Develop Reference

Customize TextBox autocomplete

How do I change the autocomplete on a TextBox? I want that when I type a string, the box suggest items containing that string instead of starting with.
My code is:
class MyClass
{
private AutoCompleteStringCollection autoCompleteList = new AutoCompleteStringCollection();
public MyClass()
{
InitializeComponent();
autoCompleteList.AddRange(ListNames.Select(x=>x.Name).ToArray());
textBoxName.AutoCompleteCustomSource = autoCompleteList;
textBoxName.AutoCompleteSource = AutoCompleteSource.CustomSource;
textBoxName.AutoCompleteMode = AutoCompleteMode.Suggest;
textBoxName.KeyDown += TextBoxtextName_KeyDown;
}
private void TextBoxClient_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyData == Keys.Enter)
{
this.Name = (sender as TextBox).Text;
}
}
}
What I want:

Looking at your code you have everything you need but 1 line of code. That line is:
This will only work if the start of a string is entered
//Suggestion only
textBoxName.AutoCompleteMode = AutoCompleteMode.Suggest;
//Suggest and autocomplete
textBoxName.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
This will work as a contains method but works with a custom control
You can also make a custom textbox control that fits your needs.
Custom textbox class:
public class AutoCompleteTextBox : TextBox
{
private ListBox _listBox;
private bool _isAdded;
private String[] _values;
private String _formerValue = String.Empty;
public AutoCompleteTextBox()
{
InitializeComponent();
ResetListBox();
}
private void InitializeComponent()
{
_listBox = new ListBox();
this.KeyDown += this_KeyDown;
this.KeyUp += this_KeyUp;
}
private void ShowListBox()
{
if (!_isAdded)
{
Parent.Controls.Add(_listBox);
_listBox.Left = Left;
_listBox.Top = Top + Height;
_isAdded = true;
}
_listBox.Visible = true;
_listBox.BringToFront();
}
private void ResetListBox()
{
_listBox.Visible = false;
}
private void this_KeyUp(object sender, KeyEventArgs e)
{
UpdateListBox();
}
private void this_KeyDown(object sender, KeyEventArgs e)
{
switch (e.KeyCode)
{
case Keys.Enter:
case Keys.Tab:
{
if (_listBox.Visible)
{
Text = _listBox.SelectedItem.ToString();
ResetListBox();
_formerValue = Text;
this.Select(this.Text.Length, 0);
e.Handled = true;
}
break;
}
case Keys.Down:
{
if ((_listBox.Visible) && (_listBox.SelectedIndex < _listBox.Items.Count - 1))
_listBox.SelectedIndex++;
e.Handled = true;
break;
}
case Keys.Up:
{
if ((_listBox.Visible) && (_listBox.SelectedIndex > 0))
_listBox.SelectedIndex--;
e.Handled = true;
break;
}
}
}
protected override bool IsInputKey(Keys keyData)
{
switch (keyData)
{
case Keys.Tab:
if (_listBox.Visible)
return true;
else
return false;
default:
return base.IsInputKey(keyData);
}
}
private void UpdateListBox()
{
if (Text == _formerValue)
return;
_formerValue = this.Text;
string word = this.Text;
if (_values != null && word.Length > 0)
{
string[] matches = Array.FindAll(_values,
x => (x.ToLower().Contains(word.ToLower())));
if (matches.Length > 0)
{
ShowListBox();
_listBox.BeginUpdate();
_listBox.Items.Clear();
Array.ForEach(matches, x => _listBox.Items.Add(x));
_listBox.SelectedIndex = 0;
_listBox.Height = 0;
_listBox.Width = 0;
Focus();
using (Graphics graphics = _listBox.CreateGraphics())
{
for (int i = 0; i < _listBox.Items.Count; i++)
{
if (i < 20)
_listBox.Height += _listBox.GetItemHeight(i);
// it item width is larger than the current one
// set it to the new max item width
// GetItemRectangle does not work for me
// we add a little extra space by using '_'
int itemWidth = (int)graphics.MeasureString(((string)_listBox.Items[i]) + "_", _listBox.Font).Width;
_listBox.Width = (_listBox.Width < itemWidth) ? itemWidth : this.Width; ;
}
}
_listBox.EndUpdate();
}
else
{
ResetListBox();
}
}
else
{
ResetListBox();
}
}
public String[] Values
{
get
{
return _values;
}
set
{
_values = value;
}
}
public List<String> SelectedValues
{
get
{
String[] result = Text.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
return new List<String>(result);
}
}
}
Usage:
string[] nameArray = { "name1", "name2", "name3", "bla name" };
AutoCompleteTextBox tb = new AutoCompleteTextBox();
tb.Values = nameArray;
tb.Location = new Point(10,10);
tb.Size = new Size(25,75);
this.Controls.Add( tb );
I got the code for the custom control from: SO Question - Autocomplete contains

