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  • DataGridViewColumn.DataPropertyName Property

    - by Captain Comic
    Hi I have a DataGridView control and I want to populate it with data. I use DataSource property // dgvDealAsset is DataGridView private void DealAssetListControl_Load(object sender, EventArgs e) { dgvDealAssets.AutoGenerateColumns = false; dgvDealAssets.DataSource = DealAssetList.Instance.Values.ToList(); } Now problem number one. The class of my collection does not contain only simple types that I can map to columns using DataPropertyName. This is the class that is contained in collection. class MyClass { public String Name; MyOtherClass otherclass; } class MyOtherClass { public String Name; } Now I am binding properties of MyClass to columns col1.DataPropertyName = "Name" // Ok col2.DataPropertyName = "otherclass" // Not OK - I will have empty cell The problem is that I want to display otherclass.Name field. But if I try to write col2.DataPropertyName = "otherclass.Name" I get empty cell. I tried to manually set the column private void DealAssetListControl_Load(object sender, EventArgs e) { dgvDealAssets.AutoGenerateColumns = false; dgvDealAssets.DataSource = DealAssetList.Instance.Values.ToList(); // iterate through rows and set the column manually foreach (DataGridViewRow row in dgvDealAssets.Rows) { row.Cells["Column2"].Value = ((DealAsset)row.DataBoundItem).otherclass.Name; } But this foreach cycle takes about minute to complete (2k elements). How to solve this problem?

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  • WebBrowser.InnerHtml strange behavior

    - by Poma
    I'm trying to load page and then remove some elements in it. While doing that I encountered strange behavior. When I do webBrowser1.Document.Body.InnerHtml = webBrowser1.Document.Body.InnerHtml; It turns off some JavaScript code, for example for Google.com it turns off auto completion. Why is that? I suppose it has something to do with JavaScript initialization, if so how can I reinitialize the page?

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  • How to use opencv header in visual studio windows app

    - by yooo
    I did my work in visual studio 2010 c++ console , but now i am trying to convert my work into windows app (making interface of it) in visual studio c++ . For that i have to add some header files which i have to add manually in windows form application, like and it show me some error's in it like DetectRegions.h(10): error C2146: syntax error : missing ';' before identifier 'filename' DetectRegions.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(10): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(11): error C2061: syntax error : identifier 'string' DetectRegions.h(14): error C2143: syntax error : missing ';' before '<' DetectRegions.h(14): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(14): error C2238: unexpected token(s) preceding ';' DetectRegions.h(16): error C2143: syntax error : missing ';' before '<' DetectRegions.h(16): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(16): error C2238: unexpected token(s) preceding ';' DetectRegions.h(17): error C2061: syntax error : identifier 'RotatedRect' DetectRegions.h(18): error C2653: 'cv' : is not a class or namespace name DetectRegions.h(18): error C2146: syntax error : missing ';' before identifier 'histeq' DetectRegions.h(18): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(18): error C2061: syntax error : identifier 'Mat' DetectRegions.h(18): error C4430: missing type specifier - int assumed. Note: C++ does not support default-int DetectRegions.h(18): warning C4183: 'histeq': missing return type; assumed to be a member function returning 'int' Plate.h is same like DetectRegions.h I add the other headers of opencv in Form1.h like #include "opencv2/features2d/features2d.hpp" #include <opencv/highgui.h> #include "opencv2/opencv.hpp" .......

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  • How does ListView.ItemCollection.Contains() work?

    - by Inno
    Hi everyone, I'm copying ListViewItems from one ListView to another, sth. like: foreach (ListViewItem item in usersListView.SelectedItems) { selectedUsersListView.Items.Add((ListViewItem)item.Clone()); } If I want to use ListView.ItemCollection.Contains() to determine if an item was already copied I always get false: foreach (ListViewItem item in usersListView.SelectedItems) { if (!selectedUsersListView.Items.Contains(item) { // always !false selectedUsersListView.Items.Add((ListViewItem)item.Clone()); } } I did the following to solve my problem: foreach (ListViewItem item in usersListView.SelectedItems) { ListViewItem newItem = (ListViewItem)item.Clone(); newItem.Name = newItem.Text; if (!selectedUsersListView.Items.ContainsKey(newItem.Name) { // this works selectedUsersListView.Items.Add(newItem); } } So, it's ok that this solves my problem but I still have no idea why ListView.ItemCollection.Contains() doesn't work... How does ListView.ItemCollection.Contains() identify if an item already exists? How do ListViewItems have to be initialised that ListView.ItemCollection.Contains() (not ListView.ItemCollection.ContainsKey()) is able to identify them?

