static GISAttribute ReadAttribute(DataTable table, int RowIndex)
{
GISAttribute attribute = new GISAttribute();
DataRow row = table.Rows[RowIndex]; //该函数读取给定序号的rowindex的一行数据
for (int i = 0; i < table.Columns.Count; i++)
{
attribute.AddValue(row[i]);
}
return(attribute);
}
public GISAttribute attributepart; //空间与属性信息
public GISFeature(GISSpatial spatial, GISAttribute attribute) //构造函数传入空间与属性信息
{
spatialpart = spatial;
attributepart = attribute;
}
//读取一个gisfeature的所有属性值，放在gisfile中 此函数需要事先知道字段结构，根据字段类型选取适当的读取函数
static GISAttribute ReadAttributes(List <GISField> fs, BinaryReader br)
{
GISAttribute attribute = new GISAttribute();
for (int i = 0; i < fs.Count; i++)
{
Type type = fs[i].datatype;
if (type.ToString() == "System.Boolean")
{
attribute.AddValue(br.ReadBoolean());
}
else if (type.ToString() == "System.Boolean")
{
attribute.AddValue(br.ReadBoolean());
}
else if (type.ToString() == "System.Byte")
{
attribute.AddValue(br.ReadByte());
}
else if (type.ToString() == "System.Char")
{
attribute.AddValue(br.ReadChar());
}
else if (type.ToString() == "System.Decimal")
{
attribute.AddValue(br.ReadDecimal());
}
else if (type.ToString() == "System.Double")
{
attribute.AddValue(br.ReadDouble());
}
else if (type.ToString() == "System.Single")
{
attribute.AddValue(br.ReadSingle());
}
else if (type.ToString() == "System.Int32")
{
attribute.AddValue(br.ReadInt32());
}
else if (type.ToString() == "System.Int64")
{
attribute.AddValue(br.ReadInt64());
}
else if (type.ToString() == "System.UInt16")
{
attribute.AddValue(br.ReadUInt16());
}
else if (type.ToString() == "System.UInt32")
{
attribute.AddValue(br.ReadUInt32());
}
else if (type.ToString() == "System.UInt64")
{
attribute.AddValue(br.ReadUInt64());
}
else if (type.ToString() == "System.Boolean")
{
attribute.AddValue(br.ReadBoolean());
}
else if (type.ToString() == "System.String")
{
attribute.AddValue(GISTools.ReadString(br));
}
}
return(attribute);
}
static void WriteAttributes(GISAttribute attribute, BinaryWriter bw)
{
for (int i = 0; i < attribute.ValueCount(); i++)
{
Type type = attribute.GetValue(i).GetType();
if (type.ToString() == "System.Boolean")
{
bw.Write((bool)attribute.GetValue(i));
}
else if (type.ToString() == "System.Byte")
{
bw.Write((byte)attribute.GetValue(i));
}
else if (type.ToString() == "System.Char")
{
bw.Write((char)attribute.GetValue(i));
}
else if (type.ToString() == "System.Decimal")
{
bw.Write((decimal)attribute.GetValue(i));
}
else if (type.ToString() == "System.Double")
{
bw.Write((double)attribute.GetValue(i));
}
else if (type.ToString() == "System.Single")
{
bw.Write((float)attribute.GetValue(i));
}
else if (type.ToString() == "System.Int32")
{
bw.Write((int)attribute.GetValue(i));
}
else if (type.ToString() == "System.Int64")
{
bw.Write((long)attribute.GetValue(i));
}
else if (type.ToString() == "System.UInt16")
{
bw.Write((ushort)attribute.GetValue(i));
}
else if (type.ToString() == "System.UInt32")
{
bw.Write((uint)attribute.GetValue(i));
}
else if (type.ToString() == "System.UInt64")
{
bw.Write((ulong)attribute.GetValue(i));
}
else if (type.ToString() == "System.SByte")
{
bw.Write((sbyte)attribute.GetValue(i));
}
else if (type.ToString() == "System.Int16")
{
bw.Write((short)attribute.GetValue(i));
}
else if (type.ToString() == "System.String")
{
GISTools.WriteString((string)attribute.GetValue(i), bw);
}
}
}