Stopping the calculations because of predicted error

I am unsure how to ask this question as I can't quite well translate it.
I am currently working on my own Windows Form Application that will calculate the dimensions of a given package in inches (written all together in string format) and calculate the dimensions in centimeters, milimeters or even meters and at this point I was wondering what if someone entered wrong dimensions and given measures can not be parsed.
Something like Environment.Exit(), but without closing the application just stopping calculations and writing a message that an error has occured.
If there is a question like this answered, please do link it because I haven't been able to find it.
namespace PretvaranjeDimenzija
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public double mjera = 1;
public bool pogreska = false;
public string mjeraKratica = " cm";
public string dimenzijeIspis = "";
private void buttonIzracunaj_Click(object sender, EventArgs e)
{
string dim = textBoxDimenzije.Text;
if (dim.Contains('.'))
{
dim = dim.Replace('.', ',');
}
if (dim.Length != 0)
{
if (dim.IndexOf('x') != -1)
{
string[] multiDim = dim.Split('x');
double[] multiDimCentimetara = new double[multiDim.Length];
bool[] uspjeh = new bool[multiDim.Length];
for (int i = 0; i < multiDim.Length; i++)
{
uspjeh[i] = double.TryParse(multiDim[i], out multiDimCentimetara[i]);
if (uspjeh[i] == false)
{
pogreska = true;
goto kraj;
}
}
kraj:
if (pogreska == true)
{
MessageBox.Show("Doslo je do pogreske!");
pogreska = false;
}
else
{
double[] dimenzije = new double[multiDim.Length];
for (int i = 0; i < dimenzije.Length; i++)
{
dimenzije[i] = multiDimCentimetara[i] * 2.54 * mjera;
if (i == dimenzije.Length - 1)
{
dimenzijeIspis += dimenzije[i].ToString() + mjeraKratica;
}
else
{
dimenzijeIspis += dimenzije[i].ToString() + "x";
}
}
textBoxIspisDimenzija.Text = dimenzijeIspis;
dimenzijeIspis = "";
}
}
else
{
double dimCentimetara;
if(double.TryParse(dim, out dimCentimetara))
{
double dimenzija = dimCentimetara * 2.54 * mjera;
dimenzijeIspis = dimenzija.ToString() + mjeraKratica;
textBoxIspisDimenzija.Text = dimenzijeIspis;
dimenzijeIspis = "";
}
else
{
MessageBox.Show("Doslo je do pogreske!");
return;
}
}
}
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
mjera = 0.01;
mjeraKratica = " m";
if (radioButton2.Checked == true)
{
radioButton2.Checked = false;
radioButton1.Checked = true;
}
if (radioButton3.Checked == true)
{
radioButton3.Checked = false;
radioButton1.Checked = true;
}
}
private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
mjera = 1;
mjeraKratica = " cm";
if (radioButton1.Checked == true)
{
radioButton1.Checked = false;
radioButton2.Checked = true;
}
if (radioButton3.Checked == true)
{
radioButton3.Checked = false;
radioButton2.Checked = true;
}
}
private void radioButton3_CheckedChanged(object sender, EventArgs e)
{
mjera = 10;
mjeraKratica = " mm";
if (radioButton2.Checked == true)
{
radioButton2.Checked = false;
radioButton3.Checked = true;
}
if (radioButton1.Checked == true)
{
radioButton1.Checked = false;
radioButton3.Checked = true;
}
}
}

It should be pretty simple, depending on your requirements. For example, you could just use a basic if block in your method.
void CalculateStuff()
{
// Get input. Do stuff.
if (IsInvalid)
{
MessageBox.Show("You did a bad thing.");
return; // exit the method.
}
// now that we know the input is good, do other stuff.
}
Substitute IsInvalid with whatever check condition you want that will return true if the input is not valid.

C# Make an autocomplete to a RichTextBox

I have a list of numberes, and I want to make a RichTextBox with autocomplete, so when the user start typing a number, it will give him autocomplete options from the list.
And I want it to be in a RichTextBox because I want the user to be able writing each number in a new line in the RichTextBox, so everytime the user presses enter, it will do the whole autocomplete thing all over again.
I don't really have an idea how to et this ting done.
any help would be very thankfull.
Thanks

