i am trying to make a program in c# based off another program that was written in java i would like to know if anyone nows what syntax you use to link other source files to your program.
in other words the c# equivalent to java's import code.

This is a blurb from Microsoft, the software is a free download from them. Should give you a clue about the import question.

thank you.

import sysinfo
import e32
import os
import os.path
import re
import time
import urllib
import contacts
import codecs

CODEC='utf-16'
CVSFILENAME='E:\\contactsdb.cvs'

def getFieldtypenames():
"Return the list of fields"
dic = contacts.fieldtypemap
num = [[v,k] for k,v in dic.items()]
num.sort()
if num[0][0]==0 and num[0][1]=='none':
del num[0]
return [v for k,v in num]


def exportContacts(filename):
messages = []

f = None
try:
f = codecs.open(filename,'w+',CODEC)
except:
print 'error creation file'

if not f:
return -1

fields = getFieldtypenames()
fieldformat = u''.join(['%('+v+')s,' for v in fields ])[0:-1]
fieldformat+= '\n'
fieldname = u''.join([''+v+',' for v in fields ])[0:-1]
f.write("%s\n"%fieldname)

try:
db = contacts.open()
idlist = db.keys()

for id in idlist:
newdict = dict([[k,''] for k in fields])
contact = db[id]
for field in contact:
newdict[field.type]=field.value
f.write(fieldformat%newdict)
except:
pass
f.close()


def main():
exportContacts(CVSFILENAME)


if __name__=='__main__':
main()

/*******************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*******************************************************************************/
package org.ofbiz.entity.model;

import java.io.Serializable;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.ofbiz.base.config.GenericConfigException;
import org.ofbiz.base.config.MainResourceHandler;
import org.ofbiz.base.config.ResourceHandler;
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilTimer;
import org.ofbiz.base.util.UtilXml;
import org.ofbiz.base.util.cache.UtilCache;
import org.ofbiz.entity.config.DatasourceInfo;
import org.ofbiz.entity.config.EntityConfigUtil;
import org.ofbiz.entity.config.FieldTypeInfo;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
* Generic Entity - Field Type Definition Reader
*
*/
public class ModelFieldTypeReader implements Serializable {

public static final String module = ModelFieldTypeReader.class.getName();
public static UtilCache readers = new UtilCache("entity.ModelFieldTypeReader", 0, 0);

public Map fieldTypeCache = null;

public int numEntities = 0;
public int numFields = 0;
public int numRelations = 0;

public String modelName;
public ResourceHandler fieldTypeResourceHandler;
public String entityFileName;

public static ModelFieldTypeReader getModelFieldTypeReader(String helperName) {
DatasourceInfo datasourceInfo = EntityConfigUtil.getDatasourceInfo(helperName);
if (datasourceInfo == null) {
throw new IllegalArgumentException("Could not find a datasource/helper with the name " + helperName);
}

String tempModelName = datasourceInfo.fieldTypeName;
ModelFieldTypeReader reader = (ModelFieldTypeReader) readers.get(tempModelName);

if (reader == null) // don't want to block here
{
synchronized (ModelFieldTypeReader.class) {
// must check if null again as one of the blocked threads can still enter
reader = (ModelFieldTypeReader) readers.get(tempModelName);
if (reader == null) {
reader = new ModelFieldTypeReader(tempModelName);
readers.put(tempModelName, reader);
}
}
}
return reader;
}

public ModelFieldTypeReader(String modelName) {
this.modelName = modelName;
FieldTypeInfo fieldTypeInfo = EntityConfigUtil.getFieldTypeInfo(modelName);

if (fieldTypeInfo == null) {
throw new IllegalStateException("Could not find a field-type definition with name \"" + modelName + "\"");
}
fieldTypeResourceHandler = new MainResourceHandler(EntityConfigUtil.ENTITY_ENGINE_XML_FILENAME, fieldTypeInfo.resourceElement);

// preload caches...
getFieldTypeCache();
}

public Map getFieldTypeCache() {
if (fieldTypeCache == null) // don't want to block here
{
synchronized (ModelFieldTypeReader.class) {
// must check if null again as one of the blocked threads can still enter
if (fieldTypeCache == null) // now it's safe
{
fieldTypeCache = new HashMap();

UtilTimer utilTimer = new UtilTimer();
// utilTimer.timerString("Before getDocument");

