在現有文本的新行中添加一個新字符串

Question

我想打開一個文本，其中我已經鍵入了很多字符串，並且在所有行之後 我想創建一個新行並將信息寫入所有信息 關於新行，我想寫我把它從文本框

//button open file 
private void button4_Click(object sender, EventArgs e) 
    { 
     if(openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
     { 

      label7.Text = openFileDialog1.FileName; 
      textBox7.Text = File.ReadAllText(label7.Text); 
     } 
    } 


    //button save file 
    private void button5_Click(object sender, EventArgs e) 
    { 
     if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK) 
     { 

      File.WriteAllText(saveFileDialog1.FileName, textBox7.Text); 
     } 

    } 

     //this is the add button 
    private void button1_Click(object sender, EventArgs e) 
     { 

     string inValue1, inValue2, inValue3, inValue4, inValue5, inValue6; 
     inValue1 = textBox1.Text; 
     inValue2 = textBox2.Text; 
     inValue3 = textBox3.Text; 
     inValue4 = textBox4.Text; 
     inValue5 = textBox5.Text; 
     inValue6 = textBox6.Text; 


     string result = (inValue1 + "," + inValue2 + "," + inValue3 + "," 
      +inValue4+ "," +inValue5 + "," +inValue6); 
     //File.WriteAllText("C:\\text.txt", textBox1.Text); 
     System.IO.File.WriteAllText(@"C:\Users\v\Desktop\text.txt", result); 
    } 

Answer 1

這不是完全清楚你的意思，但我嫌疑你只是想File.AppendAllText：

File.AppendAllText(filename, "new line of text"); 

或者可能，如果此時文件不以換行符結束：

File.AppendAllText(filename, Environment.NewLine + "new line of text");