How to display next letter using button in c#

Question

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApplication31 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void A( object sender, EventArgs e) { // display G int row, column; for (row = 0; row { for (column = 0; column { if ((column == 1 && row != 0 && row != 6) || ((row == 0 || row == 6) && column > 1 && column 2 && column textBox1.AppendText( "*" ); else textBox1.AppendText( " " ); } textBox1.AppendText(Environment.NewLine); } textBox1.AppendText(Environment.NewLine); //Here i want a code so that when i click on my button it will display next letter //DISPLAY Z for (row = 0; row { for (column = 0; column { if (((row == 0 || row == 6) && column >= 0 && column textBox1.AppendText( "*" ); else textBox1.AppendText( " " ); } textBox1.AppendText(Environment.NewLine); } textBox1.AppendText(Environment.NewLine); } } } Here is my code and i want display letter by clicking button .when i click on button for first time it should display G and when i click for second time it should display Z.

Amit Gupta · Answer

1. Create seperate function for each 26 alphabet (that would help you for better maintance) 2. Create a method that display all the alphabet like public ​ void ShowAlphabet( int index) { if (index>=0 && index { switch (index) { case 0: showA(); break ; case 1: showB(); break ; // and so on.... } } } 3. Call that function on button click int alphaIndex =0; private btn_click(...) { ShowAlphabet(alphaIndex); alphaIndex++; } Do let me know if you require any futher clarifucations

Amit Gupta · Answer

You haven't explain what your code is doing and for what purpose it has been developed, where the letter Z came from?

James Axsom · Answer

Hi Sonu. Hope my response provides perks your inspiration and gives you creative ideas At application start Application is at the letter G Application is at letter Z Application Code: using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace SandBox { public partial class MyMainForm : Form { // You know... You get up in the morning, stretch your arms, yawn, // rub the grime out of your eyes... // and hits you, "I think I'll help someone today". // Support Variables ArrayList m_Alphabet = null ; // an arraylist of 26 letters a.k.a the alphabet int m_currentIndex = -1; // represents the current index (or letter) in arraylist StringBuilder m_sbMethod2 = null ; // the means to build an alphabet string StringBuilder m_sbAlphabet = null ; // the means to build to alphabet string // Class Constructor public MyMainForm() { InitializeComponent(); // create the 26 letter english alphabet CreateAlphabet(); // create string builders m_sbMethod2 = new StringBuilder(); m_sbAlphabet = new StringBuilder(); } // Class Desconstructor ~MyMainForm() { // Clean Up m_Alphabet = null ; m_sbMethod2 = null ; m_sbAlphabet = null ; } private void MyMainForm_Load( object sender, EventArgs e) { // initialize ui control states btnLetter.Text = GetLetterButtonTextState(); btnLetter.Enabled = GetLetterButtonEnabledState(); } private void CreateAlphabet() { // Method: CreateAlphabet // Return: None // Populate an ArrayList with 26 letters // create the alphabet m_Alphabet = new ArrayList(); // from A to Z populate the arraylist m_Alphabet.Add( "A" ); // Index 0 m_Alphabet.Add( "B" ); // Index 1 m_Alphabet.Add( "C" ); // Index 2 m_Alphabet.Add( "D" ); // Index 3 m_Alphabet.Add( "E" ); // Index 4 m_Alphabet.Add( "F" ); // Index 5 m_Alphabet.Add( "G" ); // Index 6 m_Alphabet.Add( "H" ); // Index 7 m_Alphabet.Add( "I" ); // Index 8 m_Alphabet.Add( "J" ); // Index 9 m_Alphabet.Add( "K" ); // Index 10 m_Alphabet.Add( "L" ); // Index 11 m_Alphabet.Add( "M" ); // Index 12 m_Alphabet.Add( "N" ); // Index 13 m_Alphabet.Add( "O" ); // Index 14 m_Alphabet.Add( "P" ); // Index 15 m_Alphabet.Add( "Q" ); // Index 16 m_Alphabet.Add( "R" ); // Index 17 m_Alphabet.Add( "S" ); // Index 18 m_Alphabet.Add( "T" ); // Index 19 m_Alphabet.Add( "U" ); // Index 20 m_Alphabet.Add( "V" ); // Index 21 m_Alphabet.Add( "W" ); // Index 22 m_Alphabet.Add( "X" ); // Index 23 m_Alphabet.Add( "Y" ); // Index 24 m_Alphabet.Add( "Z" ); // Index 25 } private Boolean GetLetterButtonEnabledState() { // Always idiot proof your application // Method: GetNextButtonEnabledState // Return: Boolean // returns btnNext.Enabled state based on runtime conditions in the application Boolean result = false ; // default state disabled // Conditions for true // The current index is less than 25 Boolean condition1 = (m_currentIndex result = (condition1 == true ); return result; } private string GetLetterButtonTextState() { // Method: GetLetterButtonTextState // Return: string // returns btnLetter.Text state based on runtime conditions in the application string result = string .Empty; if (m_currentIndex==-1) { result = "Begin" ; } if (m_currentIndex>-1 && m_currentIndex { result = "Next" ; } if (m_currentIndex==25) { result = "End" ; } return result; } private void btnLetter_Click( object sender, EventArgs e) { // Method: btnLetter_Click // Return: None // executes code demonstrating 3 methods for academic purposes to help someone // advance the m_current index m_currentIndex++; // a letter in the arraylist based on the current index string currentLetter = m_Alphabet[m_currentIndex].ToString(); // *** CODE FOR METHOD 1 -- The next letter replaces the current letter if (m_currentIndex==6) { // when we get to the letter G, then put G txtMethod1.Text = currentLetter; } if (m_currentIndex==25) { // when we get to the letter Z then replace G with Z txtMethod1.Text = currentLetter; } // *** END METHOD 1 *** // *** CODE FOR METHOD 2 - The current letter and the next letter appear in sequence if (m_currentIndex == 6) { // when we get to the letter G, then string build G m_sbMethod2.Append(currentLetter); } if (m_currentIndex == 25) { // when we get to the letter Z then string build Z m_sbMethod2.Append(currentLetter); } txtMethod2.Text = m_sbMethod2.ToString(); // *** END METHOD 2 *** // CODE FOR THE ALPHABET - The alphabet per a button click A,B,C,D and so on to Z m_sbAlphabet.Append(currentLetter); txtAlphabet.Text = m_sbAlphabet.ToString(); // *** END ALPHABET *** btnLetter.Enabled = GetLetterButtonEnabledState(); btnLetter.Text = GetLetterButtonTextState(); } } }