I'll paste the code here. I never got the positioning of the box correct, so you will have to play around with the YOffset and the XOffset.
In your form OnLoad:
intellisenseRichTextBox.IntellisenseWords = new string[] { "Test", "Foo", "Bar", "Supercalifragilisticexpialidocious" };
intellisenseRichTextBox.YOffset = 132;
intellisenseRichTextBox.XOffset = 70;
And the classes:
public class NotificationForm : Form
{
public NotificationForm()
{
this.ShowInTaskbar = false;
//this.Enabled = true;
this.FormBorderStyle = FormBorderStyle.None;
}
protected override bool ShowWithoutActivation
{
get
{
return true;
}
}
protected override CreateParams CreateParams
{
get
{
CreateParams baseParams = base.CreateParams;
const int WS_EX_NOACTIVATE = 0x08000000;
const int WS_EX_TOOLWINDOW = 0x00000080;
baseParams.ExStyle |= (int)(WS_EX_NOACTIVATE | WS_EX_TOOLWINDOW);
return baseParams;
}
}
}
public class RichTextBoxIntellisense : RichTextBox
{
private NotificationForm intelliAutoCompleteForm;
private ListBox intelliAutoCompleteListBox;
private bool IsNotificationFormShowing;
private bool IsFromReplaceTab;
private bool IsFromMouseClick;
private int _suggestionCount = 20;
public string[] IntellisenseWords { get; set; }
public int YOffset { get; set; }
public int XOffset { get; set; }
public int SuggestionCount
{
get
{
return _suggestionCount;
}
set
{
_suggestionCount = value;
}
}
public RichTextBoxIntellisense()
{
this.AcceptsTab = true;
this.YOffset = 30;
intelliAutoCompleteForm = new NotificationForm();
intelliAutoCompleteForm.Size = new Size(200, 200);
intelliAutoCompleteForm.TopMost = true;
intelliAutoCompleteListBox = new ListBox();
intelliAutoCompleteListBox.Dock = DockStyle.Fill;
intelliAutoCompleteForm.Controls.Add(intelliAutoCompleteListBox);
this.TextChanged += RichTextBoxIntellisense_TextChanged;
this.KeyDown += RichTextBoxIntellisense_KeyDown;
this.KeyPress += RichTextBoxIntellisense_KeyPress;
this.SelectionChanged += RichTextBoxIntellisense_SelectionChanged;
intelliAutoCompleteListBox.Click += IntelliAutoCompleteListBox_Click;
intelliAutoCompleteListBox.SelectedIndexChanged += IntelliAutoCompleteListBox_SelectedIndexChanged;
intelliAutoCompleteForm.Show();
intelliAutoCompleteForm.Hide();
}
private void IntelliAutoCompleteListBox_SelectedIndexChanged(object sender, EventArgs e)
{
if(IsFromMouseClick)
{
if (intelliAutoCompleteListBox.SelectedIndex >= 0)
{
ReplaceCurrentWordWith(intelliAutoCompleteListBox.SelectedItem.ToString());
IsFromReplaceTab = false;
}
}
IsFromMouseClick = false;
}
private void IntelliAutoCompleteListBox_Click(object sender, EventArgs e)
{
IsFromMouseClick = true;
}
private void RichTextBoxIntellisense_SelectionChanged(object sender, EventArgs e)
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
private void RichTextBoxIntellisense_KeyPress(object sender, KeyPressEventArgs e)
{
if (IsFromReplaceTab)
{
e.Handled = true;
IsFromReplaceTab = false;
}
else
{
if(e.KeyChar == (char)Keys.Escape)
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
e.Handled = true;
}
}
}
private void RichTextBoxIntellisense_KeyDown(object sender, KeyEventArgs e)
{
if (IsNotificationFormShowing)
{
if (e.KeyCode == Keys.Up)
{
if(intelliAutoCompleteListBox.Items.Count > 0)
{
if(intelliAutoCompleteListBox.SelectedIndex < 0)
{
intelliAutoCompleteListBox.SelectedIndex = 0;
}
else if(intelliAutoCompleteListBox.SelectedIndex > 0)
{
intelliAutoCompleteListBox.SelectedIndex = intelliAutoCompleteListBox.SelectedIndex - 1;
}
}
e.Handled = true;
}
else if (e.KeyCode == Keys.Down)
{
if (intelliAutoCompleteListBox.Items.Count > 0)
{
if (intelliAutoCompleteListBox.SelectedIndex < 0)
{
intelliAutoCompleteListBox.SelectedIndex = 0;
}
else if (intelliAutoCompleteListBox.SelectedIndex < intelliAutoCompleteListBox.Items.Count - 1)
{
intelliAutoCompleteListBox.SelectedIndex = intelliAutoCompleteListBox.SelectedIndex + 1;
}
}
e.Handled = true;
}
else if (e.KeyCode == Keys.Enter)
{
if(intelliAutoCompleteListBox.SelectedIndex >= 0)
{
ReplaceCurrentWordWith(intelliAutoCompleteListBox.SelectedItem.ToString());
}
e.Handled = true;
}
else if (e.KeyCode == Keys.Tab)
{
if (intelliAutoCompleteListBox.SelectedIndex >= 0)
