I have a WPF form that I have created programatically. It is basically a list of items with 2 DatePicker objects to specify a range of dates. I have everything working for the most part, but I need to fire some logic on the SelectedDateChanged event.
The problem is, since the DatePicker's are generated dynamically based on selections from a previous form, I need to use an anonymous listener (or whatever you call them in .NET). I have been unable to do it the way I know how and I cant seem to find any example or help through google either. Thanks in advance for any tips.
Generating DatePickers:
public SystemInterval(Role role)
{
this.role = role;
InitializeComponent();
lbls = new Label[role.RoleSystems.Length];
dp = new DatePicker[role.RoleSystems.Length * 2];
cks = new CheckBox[role.RoleSystems.Length];
ScrollViewer sv = new ScrollViewer();
sv.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;
sv.VerticalAlignment = System.Windows.VerticalAlignment.Top;
sv.Margin = new Thickness(0,50,0,40);
Grid g = new Grid();
g.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
g.VerticalAlignment = System.Windows.VerticalAlignment.Top;
ColumnDefinition col1 = new ColumnDefinition();
col1.Width = new GridLength(46);
ColumnDefinition col2 = new ColumnDefinition();
col2.Width = GridLength.Auto;
ColumnDefinition col3 = new ColumnDefinition();
col3.Width = new GridLength(150);
ColumnDefinition col4 = new ColumnDefinition();
col4.Width = new GridLength(150);
g.ColumnDefinitions.Add(col1);
g.ColumnDefinitions.Add(col2);
g.ColumnDefinitions.Add(col3);
g.ColumnDefinitions.Add(col4);
sv.Content = g;
LayoutRoot.Children.Add(sv);
for (int r = 0; r < cks.Length; r++)
{
g.RowDefinitions.Add(new RowDefinition());
}
g.Height = (lbls.Length * 25) + (lbls.Length * 5);
for (int i = 0, j = 0; i < cks.Length; i++, j+=2)
{
cks[i] = new CheckBox();
cks[i].IsChecked = false;
cks[i].VerticalAlignment = System.Windows.VerticalAlignment.Center;
cks[i].HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
Grid.SetColumn(cks[i], 0);
Grid.SetRow(cks[i], i);
g.Children.Add(cks[i]);
lbls[i] = new Label();
lbls[i].Height = 25;
lbls[i].Content = role.RoleSystems[i].SystemName;
lbls[i].VerticalAlignment = System.Windows.VerticalAlignment.Center;
lbls[i].HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
Grid.SetColumn(lbls[i], 1);
Grid.SetRow(lbls[i], i);
g.Children.Add(lbls[i]);
dp[j] = new DatePicker();
dp[j].Height = 25;
dp[j].Width = 115;
dp[j].VerticalAlignment = System.Windows.VerticalAlignment.Center;
dp[j].HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
dp[j].IsEnabled = false;
dp[j].BlackoutDates.Add(new CalendarDateRange(new DateTime(0001, 1, 1), DateTime.Now.Subtract(TimeSpan.FromDays(1))));
Grid.SetColumn(dp[j], 2);
Grid.SetRow(dp[j], i);
g.Children.Add(dp[j]);
dp[j + 1] = new DatePicker();
dp[j + 1].Height = 25;
dp[j + 1].Width = 115;
dp[j + 1].VerticalAlignment = System.Windows.VerticalAlignment.Center;
dp[j + 1].HorizontalAlignment = System.Windows.HorizontalAlignment.Center;
dp[j + 1].IsEnabled = false;
dp[j + 1].BlackoutDates.Add(new CalendarDateRange(new DateTime(0001, 1, 1), DateTime.Now));
Grid.SetColumn(dp[j + 1], 3);
Grid.SetRow(dp[j + 1], i);
g.Children.Add(dp[j + 1]);
cks[i].Click += new RoutedEventHandler(delegate(object s, RoutedEventArgs re)
{
CheckBox cb = (CheckBox)re.Source;
for (int r = 0; r < cks.Length; r++)
{
if (cks[r].Equals(cb))
{
dp[r * 2].IsEnabled = true;
dp[r * 2 + 1].IsEnabled = true;
}
}
});
}
The checkboxs have an anonymous event handler, however this does not work for the DatePicker.SelectedDateChanged event.