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  • Dynamically set method for tabPage

    - by phenevo
    Hi, I dynamically add TabPage to my TabControl How to set method Select() for this tabpage TabPage tpTags = new TabPage(); tabControl1.TabPages.Add(tpTags); ...setting properties... tpTags.Select() =tpTags.BindData(); <= how do it ?

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  • Retrieving "invalid" value from a NumericUpDown Validating event

    - by alhazen
    When the user enters a value above numericUpDown.Maximum, the control's value is automatically set to the maximum. I'd like to display a MessageBox when this occurs, but I'm not able to do that because control.Value and control.Text already contain the automatically set value, maximum, when Validating event is raised. private void numericUpDown_Validating(object sender, System.ComponentModel.CancelEventArgs e) { NumericUpDown control = sender as NumericUpDown; decimal newValue = control.Value; // decimal newValue; // decimal.TryParse(control.Text, out newValue) if (newValue > control.Maximum || newValue < control.Minimum) { // MessageBox } } Thanks

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  • Custom Shortcut in Windows.Forms.Shortcut?

    - by Chris
    How would you go about assigning a custom shortcut in C# to a Menu item? Right now, it looks like it only uses what is available in the Windows.Forms.Shortcut enum. The combination that I want, Ctrl + DownArrow, is not available. Thanks. Chris

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  • [C#]Problem with dynamic create tabPages in TabControl

    - by mirt
    Hello, I want to create dynamic tabPages in TabControl. In each tabPage I create dataGridView and i want to fill the entire space of each tabPage with this dataGrid. Here is code, where i do this: private void tabControlMutants_SelectedIndexChanged(object sender, EventArgs e) { DataGridView dgw = new DataGridView(); DataGridViewTextBoxColumn testCaseCol = new System.Windows.Forms.DataGridViewTextBoxColumn(); DataGridViewTextBoxColumn resultCol = new System.Windoows.Forms.DataGridViewTextBoxColumn(); // // dataGridView1 // dgw.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize; dgw.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] { testCaseCol, resultCol}); dgw.Location = new System.Drawing.Point(3, 3); dgw.Name = "dataGridView1"; dgw.AutoSize = true; dgw.Dock = System.Windows.Forms.DockStyle.Fill; dgw.TabIndex = 0; // // TestCaseColumn // testCaseCol.AutoSizeMode = System.Windows.Forms.DataGridViewAutoSizeColumnMode.Fill; testCaseCol.HeaderText = "Test Case"; testCaseCol.Name = "TestCaseColumn"; // // ResultColumn // resultCol.HeaderText = "Result"; resultCol.Name = "ResultColumn"; tabControlMutants.TabPages[(sender as TabControl).SelectedIndex].Controls.Add(dgw); ((System.ComponentModel.ISupportInitialize)(dgw)).EndInit(); //fill dataGridView } But it doesn't work, becouse when i resize the main window, data gridView doesn.t change its size (although the dock property is set to fill). Any ideas?

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  • Unresponsive form instance when instantiating form gets minimized

    - by sjlewis
    There's form A is the main form that gets hidden and is accessible via NotifyIcon's context menu. Form A instantiates form B via NotifyIcon's context menu also. Form B reacts to mouse events, etc. No problem there. Form B instantiates form C. Form C reacts to mouse events, etc. No problem here as well, but when form B gets minimized, form C no longer reacts to mouse events (eg. can no longer move, button clicks do not respond). Any idea why form C behaves like this in relation to form B getting minimized. I also tried to instantiate form C through form A (eg. form B calling a method in form A to instantiate form C) but the same thing happens. Is there any way to make form C respond even w/ form B (initiator) minimized?

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  • C# Question:Dynamically Disable ToolStripMenuItems/ToolStripButtons in an MDIParent Form: Which Even

    - by RedEye
    Any guidance on the following issue would be greatly appreciated. In which MDIParent event should I disable the items/buttons? Activated? On program Launch, I want the buttons disabled. If there are no active MDIChildren, I want the buttons disabled. When I launch a child form, I want to test that child form for data. If it is a blank form, I want the buttons to remain disabled. I currently have my code in the MdiChildActivated Event Handler. Thanks for your time.

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  • Is it possible to Embed Gecko or Webkit in a Windows Form just like a WebView?

