if (!File.Exists("D:\\TestTxt.txt"))
{
FileStream fs1 = new FileStream("D:\\TestTxt.txt", FileMode.Create, FileAccess.Write);//创建写入文件
StreamWriter sw = new StreamWriter(fs1);
sw.WriteLine(this.textBox3.Text.Trim() + "+" + this.textBox4.Text);//开始写入值
sw.Close();
fs1.Close();
}
else
{
FileStream fs = new FileStream("D:\\TestTxt.txt", FileMode.Open, FileAccess.Write);
StreamWriter sr = new StreamWriter(fs);
sr.WriteLine("Hello");//开始写入值
sr.Close();
fs.Close();
}
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