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Reading txt file to textbox

Reading txt file to textbox

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Dumpen	21 Mar, 2008 - 08:00 PM Post #1
New D.I.C Head Joined: 21 Mar, 2008 Posts: 40	Hello. I am developing a program where I have some textboxes and forward and previous buttons. I also have a txt file. I want to read from my txt file and then write to my textbox. My txt file looks like this: CODE 19 1 "Yeti" 30 900 0 105 110 37 0 150 37 2 17 4 6 400 2000 10 2 180 14 6 0 0 3 0 0 20 1 "Elite Yeti" 36 1200 0 120 125 50 0 180 43 3 0 1 6 400 1400 10 2 180 14 6 0 1 4 1 1 21 1 "Assassin" 26 800 0 95 100 33 0 130 33 2 0 1 7 400 2000 10 2 180 14 6 0 0 0 0 0 22 1 "Ice Monster" 22 650 0 80 85 27 0 110 27 2 7 1 5 400 2000 10 2 170 14 6 0 0 3 0 0 23 1 "Hommerd" 24 700 0 85 90 29 0 120 29 3 0 1 5 400 1600 10 2 170 14 6 0 0 3 0 0 24 1 "Worm" 20 600 0 75 80 25 0 100 25 3 0 1 4 400 1600 10 2 160 14 6 0 0 2 0 0 25 1 "Ice Queen" 52 4000 0 155 165 90 0 260 76 3 11 4 7 400 1400 50 2 180 14 3 0 4 5 4 4 I want it to read one line and then for example set Yeti and 19 into a textbox When you push forward it reads elite yeti and 20 But I don't know how to do I am assuming I need space as a separator and then use like var[3] where 3 is the third word. A little like in mirc where you can write $gettok(one two three, 32, 3) where it picks the 3 word with the separator space (32) But when it gets to the code and not the idea im kinda stuck. Any ideas? Im using Visual C# 2008 Express Edition
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Martyr2

RE: Reading Txt File To Textbox
21 Mar, 2008 - 08:40 PM

Post #2

Programming Theoretician

Joined: 18 Apr, 2007
Posts: 5,660

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Thanked: 314 times
Expert In: C/C++, Java, VB, VB.NET, C#, PHP, Web Development, HTML & CSS, Javascript

My Contributions

Well one way to do this is to load up all the lines into an array of some sort. I used an arraylist in the example below. Then create a display function which uses a pointer variable to point at each string, split it, then put the pieces into the textboxes. You would use the next and previous buttons to control the pointer variable and to refresh the boxes.

It is crude but effective and the only bug in it is that your create names that have a space in them are also split so the name "ice monster" would appear in the textbox as "ice

That will be your homework to work on. Once you get it, problem solved.

csharp


// Arraylist to hold all lines of the file.
        ArrayList lines = new ArrayList(100);

        // Pointer variable to point to active record
        int curRec = 0;

        private void Form1_Load(object sender, EventArgs e)
        {
            // Open the data file
            StreamReader f = new StreamReader(new FileStream("c:\\data.txt", FileMode.Open));

            String curLine;

            // Read in the data line by line and add it to our ArrayList
            while ((curLine = f.ReadLine()) != null) {
                lines.Add(curLine);
            }

            // Close
            f.Close();

            // Display first line
            displayLine(curRec);
        }

        // Displays the line in the arraylist
        private void displayLine(int linenumber)
        {
            // If the line number is in the range of total values
            if ((linenumber >= 0) && (linenumber < lines.Count)) {

                // Get the string out of the arraylist
                String line = (String)lines[linenumber];

                // Split it into various pieces on the space
                String[] pieces = line.Split();

                // Populate the text boxes with the appropriate pieces
                txtID.Text = pieces[0];
                txtName.Text = pieces[2];
            }

        }

        // Moves the pointer variable back one and displays the value
        private void btnPrevious_Click(object sender, EventArgs e)
        {
            if (curRec > 0) {
                curRec -= 1;
                displayLine(curRec);
            }
        }

        // Moves the pointer variable up one and displays the value
        private void btnNext_Click(object sender, EventArgs e)
        {
            if (curRec < lines.Count - 1) {
                curRec += 1;
                displayLine(curRec);
            }
        }

Read the in code comments to see how I am doing this. If you want to rip out the splitting of the line and do something with the line read in, feel free. It is up to you as to how you want to handle the line once you read it in.