    - by Martín Marconcini
    Hi, I'd love to know if there is such thing as a Gecko.NET ;) I mean, just like we can embed a WebView and that is an "instance" of IE7 inside any Windows Forms application (and tell it to "navigateto (fancy_url);", I'd love to use FireFox or WebKit. Anybody tried this? UPDATE: Please bear in mind that although it is possible to embed gecko using the mentioned controls, it is still impossible to print while using gecko. UPDATE March 2010: It’s still not possible to print natively using GeckoFX, however a couple of methods exist that may be enough, depending upon what you’re trying to do. See: http://geckofx.org/viewtopic.php?id=796 for more information.

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  • How to check absolute control visibility and how to be notified for changes of absolute visibility

    - by portakalla
    I have several controls inside my form and I perform several changes (Text, Font, BackColor etc.) on these controls. My changes are necessary only if the controls are visible. So, I want to stop performing my changes on controls that are not visible. I want to keep changing my controls when they become visible again. I can use Control.Visible and Control.VisibleChanged, however they are not satisfactory for my purpose. The problem is, VisibleChanged is not fired when control becomes invisible due to its parent (i.e. because its parent became invisible). Interestingly, it is fired when control becomes visible again. Is there a way to be notified for visibility changes without recursively listening parent visibility changes? I also want to be notified when another form is placed over my form and some of my controls become non-visible. I call this absolute visibility. (Is there another term for it?) Is there an event that I can use for this purpose? Thanks.

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  • Can not parse table information from html document.

    - by Harikrishna
    I am parsing many html documents.I am using html agility pack And I want to parse the tabular information from each document. And there may be any number of tables in each document.But I want to extract only one table from each document which has column header name NAME,PHONE NO,ADDRESS.And this table can be anywhere in the document,like in the document there is ten tables and from ten table there is one table which has many nested tables and from nested table there may be a table what I want to extract means table can be anywhere in the document and I want to find that table from the document by column header name.If I got that table then I want to then extract the information from that table. Now I can find the table which has column header NAME,PHONE NO,ADDRESS and also can extract the information from that.I am doing for that is, first I find the all tables in a document by foreach (var table in doc.DocumentNode.Descendants("table")) then for each table got I find the row for each table like, var rows = table.Descendants("tr"); and then for each row I am checking that row has that header name NAME,ADDRESS,PHONENO and if it is then I skip that row and extract all information after that row foreach (var row in rows.Skip(rowNo)) { var data = new List<string>(); foreach (var column in row.Descendants("td")) { data.Add(properText); } } Such that I am extracting all information from almost many document. But now problem is sometimes what happened that in some document I can not parse the information.Like a document in which there are like 10 tables and from these 10 tables 1 table is like there are many nested tables in that table. And from these nested tables I want to find the table which tabel has column header like NAME,ADDRESS,PHONE NO.So if table may be anywhere in the document even in the nested tables or anywhere it can be find through column header name.So I can parse the information from that table and skip the outer tabular information from that table.

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  • How do I get MessageBox button caption?

    - by rodrigoq
    Hello, I'm making a custom message box that lets you copy text, but I wanted it to look exactly like a standard message box, so I would like to set the buttons text to whatever the system language is, as the MessageBox class does. Does anyone knows how to get that text ("Yes", "No", "Cancel", etc)?.

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  • How to programmatically answer "Yes" to WebBrowser control security alert

    - by ih8ie8
    I am using WebBrowser control to programmatically access a single website, but whenever I login, I receive this certificate security alert: Since I trust that website and since I need to programmatically automate the login as well, this dialog box gets in the way. I searched SO for a solution and found a question similar to mine, but the accepted answer does not work! I defined a static member in the form that contains the WebControl: public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; } In my form's constructor I added: ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate); But that didn't get rid of the certificate security alert. Is there any way to get rid of this warning? Is there an IE equivalent to Firefox's Add Security Exception??? Note: The owner's certificate works perfectly fine (without exhibiting this security alert) with standalone browsers (IE, FF, Chrome, Safari). It only exhibits the problem with the WebBroswer control.

