Is there any possibility to get a value of doubleclicked row in ListView?
I registered an event:
private void lvLista_DoubleClick(object sender, EventArgs e)
{
MessageBox.Show(lvLista.SelectedItems.ToString());
}
But on message, when i doubleclick some row in listview i get:
System.Windows.Forms.ListView+SelectedListViewItemCollection
What is more, I have got 2 columns in listview:
lvLista.Columns.Add("ID");
lvLista.Columns.Add("Tilte");
And i want to show in messagebox the "ID" of doubleclicked row.
How to do it? How to get a values from this event?
If you handle the MouseDown and/or MouseDoubleClick events of the ListView control, and use the HitTest method to determine the target of the mouse action, you will know which item has been double clicked. This is also a good means to determine if NO item was clicked (for example, clicking on the empty area in a partially filled list.
The following code will display the clicked item in a textbox if a single click occurs, and will pop up a message box with the name of the double-clicked item if a double click occurs.
If the click or double click occur in an area of the list view not populated by an item, the text box or message box inform yopu of that fact.
This is a trivial example, and depending on your needs, you will have to mess with it a little.
UPDATE: I added some code which clears the SelectedItems property of the Listview control when an empty area of the list is clicked or double-clicked.
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
listView1.MouseDown += new MouseEventHandler(listView1_MouseDown);
listView1.MouseDoubleClick += new MouseEventHandler(listView1_MouseDoubleClick);
this.Load += new EventHandler(Form1_Load);
}
void Form1_Load(object sender, EventArgs e)
{
this.SetupListview();
}
private void SetupListview()
{
ListView lv = this.listView1;
lv.View = View.List;
lv.Items.Add("John Lennon");
lv.Items.Add("Paul McCartney");
lv.Items.Add("George Harrison");
lv.Items.Add("Richard Starkey");
}
void listView1_MouseDoubleClick(object sender, MouseEventArgs e)
{
ListViewHitTestInfo info = listView1.HitTest(e.X, e.Y);
ListViewItem item = info.Item;
if (item != null)
{
MessageBox.Show("The selected Item Name is: " + item.Text);
}
else
{
this.listView1.SelectedItems.Clear();
MessageBox.Show("No Item is selected");
}
}
void listView1_MouseDown(object sender, MouseEventArgs e)
{
ListViewHitTestInfo info = listView1.HitTest(e.X, e.Y);
ListViewItem item = info.Item;
if (item != null)
{
this.textBox1.Text = item.Text;
}
else
{
this.listView1.SelectedItems.Clear();
this.textBox1.Text = "No Item is Selected";
}
}
}
Try this:
private void lvLista_DoubleClick(object sender, EventArgs e)
{
MessageBox.Show(lvLista.SelectedItems[0].SubItems[0].Text);
}
I know this thread is old but nobody here answered the question properly in my opinion. For those in the future, try this, from MSDN:
// User must double-click to activate item
myListView.Activation = System.Windows.Forms.ItemActivation.Standard;
// Add event handler
myListView.ItemActivate += new
System.EventHandler(this.myListView_ItemClick);
Since the accepted answer didn't help me i thought that I would share my solution to the same problem: getting data from a specific column in a listview in the double click event.
The following line returns the data of the second column in the row that I've double clicked on as a string:
private void listViewOutput_DoubleClick(object sender, EventArgs e)
{
string content = listViewOutput.Items[listViewOutput.SelectedIndices[0]].SubItems[1].Text
}
Thanks; this is what I needed. I thought I'd also mention one could set up the local info variable more generally as:
ListViewHitTestInfo info = ((ListView)sender).HitTest(e.X, e.Y);
Try this
private void listView1_MouseClick(object sender, MouseEventArgs e)
{
ListViewHitTestInfo hit = listView1.HitTest(e.Location);
Rectangle rowBounds = hit.SubItem.Bounds;
Rectangle labelBounds = hit.Item.GetBounds(ItemBoundsPortion.Label);
int leftMargin = labelBounds.Left - 1;
string x = hit.Item.Text;
}
Related
I am creating a program using WinForms so users can input info into textboxes on one form which then are saved into a Listbox on another form. I would like to be able to edit the items saved in the listbox by opening the original form on a button click. Really struggling with it as I can't think of the code and I can't seem to find a solution.
My Code:
private void btnAdd_Click(object sender, EventArgs e)
{
RoomDisplayForm newRoomDisplayForm = new RoomDisplayForm();
newRoomDisplayForm.ShowDialog();
if(newRoomDisplayForm.DialogResult == DialogResult.OK)
{
listBoxRooms.Items.Add(newRoomDisplayForm.value);
}
newRoomDisplayForm.Close();
}
private void btnRemove_Click(object sender, EventArgs e)
{
this.listBoxRooms.Items.RemoveAt(this.listBoxRooms.SelectedIndex);
}
private void btnEdit_Click(object sender, EventArgs e)
{
}
So i've got a Add and Remove button which work perfectly just need a solution to the edit button.
