c++ cli saving file, and opening the same

Question

0.00/5 (No votes)

See more:

.NET3.5

, +

Hello, i have one project which i made, but i need some help about saving and oppening file..

I have two ListView controls on form.When i click button-save it will save items and subitems from listview to file which have extendion .nk, it's simple .txt file but with .nk extendion.
Here is code for save button:

this text: >!< split string array.

C++

private: void save_project(){
			 String^ clas_name = class_name_lbl->Text->ToString();
			 int n,m;
			 n = listView1->Items->Count;
			 m = listView2->Items->Count;

			 String^ ime_fajla = class_name_lbl->Text + "_project";
			 try
			 {
				 saveFileDialog4->FileName = ime_fajla;
				 if(saveFileDialog4->ShowDialog() == System::Windows::Forms::DialogResult::OK)
				 {
					 ime_fajla = saveFileDialog4->FileName;	
				 }
				 StreamWriter^ sw = gcnew StreamWriter(ime_fajla);
				 //lv1
				 sw->Flush();
				 for(int i=0; i<n ; i++)
				 {
					 sw->WriteLine(listView1->Items[i]->Text + ">!<" + listView1->Items[i]->SubItems[1]->Text + ">!<" + listView1->Items[i]->SubItems[2]->Text);
				 }
				 sw->WriteLine("+++++");			
				 //lv2
				 for(int i=0; i<m; i++)
				 { 
					 String^ s1;
					 String^ s2;
					 if(listView2->Items[i]->SubItems[2]->Text == "" || listView2->Items[i]->SubItems[4]->Text == "")
					 {
						 s1 = listView2->Items[i]->SubItems[2]->Text + "#";
						 s2 = listView2->Items[i]->SubItems[4]->Text + "#";
						 sw->WriteLine(listView2->Items[i]->Text + ">!<" + listView2->Items[i]->SubItems[1]->Text + ">!<"
						 + s1  + ">!<" + listView2->Items[i]->SubItems[3]->Text  + ">!<" 
						 + s2);
					 }
					 if(listView2->Items[i]->SubItems[2]->Text != "" || listView2->Items[i]->SubItems[4]->Text != "")
					 {
						 sw->WriteLine(listView2->Items[i]->Text + ">!<" + listView2->Items[i]->SubItems[1]->Text + ">!<"
							 + listView2->Items[i]->SubItems[2]->Text  + ">!<" + listView2->Items[i]->SubItems[3]->Text  + ">!<" 
							 + listView2->Items[i]->SubItems[4]->Text);
					 }
				 }
				 sw->WriteLine("-----");
				 //class name
				 sw->WriteLine(clas_name);
				 
				 sw->Flush();
				 sw->Close();
				 delete sw;
			 }
			 catch(Exception^ ex)
			 {
				 MessageBox::Show(ex->Message);
			 }
		 }

Here is a code for open project file:

C++

private: void open_project(){
			 //delitelj
			 array<String^>^ delitelj = {">!<"};
			 //podaci za lv1
			 array<String^>^ podaci_lv1;
			 //podaci za lv2
			 array<String^>^ podaci_lv2;
			 //string u koji se ubacuju podaci za lv1
			 String^ lv1_text;
			 //string u koji se ubacuju podaci za lv2
			 String^ lv2_text;
			 //brojaci i,j
			 int i = 0;
			 int j = 0;
			 //ime fajla koji ucitavamo
			 String^ ime_fajla = "";
			 try
			 {
				 if(openFileDialog1->ShowDialog() == System::Windows::Forms::DialogResult::OK)
				 {
					 ime_fajla = openFileDialog1->FileName;
				 }