This is only a quick example. Enjoy!

"At DIC we be splitting creature names since the beginning of the millennium... that and code ninjas!"

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Dumpen	RE: Reading Txt File To Textbox 22 Mar, 2008 - 06:38 AM Post #3
New D.I.C Head Joined: 21 Mar, 2008 Posts: 40	It might be a quick example, but it works like a charm I only have one question now I got the button back to be disabled when there are nothing to go back to with: CODE if (curRec == 1) { prev_monster_button.Enabled = false; } And then in the next button code I am enabling in it again: CODE if (curRec < lines.Count - 1) { curRec += 1; displayLine(curRec); prev_monster_button.Enabled = true; } But how do I do it so it will disable my next button like my previous? If there is no content for the next button it should be disabled Im kinda confused there
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Martyr2	RE: Reading Txt File To Textbox 22 Mar, 2008 - 06:51 AM Post #4
Programming Theoretician Joined: 18 Apr, 2007 Posts: 5,660 Thanked: 314 times Expert In: C/C++, Java, VB, VB.NET, C#, PHP, Web Development, HTML & CSS, Javascript My Contributions	Just check if curRec is equal to the arraylist count. You see how in the next button you check if curRec is less than arraylist count? Well after you hit the last record and increment curRec, it will equal arraylist count and hence make that if statement false and won't let you go to the next record right? At that time you would disable the next button.
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Dumpen	RE: Reading Txt File To Textbox 22 Mar, 2008 - 07:17 AM Post #5
New D.I.C Head Joined: 21 Mar, 2008 Posts: 40	QUOTE(Martyr2 @ 22 Mar, 2008 - 07:51 AM) Just check if curRec is equal to the arraylist count. You see how in the next button you check if curRec is less than arraylist count? Well after you hit the last record and increment curRec, it will equal arraylist count and hence make that if statement false and won't let you go to the next record right? At that time you would disable the next button. You are my hero! CODE if (curRec == lines.Count -1) { next_monster_button.Enabled = false; } Success EDIT: Just read my rank Would be fun if the site was named something with a K in the end This post has been edited by Dumpen: 22 Mar, 2008 - 07:36 AM
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Dumpen	RE: Reading Txt File To Textbox 22 Mar, 2008 - 07:54 AM Post #6
New D.I.C Head Joined: 21 Mar, 2008 Posts: 40	I have created a way so it takes ice monster But is it a good way and how do I combine the string that I marked with a bold with a space between so it is Monster Name and not MonsterName? CODE // My string to split [b]string str = pieces[2] + pieces[3];[/b] // Split seperator char[] seps = {' '}; // Split the string into parts. string[] parts = str.Split(seps); for (int i = 0; i < parts.Length; i++) monster_name_textbox.Text = parts[i].Replace("\"", "");; Im guessing it should be something like: string str = pieces[2] + " " + pieces[3]; but cant seem to get it to wkr This post has been edited by Dumpen: 22 Mar, 2008 - 07:55 AM
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Martyr2	RE: Reading Txt File To Textbox 22 Mar, 2008 - 08:07 AM Post #7
Programming Theoretician Joined: 18 Apr, 2007 Posts: 5,660 Thanked: 314 times Expert In: C/C++, Java, VB, VB.NET, C#, PHP, Web Development, HTML & CSS, Javascript My Contributions	QUOTE You are my hero! Dream.In.Code... where the code heroes hang out. We are like the justice league of code. PsychoCoder is the Flash, NickDMax is Firestorm, Nykc is black lightning, no2pencil is Red tornado, letthecolorsrumble is the Green Latern, benigndesign is Black Canary, supersweety is wonder woman, supersloth is superman and I... I am batman! Now skyhawk... while he might be on par with Professor xavier of sorts, he doesn't have the ability to kill men. He is a lady killer instead. TOGETHER, WE FORM THE DIC JUSTICE LEAGUE! We fight for justice, to