Thanks in advance
I'm guessing newRoomDisplayForm.value is a property or a public member inside the form. You just need to do something like this:
private void btnEdit_Click(object sender, EventArgs e)
{
if(listBoxRooms.SelectedIndex < 0) return;
var tmpValue = listBoxRooms.Items[listBoxRooms.SelectedIndex].ToString();
RoomDisplayForm newRoomDisplayForm = new RoomDisplayForm();
newRoomDisplayForm.value = tmpValue;
newRoomDisplayForm.ShowDialog();
//TODO: inside "newRoomDisplayForm" set the value to the textbox
// ie.: myValueTextBox.Text = this.value;
if(newRoomDisplayForm.DialogResult == DialogResult.OK)
{
// replace the selected item with the new value
listBoxRooms.Items[listBoxRooms.SelectedIndex] = newRoomDisplayForm.value;
}
}
Hope it helps!
You can simply remove the listitem in that specific position, create a new item and add it again. it's kind of replacement.
I have two listboxes: listBox1, listBox2.
If i select the item in first listBox1, item of the same index must be automatically selected in listBox2.
So, If i select item 1 in listbox1 then, item 1 selected automatically in listbox2 and so on.
Not: I found some examples but not work.
private void listBoxControl2_SelectedIndexChanged(object sender, EventArgs e)
{ listBoxControl5.SelectedIndex = listBoxControl2.SelectedIndex; }
Edit:
I solved it using the selected index code in This answer in SelectedValueChanged Event.
private void listBoxControl2_SelectedValueChanged(object sender, EventArgs e)
{
listBoxControl5.SelectedIndex = listBoxControl2.SelectedIndex;
}
Here's a sample that you may want to explore more, try to add ListBoxto your form (in this sample 3 listboxes) it should look like the following:
And here's the source that would select the same index whenever you click on an item on it:
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
InitializeListBoxes();
}
private void InitializeListBoxes()
{
//Populate listboxes
listBox1.Items.Add("Apple");
listBox1.Items.Add("Orange");
listBox1.Items.Add("Mango");
listBox2.Items.Add("Milk");
listBox2.Items.Add("Cheese");
listBox2.Items.Add("Butter");
listBox3.Items.Add("Coffee");
listBox3.Items.Add("Cream");
listBox3.Items.Add("Sugar");
//Subscribe to same events
listBox1.SelectedIndexChanged += listBox_SelectedIndexChanged;
listBox2.SelectedIndexChanged += listBox_SelectedIndexChanged;
listBox3.SelectedIndexChanged += listBox_SelectedIndexChanged;
}
void listBox_SelectedIndexChanged(object sender, EventArgs e)
{
ListBox listBox = (ListBox)sender;
listBox1.SelectedIndex = listBox.SelectedIndex;
listBox2.SelectedIndex = listBox.SelectedIndex;
listBox3.SelectedIndex = listBox.SelectedIndex;
}
}
What happens is on the InitializeListBoxes you subscribe to the same event which would trigger the SelectedIndexChanged event, and select appropriate item from each of the ListBox.
to solve your problem, you can use a pattern called Observer: https://msdn.microsoft.com/en-us/library/ee850490(v=vs.110).aspx
Basically, you will have to create a notifier method in the listboxes that you want to notify. When you select an item in listBox1, you will call the notifier method of listBox2.
I solved it using the selected index code in This answer in SelectedValueChanged Event.
private void listBoxControl2_SelectedValueChanged(object sender, EventArgs e)
{
listBoxControl5.SelectedIndex = listBoxControl2.SelectedIndex;
}
Fastest and easiest way can be via MouseDown event:
private void lstBoxes_MouseDown(object sender, MouseEventArgs e)
{
ListBox lstBox = (ListBox)sender;
lstBx1.SelectedIndex = lstBox.SelectedIndex;
lstBx2.SelectedIndex = lstBox.SelectedIndex;
lstBx3.SelectedIndex = lstBox.SelectedIndex;
}
Im using windowsForms c# have a listbox which is bound with data items ...So depending on double click of the listbox item i want the corressponding form open...thnx in adv
ListBox has an DoubleClick event. You can access it if you select object, open Events tab in a Properties window.
Double click it and Visual Studio will create an event handler for you like this:
public void ListBox1_OnDoubleClick(object sender, EventArgs e)
{
// here is your code
}
Now, you just need to enter your code.
