我已經創建了一個程序,它能夠通過datagridview修改.exe.config文件(應用程序配置)的內容,其中鍵值對顯示在datagridview的。問題是,我有一個保存設置,它用用戶輸入的新值替換舊值。它會保存,下次我打開它時,文件將被覆蓋,但當我嘗試加載配置文件以更新用戶設置已更改爲的時候,我得到'另一個進程使用的文件'錯誤。如何解決'另一個進程正在使用文件'錯誤
這是代碼:
private XmlDocument m_XmlDoc;
private FileStream fIn;
private StreamReader sr;
private StreamWriter sw;
private OrderedDictionary m_Settings;
private void ProgramConfig_Load(object sender, EventArgs e)
{
try
{
loadconfigfile(GatewayConfiguration.Properties.Settings.Default.Config);
BindingList<KeyValueType> list = new BindingList<KeyValueType>();
for (index = 0; index < m_Settings.Count; index++)
{
list.Add(new KeyValueType(keys[index], values[index].ToString()));
}
var source = new BindingSource();
source.DataSource = list;
dataGridView1.DataSource = source;
}
catch (Exception ex)
{
textBox1.Text = ex.Message;
}
}
public void loadconfigfile(string configfile)
{
if (File.Exists(configfile))
{
m_XmlDoc = new XmlDocument();
GatewayConfiguration.Properties.Settings.Default.Config = configfile;
GatewayConfiguration.Properties.Settings.Default.Save();
// Error Occurs here at the fIn, telling me that the file is currently in use and cannot be accessed.
fIn = new FileStream(configfile, FileMode.Open, FileAccess.ReadWrite);
sr = new StreamReader(fIn);
sw = new StreamWriter(fIn);
try
{
m_XmlDoc.LoadXml(sr.ReadToEnd());
loadAppSettings();
}
catch (Exception ex)
{
throw ex;
}
}
else
{
throw new FileNotFoundException(configfile + " does not exist.");
}
}
private void loadAppSettings()
{
m_Settings = new OrderedDictionary();
XmlNodeList nl = m_XmlDoc.GetElementsByTagName("setting");
foreach (XmlNode node in nl)
{
try
{
m_Settings.Add(node.Attributes["name"].Value, node.ChildNodes[0].InnerText);
}
catch (Exception)
{
}
}
}
private void SaveAppSettings_Click(object sender, EventArgs e)
{
// saves
MessageBoxButtons buttons = MessageBoxButtons.YesNo;
DialogResult result = MessageBox.Show("Overwrite the old values with the new values?", "Save Settings?", buttons);
if (result == DialogResult.No)
{
return;
}
int index = 0;
string[] keys = new string[m_Settings.Keys.Count];
m_Settings.Keys.CopyTo(keys, 0);
for (index = 0; index < dataGridView1.Rows.Count; index++)
{
if ((string)dataGridView1[2, index].Value != string.Empty)
{
setAppSetting(keys[index], (string)dataGridView1[2, index].Value);
}
}
// Updates datagrid by loading configfile again
loadconfigfile(GatewayConfiguration.Properties.Settings.Default.Config);
textBox1.Text = "Settings Saved. You may now exit.";
m_savecounter++;
dataGridView1.Update();
dataGridView1.Refresh();
}
在下SaveAppSettings的loadconfigfile功能會出現錯誤。它告訴我它不能訪問該文件,因爲該文件被另一個進程使用。在我可以再次打開文件並將其顯示給用戶之前,我需要做些什麼?
非常感謝,
Tf.rz
可能出現[正在被另一個進程使用的文件的重複。原因和解決方案?](http://stackoverflow.com/questions/2861713/file-being-used-by-another-process-reason-and-solution) –