[英]How can I check the file I created already in the disk using savefileDialog in c# form?
是的,我知道这个问题已经存在,但他们似乎都没有回答我正在寻找的内容,大多数建议尝试 if (!Directory.Exists(path)),但此语句仅检查目录是否存在,并且不会如果它确实存在,则什么都没有。 但我的目标是在使用 savefileDialog 获取文件夹名称后,如果文件夹名称已存在,我想显示一个对话框以显示文件夹已存在,您想重写这样的文件吗?
private void saveToXML_Click(object sender, EventArgs e) {
try
{
//Here we create a directory and including all the xml files in that directory
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
//Combining my path so its pointing at the correct directory
string path = System.IO.Path.Combine(Environment.CurrentDirectory, saveFileDialog1.FileName);
if (!Directory.Exists(path))
{
//Initialzing where we want to create directory
Directory.CreateDirectory(path);
//Now we are seriazling all the List instances to an XML file and storing all the XML file in the user created directory
using (Stream stream = new FileStream(path + "\\TARA_Assumptions.XML", FileMode.Create, FileAccess.Write, FileShare.None))
{
XmlSerializer serializer = new XmlSerializer(typeof(List<Introduction>));
serializer.Serialize(stream, AssumptionInstances);
stream.Close();
}
MessageBox.Show("Saved Assumptions OBJ to XML");
像下面这样:
if (Directory.Exists(path))
{
MessageBox.Show("Directory already exists: '" + path + "'!");
}
这应该检查文件是否存在,而不是目录(确保包含扩展名):
if(System.IO.File.Exists(path))
{
SomeFunction();
}
'SomeFunction' 应该表示一个文件存在,你想覆盖等。
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