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  • Help with InvalidCastException

    - by Robert
    I have a gridview and, when a record is double-clicked, I want it to open up a new detail-view form for that particular record. As an example, I have created a Customer class: using System; using System.Data; using System.Configuration; using System.Collections.Generic; using System.ComponentModel; using System.Data.SqlClient; using System.Collections; namespace SyncTest { #region Customer Collection public class CustomerCollection : BindingListView<Customer> { public CustomerCollection() : base() { } public CustomerCollection(List<Customer> customers) : base(customers) { } public CustomerCollection(DataTable dt) { foreach (DataRow oRow in dt.Rows) { Customer c = new Customer(oRow); this.Add(c); } } } #endregion public class Customer : INotifyPropertyChanged, IEditableObject, IDataErrorInfo { private string _CustomerID; private string _CompanyName; private string _ContactName; private string _ContactTitle; private string _OldCustomerID; private string _OldCompanyName; private string _OldContactName; private string _OldContactTitle; private bool _Editing; private string _Error = string.Empty; private EntityStateEnum _EntityState; private Hashtable _PropErrors = new Hashtable(); public event PropertyChangedEventHandler PropertyChanged; private void FirePropertyChangeNotification(string propName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propName)); } } public Customer() { this.EntityState = EntityStateEnum.Unchanged; } public Customer(DataRow dr) { //Populates the business object item from a data row this.CustomerID = dr["CustomerID"].ToString(); this.CompanyName = dr["CompanyName"].ToString(); this.ContactName = dr["ContactName"].ToString(); this.ContactTitle = dr["ContactTitle"].ToString(); this.EntityState = EntityStateEnum.Unchanged; } public string CustomerID { get { return _CustomerID; } set { _CustomerID = value; FirePropertyChangeNotification("CustomerID"); } } public string CompanyName { get { return _CompanyName; } set { _CompanyName = value; FirePropertyChangeNotification("CompanyName"); } } public string ContactName { get { return _ContactName; } set { _ContactName = value; FirePropertyChangeNotification("ContactName"); } } public string ContactTitle { get { return _ContactTitle; } set { _ContactTitle = value; FirePropertyChangeNotification("ContactTitle"); } } public Boolean IsDirty { get { return ((this.EntityState != EntityStateEnum.Unchanged) || (this.EntityState != EntityStateEnum.Deleted)); } } public enum EntityStateEnum { Unchanged, Added, Deleted, Modified } void IEditableObject.BeginEdit() { if (!_Editing) { _OldCustomerID = _CustomerID; _OldCompanyName = _CompanyName; _OldContactName = _ContactName; _OldContactTitle = _ContactTitle; } this.EntityState = EntityStateEnum.Modified; _Editing = true; } void IEditableObject.CancelEdit() { if (_Editing) { _CustomerID = _OldCustomerID; _CompanyName = _OldCompanyName; _ContactName = _OldContactName; _ContactTitle = _OldContactTitle; } this.EntityState = EntityStateEnum.Unchanged; _Editing = false; } void IEditableObject.EndEdit() { _Editing = false; } public EntityStateEnum EntityState { get { return _EntityState; } set { _EntityState = value; } } string IDataErrorInfo.Error { get { return _Error; } } string IDataErrorInfo.this[string columnName] { get { return (string)_PropErrors[columnName]; } } private void DataStateChanged(EntityStateEnum dataState, string propertyName) { //Raise the event if (PropertyChanged != null && propertyName != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } //If the state is deleted, mark it as deleted if (dataState == EntityStateEnum.Deleted) { this.EntityState = dataState; } if (this.EntityState == EntityStateEnum.Unchanged) { this.EntityState = dataState; } } } } Here is my the code for the double-click event: private void customersDataGridView_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { Customer oCustomer = (Customer)customersBindingSource.CurrencyManager.List[customersBindingSource.CurrencyManager.Position]; CustomerForm oForm = new CustomerForm(); oForm.NewCustomer = oCustomer; oForm.ShowDialog(this); oForm.Dispose(); oForm = null; } Unfortunately, when this code runs, I receive an InvalidCastException error stating "Unable to cast object to type 'System.Data.DataRowView' to type 'SyncTest.Customer'". This error occurs on the very first line of that event: Customer oCustomer = (Customer)customersBindingSource.CurrencyManager.List[customersBindingSource.CurrencyManager.Position]; What am I doing wrong?... and what can I do to fix this? Any help is greatly appreciated. Thanks!

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  • AutoScroll issues with custom layout on Windows Forms application

    - by Lurker Indeed
    I've implemented a basic custom layout engine in Windows Forms that does control sizing and positioning. I was hoping to allow the AutoScroll features to work untouched, but any time I have enough controls on the screen to require a scroll bar, some of the layout events that get fired (i.e, a rich text box that expands the height as it types) not only fire the layout events, but they force the scroll bar back at (0,0). Do I have any options besides looking at the scroll position and positioning the controls manually based on that?

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  • String matching.

    - by Harikrishna
    How to match the string Net-----Amount (or here between Net and Amount there can be any number of space) with net amount ? Consider ----- as space because I could not keep the space between these two words in the editor.

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