CODEWITHSUNDEEP
c#wpfmethods
polygone321
polygone321

Reputation: 1

Save created .txt file via Savefiledialog in WPF

I have a method that returns a .txt file. As it is, it saves it in the debug folder of my project. I however aim to create a button that saves the .txt file to wherever the user wants it to be saved.

This is the method that creates the .txt file

public static void Createtxtfile(string file)
{
    string textPath = @"" + file + ".xml";
    int capacity = 1000000;
    int maxCapacity = 999999999;
    StringBuilder textfile = new StringBuilder(capacity, maxCapacity);
    InitializeProject(File.ReadAllText(textPath), textfile);
    CreateATextFile(textfile.ToString(), "textfile-" + file + ".txt");
}

This works great so far. CreateATextFile is a function that reads everything from textfile and dumps it into the debug folder, like so.

public static void CreateATextFile(object data, string fileName)
{
    var stream = new FileStream(fileName, FileMode.OpenOrCreate);
    using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8))
    {
        writer.Write(data);
        writer.Close();
    }
}

I would like to code a button that saves the textfile to a user specified location, but cannot figure out what would be the best course of action.

public void icon_dl_Click(object sender, RoutedEventArgs e)
{
    SaveFileDialog saveFileDialog = new SaveFileDialog();
    if (saveFileDialog.ShowDialog() == true)
        File.WriteAllText(saveFileDialog.FileName, textfile.ToString());
}

I understand why the textfile is not recognized in the button click method, as it is created in the Createtxtfile method. Is there a way to allow access to the same file despite the varying methods? I'm not looking to call upon the Createtxtfile method again when pressing the download button

EDIT :

The InitializeProject method initializes the stringbuilder. This is done out of functions that are being received via the .dll file attached

[DllImport("Textfunctions.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
public static extern void InitializeProject(
        string file,
        StringBuilder textfile,);

Upvotes: 0

Views: 165

Answers (1)

Guang
Guang

Reputation: 395

If I understand your description correctly, your problem is in icon_dl_Click(), the variable textfile is unknown?

If so, you can make the textfile a variable known to both Createtxtfile() as well as icon_dl_Click(). Which means in Createtxtfile(), instead of saying

StringBuilder textfile = new StringBuilder(capacity, maxCapacity);

you should declare StringBuilder textfile outside of it, such as a class member variable. So in Createtxtfile() you say

this.textfile = new StringBuilder(capacity, maxCapacity);

and in icon_dl_Click() you say

File.WriteAllText(saveFileDialog.FileName, this.textfile.ToString());

Assuming these two methods are in the same class. Of course, then you don't really need "this.", just "textfile".

Does this answer your question?

Upvotes: 1

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