IsolatedStorageFileStream类独立存储文件

最新推荐文章于 2020-06-08 21:22:57 发布

转载最新推荐文章于 2020-06-08 21:22:57 发布 · 1.1k 阅读

文章标签：

#存储 #system #exception #button #object #forms

本文介绍如何使用C#进行文件的读写操作，包括从本地读取TXT文件到RichTextBox控件中显示，以及将RichTextBox中的内容保存到应用程序的隔离存储中。

using namespace System::IO;
using namespace System::IO::IsolatedStorage;

     //读取txt文件
   private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
               if(this->openFileDialog1->ShowDialog() != System::Windows::Forms::DialogResult::OK)
                   return;
               String^ txtFileName = this->openFileDialog1->FileName;
               if(!File::Exists(txtFileName))
                   return;

               this->richTextBox1->LoadFile(txtFileName, RichTextBoxStreamType::PlainText);
           }

           //保存独立存储文件
   private: System::Void button2_Click(System::Object^ sender, System::EventArgs^ e) {
               if(this->richTextBox1->Text->Length < 1)
                   return;
               try{
                   IsolatedStorageFileStream^ MyFile = gcnew IsolatedStorageFileStream("sunbin", FileMode::Create);
                   StreamWriter^ MyWriter = gcnew StreamWriter(MyFile);
                   MyWriter->Write(this->richTextBox1->Text);
                   MyWriter->Flush();
                   MyWriter->Close();
                   MyFile->Close();
                   this->richTextBox1->Text = "";
                      MessageBox::Show("独立文件已经保存成功", "", MessageBoxButtons::OK, MessageBoxIcon::Information);
               }
               catch(Exception^ eee){
                   MessageBox::Show(eee->Message, "", MessageBoxButtons::OK,MessageBoxIcon::Information);
               }
           }

           //读取独立存储文件
private: System::Void button3_Click(System::Object^ sender, System::EventArgs^ e) {
           try{
               //IsolatedStorageFileStream^ MyFile = gcnew IsolatedStorageFileStream("temp123.cfg", FileMode::Open);
               //StreamReader^ MyReader = gcnew StreamReader(MyFile);
               //this->richTextBox1->Text = MyReader->ReadToEnd();
               //MyReader->Close();
               //MyFile->Close();
               IsolatedStorageFileStream^ MyFile =gcnew IsolatedStorageFileStream("sunbin",FileMode::Open);
               StreamReader^ MyReader=gcnew StreamReader(MyFile);
               this->richTextBox1->Text=MyReader->ReadToEnd();
               MyReader->Close();
               MyFile->Close();
           }
           catch(Exception^ eee){
               MessageBox::Show(eee->Message, "", MessageBoxButtons::OK, MessageBoxIcon::Information);
           }
       }