Do you mean an event handler using an anonymous method like this?
var dp = new DatePicker();
dp.SelectedDateChanged +=
(sender, args) =>
{
var picker = (DatePicker) sender;
/* do stuff here */
};
Related
I have the following problem. I create a form with two NumericUpDown and I want to increment/decrement the value from them by 0.01. I tried to use NumericUpDownObject.Increment=0.01M, but there is no change after that, the value don't change. This is the code:
namespace Proiect1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
int i = 1;
int o = 1;
private void button1_Click(object sender, EventArgs e)
{
Label l = new Label();
Label l2 = new Label();
NumericUpDown t = new NumericUpDown();
NumericUpDown t2 = new NumericUpDown();
l.Top = i * 25;
l.Left = 3;
l2.Top = i * 25;
l2.Left = 63;
t.Value = 0;
t.Increment = 0.01M;
t.Top = i * 25;
t.Left = 30;
t2.Value = 0;
t2.Top = i * 25;
t2.Left = 90;
i++;
t.Size =new System.Drawing.Size(30, 30);
t2.Size = new System.Drawing.Size(30, 30);
l.Size = new System.Drawing.Size(25, 20);
l2.Size = new System.Drawing.Size(29, 20);
l.Text = "n" + o;
l2.Text = "w" + o;
o++;
panel1.Controls.Add(t);
panel1.Controls.Add(t2);
panel1.Controls.Add(l);
panel1.Controls.Add(l2);
panel1.AutoScroll = true;
}
Try this
This will setup the whole form when it's created, but only increment when clicked.
It looks like your solution is re-creating everything each time it's clicked.
P.s apols - been a while since I did Winforms/WPF
namespace Proiect1
{
public partial class Form1 : Form
{
NumericUpDown _t = new NumericUpDown();
NumericUpDown _t2 = new NumericUpDown();
Label _l = new Label();
Label _l2 = new Label();
public Form1()
{
InitializeComponent();
int i = 1;
int o = 1;
_l.Top = i * 25;
_l.Left = 3;
_l2.Top = i * 25;
_l2.Left = 63;
_t.Value = 0;
_t.Increment = 0.01;
_t.Top = i * 25;
_t.Left = 30;
_t2.Value = 0;
_t2.Top = i * 25;
_t2.Left = 90;
i++;
_t.Size =new System.Drawing.Size(30, 30);
_t2.Size = new System.Drawing.Size(30, 30);
_l.Size = new System.Drawing.Size(25, 20);
_l2.Size = new System.Drawing.Size(29, 20);
_l.Text = "n" + o;
_l2.Text = "w" + o;
o++;
panel1.Controls.Add(_t);
panel1.Controls.Add(_t2);
panel1.Controls.Add(l_);
panel1.Controls.Add(l_2);
panel1.AutoScroll = true;
}
private void button1_Click(object sender, EventArgs e)
{
_t.Increment = 0.01;
}
on startup I'm generating a lot of controls 90 to be exact and everything is working ok EXCEPT for the labels they are not being drawn or something? they are there because I can click them and they show proper ID (click event) here's the genereation code
private static bool ClientsLoaded = false;
private static WebBrowser[] Clients = new WebBrowser[45];
private static Label[] ClientLabel = new Label[45];
private static int MaximizedClient = -1;
public Form1()
{
InitializeComponent();
int WBoffsetX = 0;
int WBoffsetY = 0;
int lbloffsetX = 0;
int lbloffsetY = 0;
for (int i = 0; i < 45; i++)
{
var wb = new WebBrowser();
Clients[i] = wb;
wb.ScrollBarsEnabled = false;
wb.Height = 12;
wb.Width = 12;
wb.Location = new Point(2 + WBoffsetX, 2 + WBoffsetY);
WBoffsetX += 13;
wb.ScriptErrorsSuppressed = true;
this.Controls.Add(wb);
ClientLabel[i] = new Label();
ClientLabel[i].Name = "lbl_" + i;
ClientLabel[i].Font = new Font("Arial", 12);
ClientLabel[i].ForeColor = System.Drawing.Color.White;
ClientLabel[i].Location = new Point(12 + lbloffsetX, 450 + lbloffsetY);
lbloffsetX += 22;
ClientLabel[i].Click += new EventHandler(lbl_click);
ClientLabel[i].Text = "C" + i + ": o";
this.Controls.Add(ClientLabel[i]);
}
}
