C# - 将.txt文件读入TextBox

Question

我试图使用以下代码将.txt文件读入多行文本框.我已经让文件对话框按钮完美地工作,但我不知道如何将实际文本从文件框中获取到文本框中.这是我的代码.你能帮我吗？

private void button_LoadSource_Click(object sender, EventArgs e)
    {
        Stream myStream = null;
        OpenFileDialog openFileDialog1 = new OpenFileDialog();

        openFileDialog1.InitialDirectory = "c:\\";
        openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
        openFileDialog1.FilterIndex = 2;
        openFileDialog1.RestoreDirectory = true;

        if (openFileDialog1.ShowDialog() == DialogResult.OK)
        {
            try
            {
                if ((myStream = openFileDialog1.OpenFile()) != null)
                {
                    using (myStream)
                    {
                        // Insert code to read the stream here.
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);
            }
        }
    }

Answer 1

如果您只需要完整的文本,则应使用该函数File.ReadAllText- 将其传递给dialoge(openFileDialog1.FileName)中选择的FileName/Path .

要将内容加载到文本框中,您可以编写:

 textbox1.Text = File.ReadAllText(openFileDialog1.FileName);

打开和使用流有点复杂,因为你应该查看using语句