{
ReplaceCurrentWordWith(intelliAutoCompleteListBox.SelectedItem.ToString());
}
e.Handled = true;
}
}
}
private void RichTextBoxIntellisense_TextChanged(object sender, EventArgs e)
{
if (IntellisenseWords != null && IntellisenseWords.Length > 0)
{
string wordText;
int lastIndexOfSpace;
int lastIndexOfNewline;
int lastIndexOfTab;
int lastIndexOf;
if(this.SelectionStart == this.Text.Length)
{
if(this.SelectionStart > 0 && this.Text[this.SelectionStart - 1] != ' ' && this.Text[this.SelectionStart - 1] != '\t' && this.Text[this.SelectionStart - 1] != '\n')
{
wordText = this.Text.Substring(0,this.SelectionStart);
lastIndexOfSpace = wordText.LastIndexOf(' ');
lastIndexOfNewline = wordText.LastIndexOf('\n');
lastIndexOfTab = wordText.LastIndexOf('\t');
lastIndexOf = Math.Max(Math.Max(lastIndexOfSpace,lastIndexOfNewline),lastIndexOfTab);
if (lastIndexOf >= 0)
{
wordText = wordText.Substring(lastIndexOf + 1);
}
if (PopulateIntelliListBox(wordText))
{
ShowAutoCompleteForm();
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
else
{
char currentChar = this.Text[this.SelectionStart];
if(this.SelectionStart > 0)
{
if(this.SelectionStart > 0 && this.Text[this.SelectionStart - 1] != ' ' && this.Text[this.SelectionStart - 1] != '\t' && this.Text[this.SelectionStart - 1] != '\n'
&& (this.Text[this.SelectionStart] == ' ' || this.Text[this.SelectionStart] == '\t' || this.Text[this.SelectionStart] == '\n'))
{
wordText = this.Text.Substring(0, this.SelectionStart);
lastIndexOfSpace = wordText.LastIndexOf(' ');
lastIndexOfNewline = wordText.LastIndexOf('\n');
lastIndexOfTab = wordText.LastIndexOf('\t');
lastIndexOf = Math.Max(Math.Max(lastIndexOfSpace, lastIndexOfNewline), lastIndexOfTab);
if (lastIndexOf >= 0)
{
wordText = wordText.Substring(lastIndexOf + 1);
}
if(PopulateIntelliListBox(wordText))
{
ShowAutoCompleteForm();
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
}
else
{
intelliAutoCompleteForm.Hide();
IsNotificationFormShowing = false;
}
}
private bool PopulateIntelliListBox(string wordTyping)
{
intelliAutoCompleteListBox.Items.Clear();
List<KeyValuePair<int, string>> tempWords = new List<KeyValuePair<int, string>>();
string[] outArray;
for(int i = 0; i < IntellisenseWords.Length; i++)
{
if(IntellisenseWords[i].StartsWith(wordTyping, StringComparison.CurrentCultureIgnoreCase))
{
tempWords.Add(new KeyValuePair<int, string>(1, IntellisenseWords[i]));
}
}
if(tempWords.Count < _suggestionCount && wordTyping.Length > 1)
{
for (int i = 0; i < IntellisenseWords.Length; i++)
{
if (IntellisenseWords[i].Contains(wordTyping, StringComparison.CurrentCultureIgnoreCase))
{
if(tempWords.Count(c => c.Value == IntellisenseWords[i]) == 0)
{
tempWords.Add(new KeyValuePair<int, string>(2, IntellisenseWords[i]));
}
}
}
}
outArray = tempWords.OrderBy(o => o.Key).Take(_suggestionCount).Select(s => s.Value).ToArray();
intelliAutoCompleteListBox.Items.AddRange(outArray);
return outArray.Length > 0;
}
private void ShowAutoCompleteForm()
{
Point tmpPoint = this.PointToClient(this.Location);
Point tmpSelPoint = this.GetPositionFromCharIndex(this.SelectionStart);
intelliAutoCompleteForm.Location = new Point((-1 * tmpPoint.X) + tmpSelPoint.X + this.XOffset, (-1 * tmpPoint.Y) + tmpSelPoint.Y + this.Margin.Top + this.YOffset);
intelliAutoCompleteForm.Show();
IsNotificationFormShowing = true;
this.Focus();
}
private void ReplaceCurrentWordWith(string Word)
{
string startString = "";
string endString = this.Text.Substring(this.SelectionStart);
string wordText = this.Text.Substring(0, this.SelectionStart);
int lastIndexOfSpace = wordText.LastIndexOf(' ');
int lastIndexOfNewline = wordText.LastIndexOf('\n');
int lastIndexOfTab = wordText.LastIndexOf('\t');
int lastIndexOf = Math.Max(Math.Max(lastIndexOfSpace, lastIndexOfNewline), lastIndexOfTab);
if (lastIndexOf >= 0)
{
startString = wordText.Substring(0, lastIndexOf + 1);
wordText = wordText.Substring(lastIndexOf + 1);
}
this.Text = String.Format("{0}{1} {2}", startString, Word, endString);
if(lastIndexOf >= 0)
{
this.SelectionStart = startString.Length + Word.Length + 1;
}
else
{
this.SelectionStart = Word.Length + 1;
}
IsFromReplaceTab = true;
}
}