I've tried adding a button with for(45) clientlabel[i].Refresh() and it did nothing I tried changing the visibilty of them all to false and then back to true and nothing however I did find 1 thing interesting if I hide lbl_1 label 2 text will appear if I had label 2 label 3 text will appear but if I change the previous label back to visible they stay invisible textwise
I can click in a line on the form and
private void lbl_click(object sender, EventArgs e)
{
int id = -1;
var s = sender.ToString();
for(int i = 0; i<=45; i++)
{
if (s.Contains("C" + i + ":"))
{
id = i;
}
}
MessageBox.Show("Hello label, " + id);
}
will pop up the proper ids etc
does anyone know what's causing this maybe? or how to fix it
Well, I don't know what is the problem. This code works well enough and it has only marginal differences with the original(AutoSize property, explicit statement of Height and Width, and minor Location adjustment):
for (int i = 0; i < ClientLabel.Length; i++)
{
// Web browsers
WebBrowser wb = new WebBrowser()
{
ScrollBarsEnabled = false,
Height = 12,
Width = 12,
Location = new Point(2 + WBoffsetX, 2 + WBoffsetY),
ScriptErrorsSuppressed = true
};
WBoffsetX += 13;
Clients[i] = wb;
// Labels
Label label = new Label()
{
Name = "label_" + i,
Text = "Data",
AutoSize = true,
Location = new Point(50 + lbloffsetX, 50 + lbloffsetY),
Width = 100,
Height = 20,
Font = new Font("Arial", 12),
ForeColor = System.Drawing.Color.White,
};
label.Click += new EventHandler(lbl_click);
ClientLabel[i] = label;
lbloffsetX += 30;
}
this.Controls.AddRange(Clients);
this.Controls.AddRange(ClientLabel);
I have a test, and in Form1_Load I fill up this test with questions and answers. But it shows only first question. What's the matter?
int loc = 20;
for (int i = 0; i < 5; i++)
{
GroupBox gb = new GroupBox();
gb.Size = new Size(500, 200);
gb.Location = new Point(40, loc);
gb.BackColor = System.Drawing.Color.Aquamarine;
Label q_text = new Label(); // текст питання
q_text.Text = "Питання" + (i + 1);
q_text.Font = new Font("Aria", 10, FontStyle.Bold);
q_text.Location = new Point(gb.Location.X, gb.Location.Y);
gb.Controls.Add(q_text);
int iter = q_text.Location.Y + 30;
foreach (string key in questions[i].answers.Keys)
{
RadioButton rb = new RadioButton();
rb.Text = key;
rb.Size = new Size(120, 25);
rb.Location = new Point(q_text.Location.X + 10, iter);
iter += 30;
gb.Controls.Add(rb);
}
this.Controls.Add(gb);
loc += 300;
}
After examining your code, there are a few possible issues stemming from q_text
int loc = 20;
for (int i = 0; i < 5; i++)
{
GroupBox gb = new GroupBox();
gb.Size = new Size(500, 200);
gb.Location = new Point(40, loc);
gb.BackColor = System.Drawing.Color.Aquamarine;
Label q_text = new Label(); // текст питання
q_text.Text = "Питання" + (i + 1);
q_text.Font = new Font("Aria", 10, FontStyle.Bold);
q_text.Location = new Point(0, 0);
gb.Controls.Add(q_text);
int iter = q_text.Location.Y + 30;
foreach (string key in questions[i].answers.Keys)
{
RadioButton rb = new RadioButton();
rb.Text = key;
rb.Size = new Size(120, 25);
rb.Location = new Point(q_text.Location.X + 10, iter);
iter += 30;
gb.Controls.Add(rb);
}
this.Controls.Add(gb);
loc += 300;
}
The only changes here are q_text getting set to 0,0.
An additional change I would make however is to adjust hight by q_text's height:
int iter = q_text.Location.Y + q_text_Size.Height + 5;
Just in case the label was long and wrapped text.
I am trying to add different objects to a GroupBox. When I click 'Add Title' button I can get the Combobox and Textbox to appear in the Groupbox.
What I want to now happen is when they click 'Add question' I want to be able to add the questions objects (Combobox, Textbox) to the same Groupbox as the last added title.
