public static void MergeManyShpFile(string[] filenames, string TargetFile)
{
BinaryReader binaryReader1 = null;
FileStream fileStream1 = null;
fileStream1 = new FileStream(filenames[0], FileMode.Open, FileAccess.Read, FileShare.None);
binaryReader1 = new BinaryReader(fileStream1);
ShpHeader newShpHeader1 = new ShpHeader();//定义header
newShpHeader1 = ShpFunction.ReadShpHeader(binaryReader1);
ShpFileBody newShpBody1 = new ShpFileBody();
FileStream fileStream2 = null;
BinaryWriter binaryWriter1 = null;
// 首先判断，文件是否已经存在
if (File.Exists(TargetFile))
{
File.Delete(TargetFile);// 如果文件已经存在，那么删除掉.
}
fileStream2 = new FileStream(TargetFile, FileMode.Create, FileAccess.Write, FileShare.None);
binaryWriter1 = new BinaryWriter(fileStream2);
//大端格式写入fileCode；
ShpFunction.WriteShpHeader(binaryWriter1, newShpHeader1);
//先将第一个文件的shpheader写入新文件中
while (binaryReader1.BaseStream.Position < binaryReader1.BaseStream.Length)
{
newShpBody1 = ShpFunction.ReadShpFileBody(binaryReader1);
ShpFunction.WriteShpBody(binaryWriter1, newShpBody1);
}
int k = newShpBody1.recordNo;//记录第一个文件记录的编号
//读入并写入第一个文件
BinaryReader binaryReader = null;
FileStream fileStream = null;
ShpHeader newShpHeader = new ShpHeader();//定义header
ShpFileBody newShpBody = new ShpFileBody();
for (int i = 1; i < filenames.Length; i++)
{
fileStream = new FileStream(filenames[i], FileMode.Open, FileAccess.Read, FileShare.None);
binaryReader = new BinaryReader(fileStream);
newShpHeader = ShpFunction.ReadShpHeader(binaryReader);
newShpHeader1 = ShpFunction.MergeShpHeader(newShpHeader, newShpHeader1);
//合并文件头
while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
{
newShpBody = ShpFunction.ReadShpFileBody(binaryReader);
newShpBody.recordNo = ++k;//通过循环将记录不断增加1
ShpFunction.WriteShpBody(binaryWriter1, newShpBody);
}
}//读取文件头和文件记录，将文件头合并，将文件记录读入
fileStream2.Position = 0;
ShpFunction.WriteShpHeader(binaryWriter1, newShpHeader1);
//后面的操作是将指针回到顶点，然后将合并后的shp头写入到新文件中
}
public static void MergeShp(String TextFileName, String TextFileName1, String TextFileName2)
{
BinaryReader binaryReader = null;
BinaryReader binaryReader1 = null;
FileStream fileStream = null;
FileStream fileStream1 = null;
try
{
fileStream = new FileStream(TextFileName, FileMode.Open, FileAccess.Read, FileShare.None);
binaryReader = new BinaryReader(fileStream);
ShpHeader newShpHeader = new ShpHeader();//定义header
newShpHeader = ShpFunction.ReadShpHeader(binaryReader);
ShpFileBody newShpBody = new ShpFileBody();
fileStream1 = new FileStream(TextFileName1, FileMode.Open, FileAccess.Read, FileShare.None);
binaryReader1 = new BinaryReader(fileStream1);
ShpHeader newShpHeader1 = new ShpHeader();//定义header
newShpHeader1 = ShpFunction.ReadShpHeader(binaryReader1);
ShpFileBody newShpBody1 = new ShpFileBody();
//写入新文件
FileStream fileStream2 = null;
BinaryWriter binaryWriter = null;
// 首先判断，文件是否已经存在
if (File.Exists(TextFileName2))
{
File.Delete(TextFileName2);// 如果文件已经存在，那么删除掉.
}
fileStream2 = new FileStream(TextFileName2, FileMode.Create, FileAccess.Write, FileShare.None);
binaryWriter = new BinaryWriter(fileStream2);
//大端格式写入fileCode；
newShpHeader = ShpFunction.MergeShpHeader(newShpHeader, newShpHeader1);
//合并文件头
ShpFunction.WriteShpHeader(binaryWriter, newShpHeader);
while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
{
newShpBody = ShpFunction.ReadShpFileBody(binaryReader);
ShpFunction.WriteShpBody(binaryWriter, newShpBody);
}
while (binaryReader1.BaseStream.Position < binaryReader1.BaseStream.Length)
{
newShpBody1 = ShpFunction.ReadShpFileBody(binaryReader1);
newShpBody1.recordNo = newShpBody1.recordNo + newShpBody.recordNo;
ShpFunction.WriteShpBody(binaryWriter, newShpBody1);
}
//大端格式读出记录编号，长度
ShpFunction.CloseReader(binaryReader, fileStream);
ShpFunction.CloseReader(binaryReader1, fileStream1);
ShpFunction.CloseWriter(binaryWriter, fileStream2);
}
catch (Exception ex)
{
Console.WriteLine("在读取文件的过程中，发生了异常！");
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
finally
{
if (fileStream != null)
{
try
{
fileStream.Close();
}
catch
{
// 最后关闭文件，无视关闭是否会发生错误了.
}
}
}
//合并逻辑
}