How do I stop a program from calculating if no radio button is selected?

I'm really new to programming. C# is the first class I've taken and I'm stuck on this a project. We had to create a program that will calculate the cost of workshop after selecting a workshop radiobutton and a location radio button. I've got everything working the way it's supposed to except for one thing.
Let's say you select a workshop, but you don't select a location. I have it to where a MessageBox will show up saying to "select a location," but how do I stop the program from calculating if this happens? As of now, it will just calculate and give the location amount 0. I need it to not calculate at all.
public partial class frmWorkshopSelector : Form
{
public frmWorkshopSelector()
{
InitializeComponent();
}
private void btnExit_Click(object sender, EventArgs e)
{
this.Close(); //When clicking the exit button, the program will close
}
private void btncalc_Click(object sender, EventArgs e)
{
int wsregistration = 0;
int lcost = 0;
const decimal DAYS = 3;
//For the following if statements, depending on what workshop and location is selected,
//their correstponding registration and lodging fees will be displayed
{
if (rbtHandlingStress.Checked == true)
{
wsregistration = 1000;
}
else if (rbtSupervisionSkills.Checked == true)
{
wsregistration = 1500;
}
else if (rbtTimeManagement.Checked == true)
{
wsregistration = 800;
}
else
MessageBox.Show("Please Select a Workshop");
lblTotalCost.Text = "";
lblLodgingCost.Text = "";
lblRegistrationCost.Text = "";
}
{
if (rbtAustin.Checked == true)
{
lcost = 150;
}
else if (rbtChicago.Checked == true)
{
lcost = 225;
}
else if (rbtDallas.Checked == true)
{
lcost = 175;
}
else
{
MessageBox.Show("Please Select a Location");
lblRegistrationCost.Text = " ";
lblTotalCost.Text = " ";
lblLodgingCost.Text = " ";
}
}
lblRegistrationCost.Text = wsregistration.ToString("C");
lblLodgingCost.Text = lcost.ToString("C");
lblTotalCost.Text = (wsregistration + (lcost * DAYS)).ToString("C");
}
private void btnReset_Click(object sender, EventArgs e)
{
//unchecks all radio buttons as well as clears out the previous calculations
lblRegistrationCost.Text = "";
lblLodgingCost.Text = "";
lblTotalCost.Text = "";
rbtHandlingStress.Checked = false;
rbtSupervisionSkills.Checked = false;
rbtTimeManagement.Checked = false;
rbtAustin.Checked = false;
rbtChicago.Checked = false;
rbtDallas.Checked = false;
}
}

You have to exit from the method. Added return statement in else block.
private void btncalc_Click(object sender, EventArgs e)
{
int wsregistration = 0;
int lcost = 0;
const decimal DAYS = 3;
//For the following if statements, depending on what workshop and location is selected,
//their correstponding registration and lodging fees will be displayed
if (rbtHandlingStress.Checked == true)
{
wsregistration = 1000;
}
else if (rbtSupervisionSkills.Checked == true)
{
wsregistration = 1500;
}
else if (rbtTimeManagement.Checked == true)
{
wsregistration = 800;
}
else
{
lblTotalCost.Text = "";
lblLodgingCost.Text = "";
lblRegistrationCost.Text = "";
MessageBox.Show("Please Select a Workshop");
return;
}
if (rbtAustin.Checked == true)
{
lcost = 150;
}
else if (rbtChicago.Checked == true)
{
lcost = 225;
}
else if (rbtDallas.Checked == true)
{
lcost = 175;
}
else
{
lblRegistrationCost.Text = " ";
lblTotalCost.Text = " ";
lblLodgingCost.Text = " ";
MessageBox.Show("Please Select a Location");
return;
}
lblRegistrationCost.Text = wsregistration.ToString("C");
lblLodgingCost.Text = lcost.ToString("C");
lblTotalCost.Text = (wsregistration + (lcost * DAYS)).ToString("C");
}

writing a "return" anywhere within the function exits that function, maybe after you show the message box to enter location, you type
return;
and this should do the job.

Just Add return statement in your code after showing the message box like below
public partial class frmWorkshopSelector : Form
{
public frmWorkshopSelector()
{
InitializeComponent();
}
private void btnExit_Click(object sender, EventArgs e)
{
this.Close(); //When clicking the exit button, the program will close
}
private void btncalc_Click(object sender, EventArgs e)
{
int wsregistration = 0;
int lcost = 0;
const decimal DAYS = 3;
//For the following if statements, depending on what workshop and location is selected,
//their correstponding registration and lodging fees will be displayed
{
if (rbtHandlingStress.Checked == true)
{
wsregistration = 1000;
}
else if (rbtSupervisionSkills.Checked == true)
{
wsregistration = 1500;
}
else if (rbtTimeManagement.Checked == true)
{
wsregistration = 800;
}
else
MessageBox.Show("Please Select a Workshop");
lblTotalCost.Text = "";
lblLodgingCost.Text = "";
lblRegistrationCost.Text = "";
return;
}
{
if (rbtAustin.Checked == true)
{
lcost = 150;
}
else if (rbtChicago.Checked == true)
{
lcost = 225;
}
else if (rbtDallas.Checked == true)
{
lcost = 175;
}
else
{
MessageBox.Show("Please Select a Location");
lblRegistrationCost.Text = " ";
lblTotalCost.Text = " ";
lblLodgingCost.Text = " ";
return;
}
}
lblRegistrationCost.Text = wsregistration.ToString("C");
lblLodgingCost.Text = lcost.ToString("C");
lblTotalCost.Text = (wsregistration + (lcost * DAYS)).ToString("C");
}
private void btnReset_Click(object sender, EventArgs e)
{ //uncheks all radio buttons as well as clears out the previous calculations
lblRegistrationCost.Text = "";
lblLodgingCost.Text = "";
lblTotalCost.Text = "";
rbtHandlingStress.Checked = false;
rbtSupervisionSkills.Checked = false;
rbtTimeManagement.Checked = false;
rbtAustin.Checked = false;
rbtChicago.Checked = false;
rbtDallas.Checked = false;
}
}
}

Add text to list when user presses button in Android app?

I am having some trouble with the verse button. i am not sure what I am doing wrong but I need to make it where the user presses the verse button and it adds the textview of the word "Verse" to the list that was created. Please help. What am I doing wrong. This was written for Android using C# in Xamarin by the way.
namespace Songression
{
public class CheckRect{
public int top{ get; set; }
public int height{ get; set; }
}
[Activity (Label = "Songression")]
public class results : Activity, View.IOnTouchListener
{
//CheckBox[] check;
List<LinearLayout> linearSet;
//List<CheckRect> rectList;
ScrollView scrollView;
EditText editText = null;
LinearLayout view;
bool moveOrEdit = false;
int screenWidth;
List<String> checkTextList;
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
SetContentView (Resource.Layout.results);
var metrics = Resources.DisplayMetrics;
screenWidth = metrics.WidthPixels;
//var widthInDp = ConvertPixelsToDp(metrics.WidthPixels);
view = FindViewById<LinearLayout> (Resource.Id.linearlayout0);
checkTextList = new List<String>();
checkTextList.Add ("10 bucks in your pocket and barely making it.");
checkTextList.Add ("100 steps to the water");
checkTextList.Add ("18 and going to Hollywood");
checkTextList.Add ("3 years to propose");
String checkTextSet = Intent.GetStringExtra ("MyData") ?? "";
if (checkTextSet == null || checkTextSet == "") {
} else {
String[] textSet = checkTextSet.Split (',');
checkTextList.AddRange (textSet);
}
//Back Button
Button buttonBack = FindViewById<Button> (Resource.Id.buttonBack);
buttonBack.Click += delegate {
Finish();
};
///
//AddLine Button
Button buttonAdd = FindViewById<Button> (Resource.Id.buttonAdd);
buttonAdd.Click += delegate {
addTextPro(false,"");
};
///
//Add Verse
//Button buttonVerse = FindViewById <Button> (Resource.Id.buttonVerse);
//buttonVerse.Click += delegate {
// checkTextList.Add("Verse"));
//};
{
///
//Email Button
Button buttonEmail = FindViewById<Button> (Resource.Id.buttonEmail);
buttonEmail.Click += delegate {
runEmailPro ();
};
scrollView = FindViewById<ScrollView> (Resource.Id.scrollview0);
List<String> resultList = new List<String> ();
int count = checkTextList.Count;//myResources.check_indexSet.Count;
linearSet = new List<LinearLayout> ();
for (int index = 0; index < view.ChildCount; index++) {
view.RemoveViewAt (index);
}
///
//Initiate Rect and Check
if (myResources.isLast == false) {
for (int index = 0; index < count; index++) {
InitiateWidgets (index, false);
}
} else {
var sdCardPath = Android.OS.Environment.ExternalStorageDirectory.Path;
var lastPath = Path.Combine (sdCardPath, "lastlasttxt.txt");
String fileNamePath = Path.Combine (sdCardPath, readFileSdcardFile (lastPath));
String loadData;
if (File.Exists (fileNamePath))
loadData = File.ReadAllText (fileNamePath);
else
return;
String[] splitData = loadData.Split ('\n');
foreach (String item in splitData) {
if (item.CompareTo ("") == 0)
continue;
if (item [0] == 't') {
addTextPro (true, item.Substring (1));
}
if (item [0] == 'c') {
bool bChecked = false;
if (item [1] != '0') {
bChecked = true;
} else {
bChecked = false;
}
InitiateWidgets (0, true, item.Substring (2), bChecked);
}
}
}
///
//save function
Button buttonSave = FindViewById<Button> (Resource.Id.buttonSave);
buttonSave.Click += delegate {
saveResultPro ();
};
///
//move function
Button buttonMove = FindViewById<Button> (Resource.Id.buttonMove);
buttonMove.Text = "Move";
buttonMove.Click += delegate {
removeAllFocus (moveOrEdit);
if (moveOrEdit == false) {
buttonMove.Text = "Edit";
moveOrEdit = true;
} else {
buttonMove.Text = "Move";
moveOrEdit = false;
}
};
//final function
Button buttonFinal = FindViewById<Button> (Resource.Id.buttonFinal);
buttonFinal.Click += delegate {
var fResults = new Intent (this, typeof(finalResults));
fResults.PutExtra ("MyData", getAllInfo ());
StartActivity (fResults);
};
}
}
//wirte the file on the sdcard.
public void writeFileSdcardFile(String path,String write_str,bool bTitle){
if (bTitle == true) {
var sdCardPath = Android.OS.Environment.ExternalStorageDirectory.Path;
var lastPath = Path.Combine(sdCardPath,"lastlasttxt.txt");
if (File.Exists (path) == false) {
File.WriteAllText (path, write_str);
}
else {
String[] existFile = readFileSdcardFile (path).Split('\n');
foreach (String item in existFile) {
if (write_str.Substring (0, write_str.Length - 1).CompareTo (item) == 0) {
File.WriteAllText (lastPath, write_str.Substring (0, write_str.Length - 1));
return;
}
}
File.AppendAllText (path, write_str);
}
