c#打开txt文件并导入到textbox中

            OpenFileDialog openFileDialog = new OpenFileDialog();

            openFileDialog.Title = " 请选择您要导入的模板文件：";

            openFileDialog.Filter = "TextDocument(*.txt)|*.txt|TextDocument(*.ini)|*.ini";

            openFileDialog.ShowDialog();

            if (openFileDialog.FileName != "")//判断文件名是否为空

            {

                StreamReader streamReader = new StreamReader(openFileDialog.FileName, Encoding.Default);

                this.txtextBox.Text = streamReader.ReadToEnd();

            }