嘿,这里有点麻烦。当窗体退出时关闭流式读取和流式编写器
所以我有一个加载按钮,加载文件,并保存按钮保存文件。我也有一个关闭程序的退出按钮。我需要帮助的是关闭程序时,我不会检查是否有任何StreamReader或StreamWriter没有关闭的东西。
继承人是我到目前为止有: 在顶部,我declear这些家伙
bool isDirtyBoolean = false;
string moreData = "";
我Load按钮看起来像这样
private void loadToolStripMenuItem_Click(object sender, EventArgs e)
{
//begin in the project folder
openFileDialog1.InitialDirectory = Directory.GetCurrentDirectory();
//display the file open dialog box
DialogResult responseDialogResult;
responseDialogResult = openFileDialog1.ShowDialog();
if (responseDialogResult != DialogResult.Cancel)
{ //check that user did not click the cancel button
//create a streamreader object for the selected file,
//read the file contents,
//and display each line of the file in the list box
StreamReader nameStreamReader = new StreamReader(openFileDialog1.FileName);
while (nameStreamReader.Peek() != -1)
{
freindsDataListBox.Items.Add(nameStreamReader.ReadLine());
}
nameStreamReader.Close();
isDirtyBoolean = true;
}
}
我的保存按钮看起来像这样
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
//begin in the project folder
saveFileDialog1.InitialDirectory = Directory.GetCurrentDirectory();
//display the file save dialog
DialogResult responseDialogResult;
responseDialogResult = saveFileDialog1.ShowDialog();
if (responseDialogResult != DialogResult.Cancel)
{ //check that user did not click the cancel button
//create a streamWriter object and
//then write out the list box items to the file
StreamWriter nameStreamWriter = new StreamWriter(saveFileDialog1.FileName);
int count = freindsDataListBox.Items.Count;
for (int i = 0; i < count; i++)
{
nameStreamWriter.WriteLine(freindsDataListBox.Items[i]);
}
nameStreamWriter.Close();
isDirtyBoolean = true;
freindsDataListBox.Items.Clear();
}
}
我的退出按钮看起来像这样
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
if (isDirtyBoolean == false)
nameStreamReader.Close();
nameStreamWriter.Close();
this.Close();
}
我试图做的是设置布尔isDirtyBoolean顶部,然后当流读取器或写入器关闭,将布尔值设置为true,所以当我退出应用程序,如果它仍然设置为false,无论如何它关闭它们。
但是这不工作,因为isDirtyBoolean值是那些私人无效按钮,我不能去他们。
我的任务它说退出按钮需要再次检查流是否关闭或不 – 2010-10-09 22:06:27