Question

我想打开一个文本，我已经输入了许多字符串，并且在所有行之后我想创建一个新行并在信息中写入信息关于我要编写的新行我从文本框中取出

//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

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

或者，如果文件目前没有以换行符结束：

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

在现有文本的新行中添加新字符串

1 个答案: