Develop Reference

MenuItem Click event handler not called

I´m building a ContextMenu on the fly, like this
readinstance = null;
ContextMenu cMenu = new ContextMenu();
for (int i = 0; i < instances.Length; i++) {
string text = String.Format("{0} - {1}", instances[i].Id, instances[i].FormName);
MenuItem item = new MenuItem(text, new EventHandler(cMenuitem_Click));
item.Tag = instances[i];
cMenu.MenuItems.Add(item);
}
cMenu.Show((Button)sender, new Point(0, 0));
cMenu.Dispose();
if (readinstance == null)
throw new Exception("Must select some instance");
and the handler is
void cMenuitem_Click(object sender, EventArgs e)
{
MenuItem item = (MenuItem)sender;
readinstance = (FormPrintingStorage)item.Tag;
}
The menu displays correctly, but when I click some of the options, the handler is not called, so readinstance remains null, and the exception throws. As a side note, when I click any of the options, the menu disappears.
I cannot see what is wrong with my code. Any help will be appreciated.

I´m answering my own question, because I tried more ways.
The first one was to replace the ContextMenu with a ListView and an "Ok" button, at no luck, because the wait loop needed a Thread.Sleep. No comments.
The solution was to implement a new dialog with an empty list view an the Ok button. Some of the relevant code follows. Note that only TreeViewItem/s are moved between the main form and the dialog.
ListViewItem _result = null;
public ListViewItem Result { get { return _result; } }
public List<ListViewItem> Source
{
set
{
listView1.Items.Clear();
foreach (ListViewItem item in value)
listView1.Items.Add(item);
listView1.View = View.List;
}
}
private void button1_Click(object sender, EventArgs e)
{
if (_result == null)
return;
DialogResult = DialogResult.OK;
Close();
}
private void listView1_SelectedIndexChanged(object sender, EventArgs e)
{
ListView list = (ListView)sender;
ListView.SelectedIndexCollection indices = list.SelectedIndices;
if (indices.Count == 0)
return;
_result = list.Items[indices[0]];
}
Getting the Result, the main form may do anything it wants with the Tag member. In fact, I´m using the same dialog for two different purposes in the same form.

How to implement new tab in CefSharp with correct address and title change?

I am using CefSharp to create a browser. It is working, I can navigate to various websites by using new tab. But when I click on previous tabs, all the tab shows same URL in the address bar and all of them has exactly same title. Here is my code:
private void FormBrowser_Load(object sender, EventArgs e)
{
CefSettings settings = new CefSettings();
Cef.Initialize(settings);
ChromiumWebBrowser browser = new ChromiumWebBrowser(toolStripTextBoxAddress.Text);
browser.Parent = tabControl.SelectedTab;
browser.Dock = DockStyle.Fill;
browser.AddressChanged += Browser_AddressChanged;
browser.TitleChanged += Browser_TitleChanged;
}
// new tab function
public void addNewTab()
{
TabPage tpage = new TabPage();
tpage.Text = "New Tab";
tabControl.Controls.Add(tpage);
tabControl.SelectTab(tabControl.TabCount - 1);
toolStripTextBoxAddress.Text = "";
ChromiumWebBrowser browser = new ChromiumWebBrowser(toolStripTextBoxAddress.Text);
browser.Parent = tpage;
browser.Dock = DockStyle.Fill;
browser.AddressChanged += Browser_AddressChanged;
browser.TitleChanged += Browser_TitleChanged;
}
private void Browser_TitleChanged(object sender, TitleChangedEventArgs e)
{
this.Invoke(new MethodInvoker(() =>
{
tabControl.SelectedTab.Text = e.Title;
}));
}
private void Browser_AddressChanged(object sender, AddressChangedEventArgs e)
{
this.Invoke(new MethodInvoker(() =>
{
toolStripTextBoxAddress.Text = e.Address;
}));
}
// navigate method
private void toolStripTextBoxAddress_KeyUp(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.Enter)
{
if (!string.IsNullOrEmpty(toolStripTextBoxAddress.Text))
{
if (!toolStripTextBoxAddress.Text.Contains("."))
{
getCurrentBrowser().Load("http://www.google.com/search?q=" + toolStripTextBoxAddress.Text);
}
else
{
getCurrentBrowser().Load(toolStripTextBoxAddress.Text);
}
}
}
}
// get current browser
private ChromiumWebBrowser getCurrentBrowser()
{
return (ChromiumWebBrowser)tabControl.SelectedTab.Controls[0];
}
// new tab button
private void toolStripButtonNewTab_Click(object sender, EventArgs e)
{
addNewTab();
}
Here is what I have tried:
private void tabControl_SelectedIndexChanged(object sender, EventArgs e)
{
ChromiumWebBrowser currentBrowser = getCurrentBrowser();
toolStripTextBoxAddress.Text = currentBrowser.Address;
}
When i try to open a new tab it is giving me an error in this line return (ChromiumWebBrowser)tabControl.SelectedTab.Controls[0];
How can I solve this problem? Thanks in advance.

I wrote my multi-tab cefsharp code in a very similar fashion to yours, and encountered the same error.
It was cause by the default number of tab pages. (When you drag tabcontrol to your form, it by default comes with 2 tabpages to start with). From the property panel, I removed those two tabpages, so that the browser starts wit zero tabpage. Any tabpage is only added when you start browsing, by inputting url or clicking favorites.
If you do not set the initial number of tabpages to zero, those two "empty" tabpages have no browser attached to them. Therefore the getcurrentbrowser() function fails to find any browser on those empty tabpages and errors occur.

VSTO Word Content Control - adding multiple RichTextContentControls at run time

I'm creating a Word add-in which allows the user to select various text in a Word document and click a button on the ribbon which will wrap that text with a Content Control (rich text). Eventually these content controls will then be mapped to XML.
The code so far is like this:
public partial class Ribbon1
{
private RichTextContentControl titleRichTextControl;
private void Ribbon1_Load(object sender, RibbonUIEventArgs e)
{
}
private void addTitle_Click(object sender, RibbonControlEventArgs e)
{
AddRichTextControlAtSelection();
}
private void AddRichTextControlAtSelection()
{
word.Document currentDocument = Globals.ThisAddIn.Application.ActiveDocument;
currentDocument.ActiveWindow.Selection.Range.Select();
Document extendedDocument = Globals.Factory.GetVstoObject(currentDocument);
titleRichTextControl = extendedDocument.Controls.AddRichTextContentControl("titleRichTextControl");
titleRichTextControl.PlaceholderText = "Enter the title";
titleRichTextControl.Title = "Title";
titleRichTextControl.Tag = "title";
}
}
All this is fine and it works for the first time the button is clicked. However, if there is more than one 'title' (in this case) that needs adding, and the user presses the button a second time, it throws the error:
The control cannot be added because a control with the name titleRichTextControl already exists in the Controls collection.
It's clear why it complains, but i can't think of the correct way to go to allow multiple clicks of the button to generate multiple content controls of the same type (rich text content control) and the same name ("title" for example).
Can anybody point me in the right direction please.

OK this was how i did it in the end:
private void addTitle_Click(object sender, RibbonControlEventArgs e)
{
AddRichTextControlAtSelection();
}
int count = 0;
private void AddRichTextControlAtSelection()
{
word.Document currentDocument = Globals.ThisAddIn.Application.ActiveDocument;
Document extendedDocument = Globals.Factory.GetVstoObject(currentDocument);
if (currentDocument.ContentControls.Count > 0)
{
currentDocument.ActiveWindow.Selection.Range.HighlightColorIndex = word.WdColorIndex.wdYellow;
currentDocument.ActiveWindow.Selection.Range.Select();
richTextControls = new List<RichTextContentControl>();
foreach (word.ContentControl nativeControl in currentDocument.ContentControls)
{
if (nativeControl.Type == Microsoft.Office.Interop.Word.WdContentControlType.wdContentControlRichText)
{
count++;
RichTextContentControl tempControl = extendedDocument.Controls.AddRichTextContentControl("VSTORichTextControl" + count.ToString());
richTextControls.Add(tempControl);
tempControl.Title = "Title";
tempControl.Tag = "title";
break;
}
}
}
else
{
RichTextContentControl VSTORichTextControl;
VSTORichTextControl = extendedDocument.Controls.AddRichTextContentControl("VSTORichTextControl");
VSTORichTextControl.PlaceholderText = "Enter the DM title";
VSTORichTextControl.Title = "Title";
VSTORichTextControl.Tag = "title";
}
}

context menu to delete selected button

I create a custom control inside a tab control which contains a flowLayoutPanel on every tab by dragging files on the selected tab. I have a context menu to rename and delete tab pages, but i want also to be able to delete a button created when I right click on it and select "remove"... I cannot find a way to delete only the selected button..
This is what I have to create the buttons:
public void Form1_DragDrop(object sender, DragEventArgs e)
{
string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
foreach (string s in fileList)
{
var button = new Button();
path_app = String.Format("{0}", s);
string filename = path_app;
file_name = Path.GetFileName(path_app);
Icon icon = System.Drawing.Icon.ExtractAssociatedIcon(filename);
Bitmap bmp = icon.ToBitmap();
CustomControl custom_btn = new CustomControl(button, new Label { Text = file_name });
button.Tag = path_app;
button.BackgroundImage = bmp;
button.BackgroundImageLayout = ImageLayout.Stretch;
FlowLayoutPanel selectedFLP = (FlowLayoutPanel)tabControl1.SelectedTab.Controls[0];
selectedFLP.Controls.Add(custom_btn);
button.Click += new EventHandler(button_Click);
ContextMenu cm2 = new ContextMenu();
cm2.MenuItems.Add("Remove", new EventHandler(rmv_btn_click));
custom_btn.ContextMenu = cm2;
}
}
private void rmv_btn_click(object sender, System.EventArgs e)
{
foreach (Control X in fl_panel.Controls)
{
fl_panel.Controls.Remove(X);
}
}
How do I get the button which I right click on it as sender in the rmv_btn_click event to know which one to delete?

If I understand what you mean, You need to use something like this.
private void rmv_btn_click(object sender, System.EventArgs e)
{
fl_panel.Controls.Remove(sender as Button);
}

private void rmv_btn_click(object sender, System.EventArgs e)
{
Button btn = new Button();
Label lbl = new Label();
CustomControl cst_btn = new CustomControl(btn, lbl);
cst_btn = sender as CustomControl;
DialogResult dialogResult = MessageBox.Show("Are you sure that you want to remove this object?", "Remove object", MessageBoxButtons.YesNo);
if (dialogResult == DialogResult.Yes)
{
cst_btn.Dispose();
}
else if (dialogResult == DialogResult.No)
{
//do nothing
}
}
public EventHandler handlerGetter(CustomControl button)
{
return (object sender, EventArgs e) =>
{
rmv_btn_click(button, e);
};
}

Identify a column on right clicking on the column's header

I have a Syncfusion's GridGroupingControl. I would like to do a custom action with the column, say a custom "hide column".
There is a way to identify the column name when right clicking (I display a context menu by the way) on the column's header or cell?
I have a *ContextMenuStrip_Opening*, but it does not bring any info about the column.
I have also *myGrid_TableControlCellClick* but this one action only on the cell and only on the left click...

Well, think it
int selected_colum; // "selected_colum " need be a global var
private void dtg_contatos_MouseDown(object sender, MouseEventArgs e)
{
try
{
if (e.Button == MouseButtons.Right)
{
dtg_contatos.ClearSelection();
var hti = dtg_contatos.HitTest(e.X, e.Y);
dtg_contatos.Columns[hti.ColumnIndex].Selected = true;
selected_colum = hti.ColumnIndex; // here you set to global var de colum to use at contextmenustrip click
dtg_contatos.Columns[selected_colum].Visible = false; // this you will place at contextmenustrip to hide the column
}
}
catch
{
}
}

You could handle the TableControlMouseDown event on the GridGroupingControl, check for the right mouse button, and then get the ColumnDescriptor from the mouse event location, and save the column name (and maybe HeaderText to show in the menu):
this.gridGroupingControl1.TableControlMouseDown += gridGroupingControl1_TableControlMouseDown;
private string rightClickCol;
void gridGroupingControl1_TableControlMouseDown(object sender, Syncfusion.Windows.Forms.Grid.Grouping.GridTableControlMouseEventArgs e)
{
if (e.Inner.Button == System.Windows.Forms.MouseButtons.Right)
{
rightClickCol = string.Empty;
Syncfusion.Windows.Forms.Grid.Grouping.GridColumnDescriptor columnDescriptor =
gridGroupingControl1.TableControl.GetHeaderColumnDescriptorAt(e.Inner.Location);
if (columnDescriptor != null)
rightClickCol = columnDescriptor.Name;
}
}
private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
{
if (!string.IsNullOrEmpty(rightClickCol))
{
hideColumnToolStripMenuItem.Text = "Hide " + rightClickCol;
hideColumnToolStripMenuItem.Enabled = true;
}
else
{
hideColumnToolStripMenuItem.Text = "Hide Column";
hideColumnToolStripMenuItem.Enabled = false;
}
}
private void hideColumnToolStripMenuItem_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(rightClickCol))
gridGroupingControl1.TableDescriptor.VisibleColumns.Remove(rightClickCol);
}