File.WriteAllText (lastPath, write_str.Substring(0, write_str.Length - 1));
} else {
File.WriteAllText (path, write_str);
}
}
public String readFileSdcardFile(String path) {
if (File.Exists (path))
return File.ReadAllText (path);
else
return "";
}
public String getAllInfo()
{
String extra = "";
foreach(LinearLayout linear in linearSet)
{
var widgetType = linear.GetChildAt (0).GetType ().ToString ();
if (widgetType.CompareTo ("Android.Widget.EditText") == 0) {
EditText editText = (EditText)linear.GetChildAt (0);
extra += editText.Text + "\n";
} else if (widgetType.CompareTo ("Android.Widget.CheckBox") == 0) {
CheckBox checBox = (CheckBox)linear.GetChildAt (0);
if (checBox.Checked == true)
extra +="1" + checBox.Text + "\n";
else
extra +="0" + checBox.Text + "\n";
}
}
return extra;
}
//
//run email pro
public void runEmailPro(){
var email = new Intent (Android.Content.Intent.ActionSend);
email.PutExtra (Android.Content.Intent.ExtraEmail,
new string[]{"person1#xamarin.com", "person2#xamrin.com"} );
email.PutExtra (Android.Content.Intent.ExtraCc,
new string[]{"person3#xamarin.com"} );
email.PutExtra (Android.Content.Intent.ExtraSubject, "Hello Email");
email.PutExtra (Android.Content.Intent.ExtraText,
getAllInfo());
email.SetType ("message/rfc822");
StartActivity (email);
}
//
// add Text code
public void addTextPro(bool bLast,String textWidget)
{
LinearLayout linear = new LinearLayout (this);
ImageView imgView = new ImageView (this);
imgView.SetImageResource (Resource.Drawable.delete123);
editText = new EditText (this);
editText.SetSingleLine ();
editText.SetWidth(screenWidth - 50);
if (bLast)
editText.Text = textWidget;
if (moveOrEdit == true)
editText.SetOnTouchListener (this);
else
editText.SetOnTouchListener (null);
linear.AddView(editText);
linear.AddView(imgView);
//delete function.
imgView.Click += delegate {
deleteMessage(imgView);
};
linearSet.Add(linear);
view.AddView(linear);
}
//
//delete message
public void deleteMessage(ImageView imgView)
{
var builder = new AlertDialog.Builder(this);
builder.SetTitle("Delete Phrase!");
builder.SetMessage ("Are you sure you would like to delete this phrase?");
builder.SetPositiveButton("Yes", (sender, args) => {
// Yes button
LinearLayout parent = (LinearLayout)imgView.Parent;
parent.Visibility = ViewStates.Invisible;
int childIndex = view.IndexOfChild(parent);
view.RemoveView(parent);
linearSet.Remove(parent);});
builder.SetNegativeButton("No", (sender, args) => {});
builder.SetCancelable(false);
builder.Show ();
}
//
//save Result
public void saveResultPro()
{
var factory = LayoutInflater.From(this);
var builder = new AlertDialog.Builder(this);
builder.SetTitle("Song Name");
EditText songText = new EditText (this);
builder.SetView (songText);
//builder.SetView(factory.Inflate(Resource.Layout.saveDialog,
// FindViewById<ViewGroup>(Resource.Id.saveDialog)));
builder.SetPositiveButton("OK", (sender, args) => {
var sdCardPath = Android.OS.Environment.ExternalStorageDirectory.Path;
//EditText songText = FindViewById<EditText> (Resource.Id.projectName);
var textPath = Path.Combine(sdCardPath,songText.Text);
var textTitlePath = Path.Combine(sdCardPath,"Titles.txt");
String saveData = "";
foreach(LinearLayout linear in linearSet)
{
var widgetType = linear.GetChildAt (0).GetType ().ToString ();
if (widgetType.CompareTo ("Android.Widget.EditText") == 0) {
EditText editText = (EditText)linear.GetChildAt (0);
saveData += "t" + editText.Text + "\n";
} else if (widgetType.CompareTo ("Android.Widget.CheckBox") == 0) {
CheckBox checBox = (CheckBox)linear.GetChildAt (0);
if (checBox.Checked == true)
saveData += "c1" + checBox.Text + "\n";
else
saveData += "c0" + checBox.Text + "\n";
}
}
writeFileSdcardFile(textTitlePath,songText.Text + "\n",true);
writeFileSdcardFile(textPath,saveData,false);
});
builder.SetNegativeButton("Cancel", (sender, args) => {});
builder.SetCancelable(false);
builder.Show ();
}
//remove All focus
public void removeAllFocus(bool flag){
View.IOnTouchListener context = null;
if (flag == false){
context = this;
}
else{
context = null;
}
foreach (LinearLayout linear in linearSet) {
var widgetType = linear.GetChildAt (0).GetType ().ToString ();
if (widgetType.CompareTo ("Android.Widget.EditText") == 0) {
EditText editText = (EditText)linear.GetChildAt (0);
editText.SetOnTouchListener (context);
} else if (widgetType.CompareTo ("Android.Widget.CheckBox") == 0) {
CheckBox checBox = (CheckBox)linear.GetChildAt (0);
checBox.SetOnTouchListener (context);
}
}
scrollView.SetOnTouchListener (context);
}
//
//initiate widgets
