Filter决定了打开文件对话框、保存文件对话框中的扩展名支持。格式为：说明1|扩展名格式1|说明2|扩展名格式2|说明3|扩展名格式3比如：Word文档|*.doc再比如：Word文档|*.doc|Excel文档|*.xls现在想将Word文档一项多增加几个扩展名支持，用什么符号隔开呢？用英文分号。比如：Word文档...

一、打开文件StreammyStream=null;           OpenFileDialogopenFileDialog1=newOpenFileDialog();   ...

stringresultFile="";           OpenFileDialogopenFileDialog1=newOpenFileDialog();    ...

1.OpenFileDialog1privatevoidbtnOpen_Click(objectsender,EventArgse)2{3OpenFileDialogofd=newOpenFileDialog();4ofd.InitialDirectory=@"C:UsersLWP1398Desktop";//设置初始...