static void WriteFields(List <GISField> fields, BinaryWriter bw)
{
for (int fieldindex = 0; fieldindex < fields.Count; fieldindex++)
{
GISField field = fields[fieldindex];
bw.Write(GISTools.TypeToInt(field.datatype)); //字段类型
GISTools.WriteString(field.name, bw); //字段名
}
}
//写文件函数主框架
public static void WriteFile(GISLayer layer, string filename)
{
FileStream fsr = new FileStream(filename, FileMode.Create); //根据文件名创建文件流
BinaryWriter bw = new BinaryWriter(fsr);
WriteFileHeader(layer, bw); //写入头文件
GISTools.WriteString(layer.Name, bw); //写入图层名字
WriteFields(layer.Fields, bw); //写入字段
WriteFeatures(layer, bw);
bw.Close();
fsr.Close();
}
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);
}
}
}