If you want to open a form with a corresponding item then it will be something like:
public void ListBox1_OnDoubleClick(object sender, EventArgs e)
{
string text = listBox1.Text; // Don't forget to manipulate with it
Form1 form = new Form1();
form.Show();
}
Subscribe to DoubleClick event on ListBox
listBox1.DoubleClick += new System.EventHandler(this.listBox1_DoubleClick);
private void listBox1_DoubleClick(object sender, EventArgs e)
{
// logic here
}
or
listBox1.DoubleClick += (s,e) => { /*logic here */};
I would use the MouseDoubleClick Event, it provides the cursor position in MouseEventArgs so you can easily detect which item got doubleclicked.
void Listbox1_MouseDoubleClick(object sender, MouseEventArgs e)
{
int index = Listbox1.IndexFromPoint(e.Location);
if (index != ListBox.NoMatches)
{
object clickedItem = Listbox1.Items[index];
// open your form here
}
}
I have some radionButtons in groupBox and I need to do action what I could call "one of radiobuttons.checked changed" or find out from radiobutton what index is changed.
I've tryed to find it in list of events but I couldn't find the right one.
Edit:
To make it more clear: I need to know if exist some handel for what I'll write handler method for the goupBox not for single radioButton. I know how to use radiButton.checkedChanged, but it's not what I'm finding ..
Or differently I need to know what options have the groupBox in monitoring what happens inside this groupBox - I mean only the handlers for the groupBox. I'm finding handler "in the group box is something happens" or simimilar if any exist.
It's in WFA (Windows Presentation Application) in Visual studio 2012.
I think what you want to do is wire up all of the RadioButtons' CheckedChanged event to the same handler.
public Form1()
{
radioButton1.CheckedChanged += new EventHandler(radioButtons_CheckedChanged);
radioButton2.CheckedChanged += new EventHandler(radioButtons_CheckedChanged);
// ...
}
private void radioButtons_CheckedChanged (object sender, EventArgs e)
{
RadioButton radioButton = sender as RadioButton;
if (radioButton1.Checked)
{
// Do stuff
}
else if (radioButton2.Checked)
{
// Do other stuff
}
}
Nothing built in for that as far as I'm aware.
Set the tag property to some sort of indicator (0 to n) will do.
Add a CheckChangedHandler
Point all the buttons CheckChanged events at it.
then something like.
private void radioButtons_CheckedChanged (object sender, EventArgs e)
{
RadioButton radioButton = sender as RadioButton;
int buttonid = (int)radioButton.Tag;
switch (buttonid)
{
case 0 : // do something; break
}
}
If you've got a few of these I'd look at a radiogroup component.
I had the same problem: a group box named Button Type (gbxButtonType) with 6 radio buttons and another group box named Icon Type (gbxIconType) with 8 radio button. When the user selected one radio button from each group box, a MessageBox will appear with the selection applied after clicking the DisplayButton. My problem was that the group boxes didn't have a CheckedChanged event. The solution of AKN worked perfectly:
public Form1()
{
InitializeComponent();
for (int i = 0; i < gbxButtonType.Controls.Count; i++)
{
RadioButton rdb = (RadioButton)gbxButtonType.Controls[i];
rdb.CheckedChanged += new System.EventHandler(gbxButtonType_CheckedChanged);
}
for (int i = 0; i < gbxIconType.Controls.Count; i++)
{
RadioButton rdb = (RadioButton)gbxIconType.Controls[i];
rdb.CheckedChanged += new System.EventHandler(gbxIconType_CheckedChanged);
}
}
private void gbxIconType_CheckedChanged(object sender, EventArgs e)
{
if (sender == rdbAsterisk)
{
iconType = MessageBoxIcon.Asterisk;
}
else if (sender == rdbError)
{
iconType = MessageBoxIcon.Error;
}
...
else
{
iconType = MessageBoxIcon.Warning;
}
}
Similar to davenewza's answer (and likely should have been a comment, but I have insufficient reputation), but with the event firing only once for the entire group of radio buttons.
public Form1()
{
// Add a "CheckedChanged" event handler for each radio button.
// Ensure that all radio buttons are in the same groupbox control.
radioButton1.CheckedChanged += new EventHandler(radioButtons_CheckedChanged);
radioButton2.CheckedChanged += new EventHandler(radioButtons_CheckedChanged);
}
private void radioButtons_CheckedChanged (object sender, EventArgs e)
{
// Do stuff only if the radio button is checked (or the action will run twice).
if (((RadioButton)sender).Checked)
{
if (((RadioButton)sender) == radioButton1)
{
// Do stuff
}
else if (((RadioButton)sender) == radioButton2)
{
// Do other stuff
}
}
}
Groupbox will limit only one radio button checked
So Setp1: you can assign one "CheckedChanged" event handler to all you radio button
private void initRadio()
{
radio_button1.CheckedChanged += Radio_show_CheckedChanged;
radio_button2.CheckedChanged +=Radio_show_CheckedChanged;
}
And Setp2: implement this event handler like this (Filter by Radio Button's Text)
private void Radio_show_CheckedChanged(object sender, EventArgs e)
{
RadioButton radioButton = sender as RadioButton;
if (radioButton.Checked == true) { //limited only checked button do function
switch (radioButton.Text)
{
case "name1":
// do your stuff ...
break;
case "name2":
// do your stuff ...
break;
}
}
}
System.Windows.Forms.RadioButton.CheckedChanged
is the event you need
So do something like:
public Form1()
{
InitializeComponent();
this.radioButton1.CheckedChanged += new EventHandler(radioButton1_CheckedChanged);
}
private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
// your action
}
I think your want to handle the selection of some radio buttons inside a groupbox using the groupbox control itself.