C# CODE:
private void btnAddTitle_Click(object sender, RoutedEventArgs e)
{
CurrentSortItem++;
SortItems.Add(CurrentSortItem);
StackPanel sp = new StackPanel() { Orientation = Orientation.Horizontal };
gp = new GroupBox();
ComboBox y = new ComboBox();
y.Name = "Combo" + CurrentSortItem;
y.SelectedItem = CurrentSortItem;
y.Height = 25;
y.Width = 45;
y.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
y.Margin = new Thickness(20, 15, 0, 0);
foreach (int item in SortItems)
{
y.Items.Add(item);
}
TextBox x = new TextBox();
x.Name = "Title" + CurrentSortItem;
x.Text = "Title...";
x.FontWeight = FontWeights.Bold;
x.FontStyle = FontStyles.Italic;
x.TextWrapping = TextWrapping.Wrap;
x.Height = 25;
x.Width = 200;
x.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
x.Margin = new Thickness(12, 15, 0, 0);
sp.Children.Add(y);
sp.Children.Add(x);
gp.Content = sp;
spStandard.Children.Add(gp);
}
private void ViewQuestions(StackPanel sp)
{
gp.Content = sp;
}
List<int> SortItems1 = new List<int>();
int CurrentSortItem1 = 0;
int Count = 0;
private void btnQuestion_Click(object sender, RoutedEventArgs e)
{
if (SortItems.Count == 0)
{
MessageBox.Show("You must add a title before adding a question", "ERROR", MessageBoxButton.OK, MessageBoxImage.Information);
}
else
{
Count++;
CurrentSortItem1++;
SortItems1.Add(CurrentSortItem1);
StackPanel sp = new StackPanel() { Orientation = Orientation.Horizontal };
ComboBox y = new ComboBox();
y.Name = "Combo" + CurrentSortItem1;
y.SelectedItem = CurrentSortItem1;
y.Height = 25;
y.Width = 45;
y.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
y.Margin = new Thickness(20, 15, 0, 0);
foreach (int item in SortItems1)
{
y.Items.Add(item);
}
TextBox x = new TextBox();
x.Name = "Question" + CurrentSortItem1;
x.Text = "Question...";
x.FontStyle = FontStyles.Italic;
x.TextWrapping = TextWrapping.Wrap;
x.Height = 25;
x.Width = 500;
x.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
x.AcceptsReturn = true;
x.Margin = new Thickness(100, 15, 0, 0);
TextBox z = new TextBox();
z.Name = "Points" + CurrentSortItem;
z.FontWeight = FontWeights.Bold;
z.Height = 25;
z.Width = 45;
z.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
z.Margin = new Thickness(250, 15, 0, 0);
sp.Children.Add(y);
sp.Children.Add(x);
sp.Children.Add(z);
ViewQuestions(sp);
}
I have tried to have an attempted but when I click 'Add Question' it just overwrites the Title's objects.
Any help would be amazing.
I am using WPF, and these are created at runtime.
Thanks.
EDIT4:
I have had to move
StackPanel outerSp = new StackPanel() { Orientation = Orientation.Vertical };
StackPanel sp = new StackPanel() { Orientation = Orientation.Horizontal };
GroupBox gp;
Just below the
public partial class CreateNewStandard : Page
{
So it is visible to all the methods. Then I get this error.
http://i.stack.imgur.com/f9uqF.png
Try this
private void btnAddTitle_Click(object sender, RoutedEventArgs e)
{
CurrentSortItem++;
SortItems.Add(CurrentSortItem);
StackPanel outerSp = new StackPanel() { Orientation = Orientation.Vertical };
StackPanel sp = new StackPanel() { Orientation = Orientation.Horizontal };
gp = new GroupBox();
ComboBox y = new ComboBox();
y.Name = "Combo" + CurrentSortItem;
y.SelectedItem = CurrentSortItem;
y.Height = 25;
y.Width = 45;
y.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
y.Margin = new Thickness(20, 15, 0, 0);
foreach (int item in SortItems)
{
y.Items.Add(item);
}
TextBox x = new TextBox();
x.Name = "Title" + CurrentSortItem;
x.Text = "Title...";
x.FontWeight = FontWeights.Bold;
x.FontStyle = FontStyles.Italic;
x.TextWrapping = TextWrapping.Wrap;
x.Height = 25;
x.Width = 200;
x.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
x.Margin = new Thickness(12, 15, 0, 0);
sp.Children.Add(y);
sp.Children.Add(x);
outerSp.Children.Add(sp);
gp.Content = outerSp;
spStandard.Children.Add(gp);
}
private void ViewQuestions(StackPanel sp)
{
var stackPanel=gp.Content as StackPanel;
if(stackPanel!=null)
{
stackPanel.Children.Add(sp);