protect newbies, and spread code of hope to all those who seek it. QUOTE(Dumpen @ 22 Mar, 2008 - 08:54 AM) I have created a way so it takes ice monster But is it a good way and how do I combine the string that I marked with a bold with a space between so it is Monster Name and not MonsterName? CODE // My string to split [b]string str = pieces[2] + pieces[3];[/b] // Split seperator char[] seps = {' '}; // Split the string into parts. string[] parts = str.Split(seps); for (int i = 0; i < parts.Length; i++) monster_name_textbox.Text = parts[i].Replace("\"", "");; Im guessing it should be something like: string str = pieces[2] + " " + pieces[3]; but cant seem to get it to wkr Well if you simply deleted the space in the name, it will be read in as a whole string there. You might want to consider replacing the space with a special character like an underscore and simply read in the name and replace the underscore with the space. It is up to you and your design as to how you want to do that. This post has been edited by Martyr2: 22 Mar, 2008 - 08:03 AM
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Dumpen	RE: Reading Txt File To Textbox 22 Mar, 2008 - 04:20 PM Post #8
New D.I.C Head Joined: 21 Mar, 2008 Posts: 40	I have been ripping my hair out because I cant find a solution. I got it all working, but now I must format more text I got a new text that has sections like this: CODE 1 0 33 10 85 162 95 168 -1 5 //Bull Fighter 1 29 30 40 113 45 116 -1 3 //Hound 2 41 5 126 160 125 161 -1 2 //Budge Dragon 3 38 5 106 161 111 160 -1 2 //Spider 4 38 5 106 161 111 160 -1 2 //Elite Bull Fighter 6 38 5 106 161 111 160 -1 2 //Lich 7 38 5 106 161 111 160 -1 2 //Giant 14 38 5 106 161 111 160 -1 2 //Skeleton Warrior end 0 275 33 10 85 162 95 168 -1 5 //Test 1 Section 2 275 29 30 40 113 45 116 -1 3 //Test 2 Section 2 275 41 5 126 160 125 161 -1 2 //Test 3 Section 2 275 38 5 106 161 111 160 -1 2 //Test 4 Section 2 end Now I changed my script so it reads the values from this script, and I changed the forward button so it jumps into new sections But I just cant seem to figure out how to jump back to a section This is the code that I use to go foward into a section: CODE if (pieces[0] == "end") { curRec += 2; displayLine(curRec); } else { Here is all my code: CODE // Displays the line in the arraylist public void displayLine(int linenumber) { // If the line number is in the range of total values if ((linenumber >= 0) && (linenumber < lines.Count)) { // Get the string out of the arraylist String line = (String)lines[linenumber]; // Split it into various pieces on the space String[] pieces = line.Split('\t'); if (pieces[0] == "end") { curRec += 2; displayLine(curRec); } else { txtID.Text = pieces[0]; txtMap.Text = pieces[1]; txtMoving.Text = pieces[2]; txtXStart.Text = pieces[3]; txtYStart.Text = pieces[4]; txtXEnd.Text = pieces[5]; txtYEnd.Text = pieces[6]; txtDirection.Text = pieces[7]; txtCount.Text = pieces[8]; txtComment.Text = pieces[9]; mobImage.ImageLocation = "D:/images/" + pieces[0] + ".jpg"; } } } // Arraylist to hold all lines of the file. ArrayList lines = new ArrayList(100); // Pointer variable to point to active record int curRec = 0; // Loading data and reading txt file public void Form1_Load(object sender, EventArgs e) { // Open the data file StreamReader f = new StreamReader(new FileStream(@"D:\monstersetbase.txt", FileMode.Open)); String curLine; // Read in the data line by line and add it to our ArrayList while ((curLine = f.ReadLine()) != null) { lines.Add(curLine); } // Close f.Close(); // Add one so it will not crash curRec += 1; // Display first line displayLine(curRec); } private void nxtButton_Click_1(object sender, EventArgs e) { if (curRec < lines.Count - 1) { curRec += 1; displayLine(curRec); prvButton.Enabled = true; } } private void prvButton_Click_1(object sender, EventArgs e) { if (curRec == 2) { prvButton.Enabled = false; } if (curRec > 0) { curRec -= 1; displayLine(curRec); } }
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