateQuery" + this.BuildSpatialQuerySuffix() + "(" + strGeom + ", 'intersects')";
if (!String.IsNullOrEmpty(this.DefinitionQuery))
strSQL += " WHERE " + this.DefinitionQuery;
if (!String.IsNullOrEmpty(this.OrderQuery))
strSQL += " ORDER BY " + this.OrderQuery;
using (SqlDataAdapter adapter = new SqlDataAdapter(strSQL, conn))
{
conn.Open();
adapter.Fill(ds);
conn.Close();
if (ds.Tables.Count > 0)
{
FeatureDataTable fdt = new FeatureDataTable(ds.Tables[0]);
foreach (System.Data.DataColumn col in ds.Tables[0].Columns)
if (col.ColumnName != this.GeometryColumn && !col.ColumnName.StartsWith(this.GeometryColumn + "_Envelope_") && col.ColumnName != "sharpmap_tempgeometry")
fdt.Columns.Add(col.ColumnName, col.DataType, col.Expression);
foreach (System.Data.DataRow dr in ds.Tables[0].Rows)
{
SharpMap.Data.FeatureDataRow fdr = fdt.NewRow();
foreach (System.Data.DataColumn col in ds.Tables[0].Columns)
if (col.ColumnName != this.GeometryColumn && !col.ColumnName.StartsWith(this.GeometryColumn + "_Envelope_") && col.ColumnName != "sharpmap_tempgeometry")
fdr[col.ColumnName] = dr[col];
if (dr["sharpmap_tempgeometry"] != DBNull.Value)
fdr.Geometry = SharpMap.Converters.WellKnownBinary.GeometryFromWKB.Parse((byte[])dr["sharpmap_tempgeometry"]);
fdt.AddRow(fdr);
}
ds.Tables.Add(fdt);
}
}
}
}