Document document = null;

try {
document = fieldTypeResourceHandler.getDocument();
} catch (GenericConfigException e) {
Debug.logError(e, "Error loading field type file", module);
}
if (document == null) {
fieldTypeCache = null;
return null;
}

// utilTimer.timerString("Before getDocumentElement");
Element docElement = document.getDocumentElement();

if (docElement == null) {
fieldTypeCache = null;
return null;
}
docElement.normalize();

Node curChild = docElement.getFirstChild();

int i = 0;

if (curChild != null) {
utilTimer.timerString("Before start of field type loop");
do {
if (curChild.getNodeType() == Node.ELEMENT_NODE && "field-type-def".equals(curChild.getNodeName())) {
i++;
// utilTimer.timerString("Start loop -- " + i + " --");
Element curFieldType = (Element) curChild;
String fieldTypeName = UtilXml.checkEmpty(curFieldType.getAttribute("type"), "[No type name]");
// utilTimer.timerString(" After fieldTypeName -- " + i + " --");
ModelFieldType fieldType = createModelFieldType(curFieldType, docElement, null);

// utilTimer.timerString(" After createModelFieldType -- " + i + " --");
if (fieldType != null) {
fieldTypeCache.put(fieldTypeName, fieldType);
// utilTimer.timerString(" After fieldTypeCache.put -- " + i + " --");
if (Debug.verboseOn()) Debug.logVerbose("-- getModelFieldType: #" + i + " Created fieldType: " + fieldTypeName, module);
} else {
Debug.logWarning("-- -- ENTITYGEN ERROR:getModelFieldType: Could not create fieldType for fieldTypeName: " + fieldTypeName, module);
}

}
} while ((curChild = curChild.getNextSibling()) != null);
} else
Debug.logWarning("No child nodes found.", module);
utilTimer.timerString("FINISHED - Total Field Types: " + i + " FINISHED");
}
}
}
return fieldTypeCache;
}

/** Creates a Collection with all of the ModelFieldType names
* @return A Collection of ModelFieldType names
*/
public Collection getFieldTypeNames() {
Map ftc = getFieldTypeCache();

return ftc.keySet();
}

/** Creates a Collection with all of the ModelFieldTypes
* @return A Collection of ModelFieldTypes
*/
public Collection getFieldTypes() {
Map ftc = getFieldTypeCache();

return ftc.values();
}

/** Gets an FieldType object based on a definition from the specified XML FieldType descriptor file.
* @param fieldTypeName The fieldTypeName of the FieldType definition to use.
* @return An FieldType object describing the specified fieldType of the specified descriptor file.
*/
public ModelFieldType getModelFieldType(String fieldTypeName) {
Map ftc = getFieldTypeCache();

if (ftc != null)
return (ModelFieldType) ftc.get(fieldTypeName);
else
return null;
}

ModelFieldType createModelFieldType(Element fieldTypeElement, Element docElement, UtilTimer utilTimer) {
if (fieldTypeElement == null) return null;

ModelFieldType field = new ModelFieldType(fieldTypeElement);

return field;
}
}

/*******************************************************************************
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*******************************************************************************/
package org.ofbiz.entity.model;

import java.io.Serializable;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import org.ofbiz.base.config.GenericConfigException;
import org.ofbiz.base.config.MainResourceHandler;
import org.ofbiz.base.config.ResourceHandler;
import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilTimer;
import org.ofbiz.base.util.UtilXml;
import org.ofbiz.base.util.cache.UtilCache;
import org.ofbiz.entity.config.DatasourceInfo;
import org.ofbiz.entity.config.EntityConfigUtil;
import org.ofbiz.entity.config.FieldTypeInfo;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
* Generic Entity - Field Type Definition Reader
*
*/
public class ModelFieldTypeReader implements Serializable {

public static final String module = ModelFieldTypeReader.class.getName();
public static UtilCache readers = new UtilCache("entity.ModelFieldTypeReader", 0, 0);

public Map fieldTypeCache = null;

public int numEntities = 0;
public int numFields = 0;
public int numRelations = 0;

public String modelName;
public ResourceHandler fieldTypeResourceHandler;
public String entityFileName;

public static ModelFieldTypeReader getModelFieldTypeReader(String helperName) {
DatasourceInfo datasourceInfo = EntityConfigUtil.getDatasourceInfo(helperName);
if (datasourceInfo == null) {
throw new IllegalArgumentException("Could not find a datasource/helper with the name " + helperName);
}

