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Oct 9th, 2006

Writing text from textbox to file...

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So I'm working on a program where you fill in some textboxes and press a button to generate a .txt file with the texts in it...

I'm working in Visual Studio Express (C++)

The only thing i have so far is:

(Toggle Plain Text)

private: System::Void btnAdd_Click(System::Object^ sender, System::EventArgs^ e)
{
char text1[20]
 
fstream file_op("C:\\Textol.txt", ios::out); 
file_op<<text1;
file_op.close();

and i included

(Toggle Plain Text)

#include<fstream>
#include<conio.h>
#include<stdio.h>
 
// and added to namespaces 
 
usingnamespace std;

The textboxes are auto generated etc...

The problem is How to I write the text from the textboxes into my file.. i cant add them like this:

C++ Syntax (Toggle Plain Text)

 
file_op<<txt1->Text;

I have to get some kind of way to save the string texts to a varable.. but how..

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DmD

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Oct 9th, 2006

Re: Writing text from textbox to file...

You know the ID of each text box, right? And you have the HWND of the dialog box that contains the edit controls, right? Then use GetWindowText() for each box

C++ Syntax (Toggle Plain Text)
char text[255]; // or however long the strings are
// hWnd is the HWND of the dialog box
HWND hEditWnd = GetDlgItem(hWnd,IDC_EDIT1);
// get 1st text box
GetWindowText(hEditWnd, text);
char text[255]; // or however long the strings are
// hWnd is the HWND of the dialog box
HWND hEditWnd = GetDlgItem(hWnd,IDC_EDIT1);
// get 1st text box
GetWindowText(hEditWnd, text);

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Oct 9th, 2006

Re: Writing text from textbox to file...

Since it appears you are using managed (.NET) code, why not use the .NET classes for file IO? I'm no expert at C++/CLI but it might be as simple as:

C++ Syntax (Toggle Plain Text)
System::IO::StreamWriter^ sw = gcnew StreamWriter("file.txt");
sw->WriteLine(txt1->Text);
System::IO::StreamWriter^ sw = gcnew StreamWriter("file.txt");
sw->WriteLine(txt1->Text);

GloriousEremite

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Oct 10th, 2006

Re: Writing text from textbox to file...

Click to Expand / Collapse Quote originally posted by GloriousEremite ...

Since it appears you are using managed (.NET) code, why not use the .NET classes for file IO? I'm no expert at C++/CLI but it might be as simple as:
C++ Syntax (Toggle Plain Text)
System::IO::StreamWriter^ sw = gcnew StreamWriter("file.txt");
sw->WriteLine(txt1->Text);
System::IO::StreamWriter^ sw = gcnew StreamWriter("file.txt"); sw->WriteLine(txt1->Text);

Thanks allot that really helped :cheesy: :cheesy:

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Oct 10th, 2006

Re: Writing text from textbox to file...

OK so thanks for your help, onto the next problem!! :cheesy:

now that i wrote the text to the .txt file I want it (when the form loads) to read the text and display it in the textboxes....

what i got is this:

(Toggle Plain Text)

private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e)
{
System::IO::StreamReader^ sr=gcnew StreamReader("C:\\Textol.txt");
sr->ReadLine();
sr->Close();
}

I'm jsut asking myself do I transfer the text in one action, or do i have to save it to a variable... (I don't have any idea where the text goes when I use sr->Readline(); )

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Oct 10th, 2006

Re: Writing text from textbox to file...

That's because it doesn't go anywhere

Try this:

C++ Syntax (Toggle Plain Text)
 private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e)
{
System::IO::StreamReader^ sr=gcnew StreamReader("C:\\Textol.txt");
Txt1->Text = sr->ReadLine();
sr->Close();
}
 private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e)
{
System::IO::StreamReader^ sr=gcnew StreamReader("C:\\Textol.txt");
Txt1->Text = sr->ReadLine();
sr->Close();
}

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Oct 12th, 2006

Re: Writing text from textbox to file...

Thanks again that really helped, i guess im not that good yet at logical thinking *YET*

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Oct 12th, 2006

Re: Writing text from textbox to file...

Practice makes perfect ;-)

Last edited by Nick Evan; Mar 26th, 2010 at 9:40 am.

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