				 StreamReader^ sr = gcnew StreamReader(ime_fajla);
				 //lv1
				 do{
					 lv1_text = sr->ReadLine();
					 array<String^>^ podaci_lv1 = lv1_text->Split(delitelj,3,StringSplitOptions::RemoveEmptyEntries);
					 listView1->Items->Add(podaci_lv1[0]);
					 listView1->Items[i]->SubItems->Add(podaci_lv1[1]);
					 listView1->Items[i]->SubItems->Add(podaci_lv1[2]);
					 i++;
				 }while(sr->ReadLine() != "+++++");
				 //lv2
				 do{
					 if(sr->ReadLine() == "+++++");
					 {



						 lv2_text = sr->ReadLine();
						 array<String^>^ podaci_lv2 = lv2_text->Split(delitelj,5,StringSplitOptions::RemoveEmptyEntries);
						 listView2->Items->Add(podaci_lv2[0]);
						 listView2->Items[j]->SubItems->Add(podaci_lv2[1]);
						 listView2->Items[j]->SubItems->Add(podaci_lv2[2]);
						 listView2->Items[j]->SubItems->Add(podaci_lv2[3]);
						 listView2->Items[j]->SubItems->Add(podaci_lv2[4]);
						 j++;
					 }
				 }while(sr->ReadLine() != "-----");
				 //class name
				 do{
					 if(sr->ReadLine() == "-----")
						class_name_lbl->Text = sr->ReadLine();
				 }while(!sr->EndOfStream);

				 sr->Close();
				 delete sr;
			 }
			 catch(Exception^ ex)
			 {
				 MessageBox::Show(ex->Message);
			 }

		 }

Here is a picture when i enter data in listview controls:
http://i39.tinypic.com/34i2r9s.jpg
Here is a picture when i save file, and how it looks when i open it in Notepad++:
http://i42.tinypic.com/1jql4k.jpg
Here is a picture when i OPEN file in my project software:
http://i39.tinypic.com/2dl2lqd.jpg

If someone know what is the problem and know how to fix it please help me, i will be most grateful..
If you have some links of similar projects and codes post it please.. Thanks!

Posted 18-May-13 7:30am

User 9767265

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Steve44 · Accepted Answer · 2013-05-18T08:16:00

Solution 1

Unfortunately I can not see your pictures, but I see some general problem in your parsing code:

C++

//lv1
do{
    lv1_text = sr->ReadLine();
    ...
}while(sr->ReadLine() != "+++++");

Every iteration of the loop reads two lines. The condition in the while always consumes an additional line from your file. If it is not "+++++", the line is still "gone" and the next iteration of the loop will read the following line. In general, every 2nd entry in your file is consumed by the condition check.

A possibility to change your code would be to do this:

C++

//lv1
do{
    lv1_text = sr->ReadLine();
    if(lv1_text == "+++++") { break; }
    ...
}while( true );

This way every line in the file is read inside the loop once and no lines are skipped as before.

The other loops can be fixed in the same way, they also "consume" lines for the loop condition checks.

Posted 18-May-13 8:16am

Steve44

Updated 18-May-13 8:18am

v2

Comments

[no name] 20-May-13 7:25am

Thanks for the respondes i will try this today and i will tell you, i now get it in my head.. Thanks again..

[no name] 20-May-13 9:38am

Okay i solved for listView1, but there is still problem with listView2, it says this exception in messagebox: Index was outside the bounds of the array? Can you help me with ListView2?

I changed this code:
//lv2
do{
if(sr->ReadLine() == "+++++");
{

lv2_text = sr->ReadLine();
array<string^>^ podaci_lv2 = lv2_text->Split(delitelj,5,StringSplitOptions::RemoveEmptyEntries);
listView2->Items->Add(podaci_lv2[0]);
listView2->Items[j]->SubItems->Add(podaci_lv2[1]);
listView2->Items[j]->SubItems->Add(podaci_lv2[2]);
listView2->Items[j]->SubItems->Add(podaci_lv2[3]);
listView2->Items[j]->SubItems->Add(podaci_lv2[4]);
j++;
}
}while(sr->ReadLine() != "-----");

TO:
//lv2
do{
lv2_text = sr->ReadLine();
if(lv2_text == "-----")
{
break;
}
else
{
array<string^>^ podaci_lv2 = lv2_text->Split(delitelj,5,StringSplitOptions::RemoveEmptyEntries);
listView2->Items->Add(podaci_lv2[0]);
listView2->Items[j]->SubItems->Add(podaci_lv2[1]);
listView2->Items[j]->SubItems->Add(podaci_lv2[2]);
listView2->Items[j]->SubItems->Add(podaci_lv2[3]);
listView2->Items[j]->SubItems->Add(podaci_lv2[4]);
j++;
}
}while(true);

[no name] 20-May-13 9:38am

Thanks!