Amit Gupta · Answer

That's what I am taking about, don't use any textbox inside loop, you can use string builder class for the same, each method should be independent alongwith make your method return type inatead of void and then in swich case append that string to textbox, so that it can append all your text next to each other

SONU GUPTA · Answer

AMIT i think u dint get my question i have already created ABCD with the help of star representation...But i want now that whenever i click my button i should get next letter displayed inside my textbox

SONU GUPTA · Answer

hi amit gupta can u please elaborate how by using if or switch statement i can do button click event

Amit Gupta · Answer

If you have been choosen for displaying images rather than code for each alphabet then there is a concise way but as you are not doing such things, you have to use if or switch case condition.

SONU GUPTA · Answer

HI AMIT actually i want to build the project for 26 letters but i just taken two letters out of it.so i need like this when i clicken on button it should display first letter when i clicked button again it should display second letter and the process should continue

SONU GUPTA · Answer

Hi Amit the loops are used for generating G and Z like function with the help of Star

Amit Gupta · Answer

The loop is used for generating Alphabets with star?

SONU GUPTA · Answer

AMIT GUPTA actually i have to do this for 26 letter..this would not be the way...

SONU GUPTA · Answer

Actually i m working on a project .To teach children ABCD automatatically without any teacher ...i m already done the coding for other letters too but i want to add button event please help

Amit Gupta · Answer

Regardless of your code, you can do like bool ClickCount=0; if(ClickCount ==0) Call G function Else Call Z function

Ramesh Palanivel · Answer

Hi Sonu, We need to know why you want to display G and Z? Are you giving any lines in input field?

SONU GUPTA · Answer

actually my code is for displaying the letter G and Z. First few lines are used for displaying G And the last few lines are used for displaying .But i want to designed these in such a way that when I click my button for first time it should display only G and when i clicked button for second time it should display only Z ...how can i do these

Ramesh Palanivel · Answer

Hi Sonu, What is your input and what is your expected out put.. Please explain it briefly.

How to display next letter using button in c#

Answers (16)