public void InitiateWidgets(int index,bool bLast,String widgetText = "", bool bSel = false){
LinearLayout linear = new LinearLayout (this);
CheckBox check = new CheckBox(this);
ImageView imgView = new ImageView (this);
//delete function.
imgView.Click += delegate {
deleteMessage(imgView);
};
if (bLast == false) {
//int stringIndex = Resource.String.checkname0 + myResources.check_indexSet [index];
check.Text = checkTextList[index];
if (index < 4) {
if (myResources.check_index [index] == 1)
check.Checked = true;
else {
check.Checked = false;
}
} else {
check.Checked = true;
}
} else {
check.Text = widgetText;
check.Checked = bSel;
}
check.SetWidth (screenWidth - 55);
check.SetOnTouchListener (null);
imgView.SetImageResource (Resource.Drawable.delete123);
linear.AddView (check);
linear.AddView (imgView);
linearSet.Add(linear);
view.AddView (linear);
scrollView.SetOnTouchListener (null);
}
//
//Touch Event
float _viewY = 0;
//bool flag = false;
bool check_flag = false;
LinearLayout parentLayout;
int selTop;
int selBottom;
bool downFlag = false;
public bool OnTouch(View v, MotionEvent e)
{
switch (e.Action)
{
case MotionEventActions.Down:
if (v != scrollView) {
_viewY = e.GetY ();
parentLayout = (LinearLayout)v.Parent;
selTop = parentLayout.Top;
selBottom = parentLayout.Bottom;
check_flag = true;
downFlag = true;
}
break;
case MotionEventActions.Move:
if (v == scrollView && downFlag == true) {
var top = (int)(e.GetY () - _viewY);
var bottom = (int)(top + 55);
parentLayout.Layout (parentLayout.Left, top, parentLayout.Right, bottom);
check_flag = false;
}
break;
case MotionEventActions.Up:
if (downFlag == false)
return true;
if (parentLayout == null)
return true;
int originalPos = 0;
int placePos = -1;
downFlag = false;
if (parentLayout.GetChildAt(0).GetType ().ToString ().CompareTo ("Android.Widget.CheckBox") == 0) {
if (check_flag == true) {
CheckBox selCheck = (CheckBox)parentLayout.GetChildAt (0);
if (selCheck.Checked == false) {
selCheck.Checked = true;
} else {
selCheck.Checked = false;
}
check_flag = false;
return true;
}
}
if (parentLayout.GetChildAt(0).GetType ().ToString ().CompareTo ("Android.Widget.EditText") == 0) {
if (check_flag == true) {
EditText selText = (EditText)parentLayout.GetChildAt (0);
check_flag = false;
return true;
}
}
if (v == scrollView) {
int linearCount = linearSet.Count;
int index;
for (index = 0; index < linearCount; index++) {
if (parentLayout == linearSet [index]) {
originalPos = index;
break;
}
}
//Laying position.
for (index = 0; index < linearCount; index++) {
if (originalPos == index)
continue;
if (linearSet[originalPos].Top < linearSet [index].Top) {
if (originalPos == index - 1) {
linearSet[originalPos].Layout (linearSet[originalPos].Left,
selTop, linearSet[originalPos].Right,
selBottom);
return true;
} else {
if (index > originalPos) {
placePos = index - 1;
break;
} else {
placePos = index;
break;
}
}
}
/*if (linearSet [originalPos].Top == linearSet [index].Top) {
linearSet[originalPos].Layout (linearSet[originalPos].Left,
selTop, linearSet[originalPos].Right,
selBottom);
return true;
}*/
}
//Is original pos?
if ((originalPos == linearCount - 1) && (placePos == -1)) {
linearSet[originalPos].Layout (linearSet[originalPos].Left, selTop,
linearSet[originalPos].Right, selBottom);
return true;
}
if (placePos == -1)
placePos = linearCount - 1;
//Change the position on the result page.
int orgTop;
int orgBottom;
orgTop = linearSet [originalPos].Top;
orgBottom = linearSet [originalPos].Bottom;
linearSet [originalPos].Layout (linearSet[originalPos].Left, linearSet [placePos].Top,
linearSet[originalPos].Right, linearSet [placePos].Bottom);
LinearLayout tempLinear = linearSet [originalPos];
if (originalPos >= placePos) {
for (index = originalPos - 1; index >= placePos; index--) {
linearSet [index].Layout (linearSet[originalPos].Left, linearSet [index + 1].Top,
linearSet[originalPos].Right, linearSet [index + 1].Bottom);
linearSet [index + 1] = linearSet [index];
}
} else {
for (index = originalPos + 1; index <= placePos; index++){
linearSet [index].Layout (linearSet[originalPos].Left, linearSet [index - 1].Top,
linearSet[originalPos].Right, linearSet [index - 1].Bottom);
linearSet [index - 1] = linearSet [index];
}
}
linearSet [placePos] = tempLinear;
linearSet [placePos].Layout (linearSet[placePos].Left, orgTop,
linearSet[placePos].Right, orgBottom);
view.RemoveViews (0, view.ChildCount);
for (index = 0; index < linearSet.Count; index++) {
view.AddView(linearSet[index]);
}
}
break;
}
return true;
}
}
}

You missed to register listener to the Button click and override onClick