May be you wanted this basically to avoid code repetition.
(i.e) adding check change event for all the radio button in the designer which may be tedious when there are more control.
Since its already present under a group, why not use the group control object to manipulate controls with-in it and set the events.
This is how I understood your problem and hence the solution as indicated below.
Set a common handler for all radio button control in the group box
for (int i = 0; i < groupBox.Controls.Count; i++)
{
RadioButton rb = (RadioButton)groupBox.Controls[i];
rb.CheckedChanged += new System.EventHandler(evntHandler);
}
Inside the handler, you can determine which button was changed as indicated by others and do the necessary action.
//Here you go courtesy of Jock Frank Halliday
//^subscribe events to radio button check changed
private void seriesTxtBxEvent()
{
//Show txtBx
this.radBtn_RoomSeries.CheckedChanged += new EventHandler(showSeriesTxtBx_Event);
//Hide txtBx
this.radBtn_RoomNumber.CheckedChanged += new EventHandler(hideSeriesTxtBx_Event);
this.radBtn_RoomName.CheckedChanged += new EventHandler(hideSeriesTxtBx_Event);
this.radBtn_RoomLevel.CheckedChanged += new EventHandler(hideSeriesTxtBx_Event);
this.radBtn_RoomDep.CheckedChanged += new EventHandler(hideSeriesTxtBx_Event);
}
private void hideSeriesTxtBx_Event(object sender, EventArgs e)
{
tbx_SheetSeries.Visible = false;
}
private void showSeriesTxtBx_Event(object sender, EventArgs e)
{
tbx_SheetSeries.Visible = true;
}
//Form Start
void MainFormLoad(object sender, EventArgs e)
{
Control.ControlCollection locais = groupBoxLocalização.Controls;
foreach (CheckBox chkBox in locais)
{
chkBox.MouseUp += chkBoxLocais_MouseUp;
}
}
// Event
void chkBoxLocais_MouseUp(object sender, MouseEventArgs e)
{
//Tratar individualmente
CheckBox chk = (CheckBox)sender;
//ou para tratar todos objetos de uma vez
Control.ControlCollection locais = groupBoxLocalização.Controls;
foreach (CheckBox chkBox in locais) {
//chkBox....
}
}
You can maybe do it with Timer, but that's just bad for optimalization, the easy solution is that for every radiobutton you simply add only one function as ChekedChanged event.
Create a Checked event by double clicking on any of the radio buttons, copy the name of the method that Visual Studio creates for the event
Go to all radio buttons and change the event to the copied one from Properties Explorer > Events Section
In the generated method use the following code. This would fire event for all radio buttons but only "Do your thing" once
Code:
private void radioButtons_CheckedChanged (object sender, EventArgs e)
{
RadioButton rb = sender as RadioButton;
if (rb.Checked == false) return;
// Do your thing
}
Create Event Checked_Changed on one radio button from Designer Events list.
Add same event to each radio Button from dropdown in front of Checked_Changed
event of each radio
inside checked changed event use
private void CheckedChanged(object sender,EventArgs e)
{
var radio = groupBox.Controls.OfType<RadioButton>
().FirstOrDefault(r => r.Checked).Name;
}
you can get which radio is active now.
Is there any way to prevent changing the selected item in a ComboBox only if for certain conditions? I want to allow update the selected item's displayValue in the ComboBox. But I don't want user to change the selected item when it's being updated. This is a windows application.
Inside your class:
private int _selectedIndex = 0;
Inside your form load method:
comboBox1.Enter += new EventHandler(comboBox1_Enter);
comboBox1.SelectedIndexChanged += new EventHandler(comboBox1_SelectedIndexChanged);
Then the rest of the code:
protected void comboBox1_SelectedIndexChanged(object sender, EventArgs e) {
if (true) { // Add your validation or certain condition here.
(sender as ComboBox).SelectedIndex = _selectedIndex;
}
}
protected void comboBox1_Enter(object sender, EventArgs e) {
_selectedIndex = (sender as ComboBox).SelectedIndex;
}
Try setting set the Enabled property to false. (Or some third-party toolkits like Telerik have a ComboBox with a ReadOnly property.)