C#中实现简单文件读写(附源代码)

主要代码：

using System .IO;

// Read File

private void button1_Click(object sender, System.EventArgs e)

{

       try

       {

              openFileDialog1.Filter = "txt files (*.txt)|*.txt|xml files (*.xml)|*.xml|All files (*.*)|*.*" ;

              openFileDialog1.FilterIndex = 2 ;

              openFileDialog1.RestoreDirectory = true ;

 

              if (openFileDialog1.ShowDialog() == DialogResult.OK)

              {

                     string filename = openFileDialog1.FileName;

                     textBox1.Text = filename;

                     StreamReader fileReader = new StreamReader ( filename, System.Text.Encoding.Default );

                     textBox2.Text = fileReader.ReadToEnd();

                     fileReader.Close();

              }

       }

       catch

       {}

}

 

// Write File

private void button2_Click(object sender, System.EventArgs e)

{

       try

       {

              saveFileDialog1.Filter = "txt files (*.txt)|*.txt|xml files (*.xml)|*.xml|All files (*.*)|*.*" ;

              saveFileDialog1.FilterIndex = 1 ;

              saveFileDialog1.RestoreDirectory = true ;

              if (saveFileDialog1.ShowDialog() == DialogResult.OK)

              {

                     string filename = saveFileDialog.FileName;

StreamWriter fileWrite =

new StreamWriter( filename, false, System.Text.Encoding.Default );

                     fileWrite.Write(textBox2.Text);

                     fileWrite.Close();

              }

 

       }

       catch

       {}

}