}
else
gp.Content=sp;
}
List<int> SortItems1 = new List<int>();
int CurrentSortItem1 = 0;
int Count = 0;
private void btnQuestion_Click(object sender, RoutedEventArgs e)
{
if (SortItems.Count == 0)
{
MessageBox.Show("You must add a title before adding a question", "ERROR", MessageBoxButton.OK, MessageBoxImage.Information);
}
else
{
Count++;
CurrentSortItem1++;
SortItems1.Add(CurrentSortItem1);
ComboBox y = new ComboBox();
y.Name = "Combo" + CurrentSortItem1;
y.SelectedItem = CurrentSortItem1;
y.Height = 25;
y.Width = 45;
y.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
y.Margin = new Thickness(20, 15, 0, 0);
foreach (int item in SortItems1)
{
y.Items.Add(item);
}
TextBox x = new TextBox();
x.Name = "Question" + CurrentSortItem1;
x.Text = "Question...";
x.FontStyle = FontStyles.Italic;
x.TextWrapping = TextWrapping.Wrap;
x.Height = 25;
x.Width = 500;
x.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
x.AcceptsReturn = true;
x.Margin = new Thickness(100, 15, 0, 0);
TextBox z = new TextBox();
z.Name = "Points" + CurrentSortItem;
z.FontWeight = FontWeights.Bold;
z.Height = 25;
z.Width = 45;
z.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
z.Margin = new Thickness(250, 15, 0, 0);
sp.Children.Add(y);
sp.Children.Add(x);
sp.Children.Add(z);
outerSp.Children.Add(sp);
ViewQuestions(sp);
}
You are overwriting it .Though you need to add them to the already existing stackPanel. The code is not tested I am trying to give you an idea .I hope this will help.
Here is my code to get values from XML file:
foreach (XmlNode node in DOC.SelectNodes("//CheckMarkObject"))
{
FbCheckMark checkmark = new FbCheckMark();
checkmark.Name = node.SelectSingleNode("Name").InnerText;
checkmark.Label = node.SelectSingleNode("Label").InnerText;
if (node.SelectSingleNode("IsChecked").InnerText == "0")
{
checkmark.IsChecked = false;
}
else
{
checkmark.IsChecked = true;
}
listCheckMarks.Add(checkmark);
}
Now the code to create control at runtime:
for (int i = 0; i < listCheckMarks.Count; i++)
{
if (listCheckMarks[i].checkMark.Equals(checkMark))
{
CheckBox cb = new CheckBox();
TextBlock cbtextblock = new TextBlock();
cbtextblock.Text = listCheckMarks[i].Label;
cbtextblock.Height = 27;
cbtextblock.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
cbtextblock.Margin = new Thickness(12, 20, 0, 0);
cbtextblock.VerticalAlignment = System.Windows.VerticalAlignment.Top;
cb.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
cb.VerticalAlignment = System.Windows.VerticalAlignment.Top;
cb.Margin = new Thickness(150, 21, 0, 0);
cb.Height = 50;
cb.Width = 100;
cb.Name = listCheckMarks[i].Name;
LayoutRoot.Children.Add(cbtextblock);
LayoutRoot.Children.Add(cb);
}
}
when i made change in my XML file i.e Create "CheckMark" tag two times. the result control overwrite on previous one. i want to arrange the new control under the previous one.
kindly suggest me what can i do ? use linear layout like in android?
thanks
Try to insert elements into StackPanel and set Orientation property for it.
Try that example:
StackPanel container = new StackPanel();
LayoutRoot.Children.Add(container);
for (int i = 0; i < listCheckMarks.Count; i++)
{
if (listCheckMarks[i].checkMark.Equals(checkMark))
{
StackPanel childContainer = new StackPanel();
childContainer.Orientation = Orientation.Horizontal;
CheckBox cb = new CheckBox();
TextBlock cbtextblock = new TextBlock();
cbtextblock.Text = listCheckMarks[i].Label;
cbtextblock.Height = 27;
cbtextblock.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
cbtextblock.Margin = new Thickness(12, 20, 0, 0);
cbtextblock.VerticalAlignment = System.Windows.VerticalAlignment.Top;
cb.HorizontalAlignment = System.Windows.HorizontalAlignment.Left;
cb.VerticalAlignment = System.Windows.VerticalAlignment.Top;
cb.Margin = new Thickness(150, 21, 0, 0);
cb.Height = 50;
cb.Width = 100;
cb.Name = listCheckMarks[i].Name;
childContainer.Children.Add(cbtextblock);
childContainer.Children.Add(cb);
container.Children.Add(childContainer);
}
}