private void runFunc()
{
Ogr.RegisterAll();
Gdal.SetConfigOption("SHAPE_ENCODING", "CP936");
string strInfo = string.Empty;
//打开数据
DataSource ds = Ogr.Open(mFileName, 0);
if (ds == null)
{
strInfo += string.Format("打开文件【{0}】失败！\n", mFileName);
return;
}
strInfo += string.Format("打开文件【{0}】成功！\n", mFileName);
CGetShp mdbToShp = new CGetShp(mFileName, mOutPath);
// 获取该数据源中的图层个数，一般shp数据图层只有一个，如果是mdb、dxf等图层就会有多个
int iLayerCount = ds.GetLayerCount();
strInfo += string.Format("个人地理数据库共包含{0}个图层！\n", iLayerCount);
for (int i = 0; i < iLayerCount; i++)
{
// 获取第一个图层
Layer oLayer = ds.GetLayerByIndex(i);
if (oLayer == null)
{
strInfo += string.Format("获取第{0}个图层失败！\n", i);
return;
}
strInfo += string.Format("第{0}个图层名称：{1}\n", i, oLayer.GetName());
//若当前图层为向量数据
if (oLayer.GetName().Contains("LINE"))
{
//调用方法获取向量信息，并传入想应的点图层名以方便查询
mdbToShp.readLine(ref oLayer, oLayer.GetName().Replace("LINE", "POINT"));
//break;
}
else
{
mdbToShp.readPoint(ref oLayer);
//break;
//mdbToShp.test(ref oLayer);
}
SetTextMessage(100 * (i + 1) / iLayerCount);
}
}
public void readLine(ref Layer oLayer, string pointTableName)
{
// 对图层进行初始化，如果对图层进行了过滤操作，执行这句后，之前的过滤全部清空
oLayer.ResetReading();
//打开数据
DataSource newDs = Ogr.Open(mSrcFile, 0);
if (newDs == null)
{
Console.WriteLine(string.Format("打开文件【{0}】失败！\n", mSrcFile));
return;
}
//根据图层名称获取相应的图层
Layer matchLayer = newDs.GetLayerByName(pointTableName);
Driver oDriver = null;
DataSource oDS = null;
Layer newLayer = null;
initShp(ref oLayer, ref oDriver, ref oDS, ref newLayer, LAYER_TYPE.LINE);
// 获取图层中的属性表表头并输出
string strInfo = "属性表结构信息：\n";
FeatureDefn oDefn = oLayer.GetLayerDefn();
int iFieldCount = oDefn.GetFieldCount();
for (int iAttr = 0; iAttr < iFieldCount; iAttr++)
{
FieldDefn oField = oDefn.GetFieldDefn(iAttr);
FieldType type = oField.GetFieldType();
//为新图层创建属性
FieldDefn newField = new FieldDefn(oField.GetNameRef(), type);
if (type == FieldType.OFTString)
{
newField.SetWidth(oField.GetWidth());
}
newLayer.CreateField(newField, 1);
strInfo += string.Format("{0}:{1} ({2}.{3})\n", oField.GetNameRef(),
oField.GetFieldTypeName(oField.GetFieldType()),
oField.GetWidth(), oField.GetPrecision());
}
FeatureDefn newDefn = newLayer.GetLayerDefn();
// 输出图层中的要素个数
strInfo += string.Format("要素个数 = {0}\n", oLayer.GetFeatureCount(0));
Feature oFeature = null;
// 下面开始遍历图层中的要素
double S_X = 0.0;
double S_Y = 0.0;
double E_X = 0.0;
double E_Y = 0.0;
while ((oFeature = oLayer.GetNextFeature()) != null)
{
strInfo += string.Format("\n当前处理第{0}个: \n属性值：", oFeature.GetFID());
//为新图层创建要素
Feature oFeatureLineString = new Feature(newDefn);
string sql = string.Empty;
// 获取要素中的属性表内容
for (int iField = 0; iField < iFieldCount; iField++)
{
FieldDefn oFieldDefn = oDefn.GetFieldDefn(iField);
string name = oFieldDefn.GetNameRef();
FieldType type = oFieldDefn.GetFieldType();
switch (type)
{
case FieldType.OFTString:
IntPtr pchar = OGR_F_GetFieldAsString(Feature.getCPtr(oFeature), iField);
string val = Marshal.PtrToStringAnsi(pchar);
oFeatureLineString.SetField(iField, val);
switch (name)
{
case "S_Point":
sql = oFeature.GetFieldAsString(iField);
getCoordinate(ref matchLayer, ref sql, ref S_X, ref S_Y);
break;
case "E_Point":
sql = oFeature.GetFieldAsString(iField);
getCoordinate(ref matchLayer, ref sql, ref E_X, ref E_Y);
break;
default:
break;
}
break;
case FieldType.OFTReal:
oFeatureLineString.SetField(name, oFeature.GetFieldAsDouble(iField));
break;
case FieldType.OFTInteger:
oFeatureLineString.SetField(iField, oFeature.GetFieldAsInteger(iField));
break;
default:
oFeatureLineString.SetField(iField, oFeature.GetFieldAsString(iField));
break;
}
}
Geometry oGeometry = Geometry.CreateFromWkt(string.Format("LINESTRING({0} {1},{2} {3})", S_X, S_Y, E_X, E_Y));
oFeatureLineString.SetGeometryDirectly(oGeometry);
newLayer.CreateFeature(oFeatureLineString);
oGeometry.Dispose();
}
strInfo += "\n数据集关闭！";
oDS.Dispose();
}