String tempModelName = datasourceInfo.fieldTypeName;
ModelFieldTypeReader reader = (ModelFieldTypeReader) readers.get(tempModelName);

if (reader == null) // don't want to block here
{
synchronized (ModelFieldTypeReader.class) {
// must check if null again as one of the blocked threads can still enter
reader = (ModelFieldTypeReader) readers.get(tempModelName);
if (reader == null) {
reader = new ModelFieldTypeReader(tempModelName);
readers.put(tempModelName, reader);
}
}
}
return reader;
}

public ModelFieldTypeReader(String modelName) {
this.modelName = modelName;
FieldTypeInfo fieldTypeInfo = EntityConfigUtil.getFieldTypeInfo(modelName);

if (fieldTypeInfo == null) {
throw new IllegalStateException("Could not find a field-type definition with name \"" + modelName + "\"");
}
fieldTypeResourceHandler = new MainResourceHandler(EntityConfigUtil.ENTITY_ENGINE_XML_FILENAME, fieldTypeInfo.resourceElement);

// preload caches...
getFieldTypeCache();
}

public Map getFieldTypeCache() {
if (fieldTypeCache == null) // don't want to block here
{
synchronized (ModelFieldTypeReader.class) {
// must check if null again as one of the blocked threads can still enter
if (fieldTypeCache == null) // now it's safe
{
fieldTypeCache = new HashMap();

UtilTimer utilTimer = new UtilTimer();
// utilTimer.timerString("Before getDocument");

Document document = null;

try {
document = fieldTypeResourceHandler.getDocument();
} catch (GenericConfigException e) {
Debug.logError(e, "Error loading field type file", module);
}
if (document == null) {
fieldTypeCache = null;
return null;
}

// utilTimer.timerString("Before getDocumentElement");
Element docElement = document.getDocumentElement();

if (docElement == null) {
fieldTypeCache = null;
return null;
}
docElement.normalize();

Node curChild = docElement.getFirstChild();

int i = 0;

if (curChild != null) {
utilTimer.timerString("Before start of field type loop");
do {
if (curChild.getNodeType() == Node.ELEMENT_NODE && "field-type-def".equals(curChild.getNodeName())) {
i++;
// utilTimer.timerString("Start loop -- " + i + " --");
Element curFieldType = (Element) curChild;
String fieldTypeName = UtilXml.checkEmpty(curFieldType.getAttribute("type"), "[No type name]");
// utilTimer.timerString(" After fieldTypeName -- " + i + " --");
ModelFieldType fieldType = createModelFieldType(curFieldType, docElement, null);

// utilTimer.timerString(" After createModelFieldType -- " + i + " --");
if (fieldType != null) {
fieldTypeCache.put(fieldTypeName, fieldType);
// utilTimer.timerString(" After fieldTypeCache.put -- " + i + " --");
if (Debug.verboseOn()) Debug.logVerbose("-- getModelFieldType: #" + i + " Created fieldType: " + fieldTypeName, module);
} else {
Debug.logWarning("-- -- ENTITYGEN ERROR:getModelFieldType: Could not create fieldType for fieldTypeName: " + fieldTypeName, module);
}

}
} while ((curChild = curChild.getNextSibling()) != null);
} else
Debug.logWarning("No child nodes found.", module);
utilTimer.timerString("FINISHED - Total Field Types: " + i + " FINISHED");
}
}
}
return fieldTypeCache;
}

/** Creates a Collection with all of the ModelFieldType names
* @return A Collection of ModelFieldType names
*/
public Collection getFieldTypeNames() {
Map ftc = getFieldTypeCache();

return ftc.keySet();
}

/** Creates a Collection with all of the ModelFieldTypes
* @return A Collection of ModelFieldTypes
*/
public Collection getFieldTypes() {
Map ftc = getFieldTypeCache();

return ftc.values();
}

/** Gets an FieldType object based on a definition from the specified XML FieldType descriptor file.
* @param fieldTypeName The fieldTypeName of the FieldType definition to use.
* @return An FieldType object describing the specified fieldType of the specified descriptor file.
*/
public ModelFieldType getModelFieldType(String fieldTypeName) {
Map ftc = getFieldTypeCache();

if (ftc != null)
return (ModelFieldType) ftc.get(fieldTypeName);
else
return null;
}

ModelFieldType createModelFieldType(Element fieldTypeElement, Element docElement, UtilTimer utilTimer) {
if (fieldTypeElement == null) return null;

ModelFieldType field = new ModelFieldType(fieldTypeElement);

return field;
}
}