c# winform 直接選取和檔案讀寫

標籤：winform   folderbrowserdialog   openfiledialog   file   

//讀檔案        private void readBtn_Click(object sender, EventArgs e)        {            try             {                if (pathTxt.Text == "")                {                    MessageBox.Show("請輸入檔案地址");                    return;                }                readTxt.Text = File.ReadAllText(pathTxt.Text, Encoding.Default);//不需要對地址中的"\"進行轉義            }            catch (Exception ex)            {                MessageBox.Show("檔案地址錯誤");            }                               }        //寫檔案        private void writeBtn_Click(object sender, EventArgs e)        {            try            {                if (pathTxt.Text == "")                {                    MessageBox.Show("請輸入檔案地址");                    return;                }                File.WriteAllText(pathTxt.Text, writeTxt.Text);                MessageBox.Show("success");            }            catch (Exception ex)            {                MessageBox.Show("檔案地址錯誤");            }        }        //讀取檔案夾路徑        private void folderBtn_Click(object sender, EventArgs e)        {            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)            {                folderTxt.Text = folderBrowserDialog1.SelectedPath;            }        }        //讀取檔案路徑        private void fileBtn_Click(object sender, EventArgs e)        {                        OpenFileDialog op = new OpenFileDialog();            op.Filter = "Text files (*.txt)|*.txt|All Files(*.*)|*.*";            if (op.ShowDialog() == DialogResult.OK)            {                pathTxt.Text = op.FileName;            }        }